Posts Tagged ‘weather’
12 Oct – The IMD has issued its evening alert on cyclone Hudhud. The 1700 IST (5:00pm IST) alert contains a heavy rainfall warning and a wind warning.
Heavy rainfall warning: Rainfall at most places with heavy (6.5-12.4 cm) to very heavy falls (12.5-24.4 cm) at a few places and isolated extremely heavy falls (>24.5 cm) would occur over West and East Godavari, Visakhapatnam, Vijayanagaram and Srikakulam districts of north Andhra Pradesh and Ganjam, Gajapati, Koraput, Rayagada, Nabarangpur, Malkangiri, Kalahandi, Phulbani districts of south Odisha during next 24 hrs. Rainfall would occur at most places with heavy to very heavy rainfall at isolated places over Krishna, Guntur and Prakasham districts of Andhra Pradesh and north Odisha during the same period. Rainfall at most places with heavy falls at a few places would occur over south Chattisgarh, adjoining Telangana and isolated heavy to very heavy falls over north Chattisgarh, east Madhya Pradesh, Jharkhand and Bihar.
Wind warning: Current gale wind speed reaching 130-140 kmph gusting to 150 kmph would decrease gradually to 100-110 kmph gusting to 120 kmph during next 3 hours and to 80-90 kmph during subsequent 6 hours over East Godavari, Visakhapatnam, Vizianagaram and Srikakulam districts of North Andhra Pradesh. Wind speed of 80-90 kmph gusting to 100 kmph would prevail over Koraput, Malkangiri, Nabarangpur and Rayagada districts during next 6 hrs and 50 to 60 kmph during subsequent 12 hrs. Squally wind speed reaching upto 55-65 kmph gusting to 75 kmph would also prevail along and off West Godavari and Krishna districts of Andhra Pradesh, Ganjam and Gajapati districts of Odisha, south Chattisgarh and adjoining districts of north Telangana during next 12 hours.
Odisha district control room phone numbers have been distributed thanks to eodisha.org.
They are: Mayurbhanj 06792 252759, Jajpur 06728 222648, Gajapati 06815 222943, Dhenkanal 06762 221376, Khurda 06755 220002, Keonjhar 06766 255437, Cuttack 0671 2507842, Ganjam 06811 263978, Puri 06752 223237, Kendrapara 06727 232803, Jagatsinghpur 06724 220368, Balasore 06782 26267, Bhadrak 06784 251881.
There are reports on twitter that the leading edge of cyclone Hudhud crossed the coast at around 1030 IST (0500 UTC). The reported maximum wind speed is just above 200 kmph which means the destructive force threatens structures too.
I appeal to people in coastal districts to stay indoors even 6 hours after the cyclone’s effect. Your safety is my concern.
— N Chandrababu Naidu (@ncbn) October 12, 2014
— Deepa Ghosh (@deepaghosh2007) October 12, 2014
This tweet means that western ‘wall’ of the cyclone has crossed. It took just under two hours. The eastern ‘wall’ crossing of the coast, accompanied by severely high winds and very heavy rain, is under way now.
— Sudhan Rajagopal BJP (@BJPsudhanRSS) October 12, 2014
— Saswat K Swain (@saswat28) October 12, 2014
Roofs of houses fly away like leaves, huge trees falling everywhere #Hudhud creating maximum destruction.
— Imran Baig (@imranbaig) October 12, 2014
Navy officials warn that there will be a lull in the storm at around 11.30 am, but the storm will again intensify after that for a few hours.
Zee News has a list of cancelled and curtailed trains.
At least 400,000 people have been evacuated from the coastal areas of Andhra Pradesh and Odisha states as authorities aimed for zero casualties.
11 Oct – Where is Cyclone Hudhud and how fast is it moving towards land? The India Meteorological Department has said in its most recent alert – 1430/2:30pm on 11 October – that “the Very Severe Cyclonic Storm” is now about 260 kilometres south-east of Visakhapatnam and 350 km south-south-east of Gopalpur. IMD expects the cyclone to travel north-west and cross the coast of north Andhra Pradesh, near Visakhapatnam, by mid-morning on 12 October 2014.
Around 100,000 people have been evacuated in Andhra Pradesh to high-rise buildings, shelters and relief centres, with plans to move a total of 300,000 to safety. Authorities in Odisha said they were monitoring the situation and would, if necessary, move 300,000 people most at risk.
The evacuation effort was comparable in scale to the one that preceded Cyclone Phailin exactly a year ago, and which was credited with minimising the fatalities to 53. When a huge storm hit the same area 15 years ago, 10,000 people died.
Authorities have been stocking cyclone shelters with dry rations, water purification tablets and generators. They have opened up 24-hour emergency control rooms and dispatched satellite phones to officials in charge of vulnerable districts.
The AP government has cancelled leaves of employees and has asked everyone to remain on duty on the weekend. In Vizag, where the cyclone is expected to make landfall, the administration has opened 175 shelters and moved close to 40,000 people from the coastal villages. In Srikakulam, people of 250 villages in 11 mandals which may be affected have been evacuated.
While human casualties are not expected due to the massive evacuation, power and telecommunication lines will be uprooted leading to widespread disruption. A warning has been issued that flooding and uprooted trees will cut off escape routes, national and state highways and traffic is being regulated to ensure that no one is caught in the flash floods caused by heavy rains.
Officials said that National Disaster Response Force teams have been strategically placed along the coast to be deployed wherever they are required. Railways has cancelled all trains passing through the three districts which are likely to be affected.
The IMD has issued a “Heavy Rainfall Warning” which has said that driven by the cyclonic winds, rainfall at most places along the AP and Odisha coast will be heavy (6.5–12.4cm) to very heavy (12.5–24.4 cm). These places include West and East Godavari, Visakhapatnam, Vijayanagaram and Srikakulam districts of north Andhra Pradesh and Ganjam, Gajapati, Koraput, Rayagada, Nabarangpur, Malkangiri, Kalahandi, Phulbani districts of south Odisha.
10 Oct – The India Meteorological Department said on the evening of 10 October that the “Very Severe Cyclonic Storm” is centered near latitude 15.0ºN and longitude 86.8ºE about 470 km east-southeast of Visakhapatnam and 520 km south-southeast of Gopalpur. This was the fix IMD had on the centre of the cyclone at 1430 IST on 10 October 2014.
Here are the salient points from news reports released during the afternoon of 10 October:
Cyclone Hudhud will cross the north Andhra Pradesh coast on October 12 and is expected to make landfall close to Visakhapatnam, according to the Cyclone Warning Centre (CWC) at Visakhapatnam. “It is forecast that Hudhud, which is already a severe cyclonic storm, will intensify into a very severe cyclonic storm in next 12 hours. Hudhud is likely to make landfall on October 12 close to Visakhapatnam,” said IMD’s Hyderabad centre.
Cyclone Hudhud has moved closer to the coast of Odisha and eight districts of the state are likely to be affected by it. The districts likely to be affected by the cyclone are Ganjam, Gajapati, Rayagada, Koraput, Malkangiri, Nabarangpur, Kalahandi and Kandhamal. All these districts have been provided with satellite phones for emergency and constant vigil was being maintained on the rivers like Bansadhara, Rusikulya and Nagabali as heavy rain is expected in southern districts.
With cyclone Hudhud fast approaching the states of Odisha, Andhra Pradesh and Telangana, Union Home Minister Rajnath Singh today spoke to the chief ministers of the three states on the steps being taken to deal with the situation. Odisha Chief Minister Naveen Patnaik sought satellite phones which could be used in case high-speed winds disturbed the telecommunication system.
According to the India Meteorological Department, the wind speeds of cyclone Hudhud will be less than what the east coast experienced during Phailin in October 2013. The wind speed during cyclone Phailin was nearly 210 kmph, which made the cyclone the second-strongest ever to hit India’s coastal region. The country had witnessed its severest cyclone in Odisha in 1999.
Frequent updates and advisories can also be found at GDACS – the Global Disaster Alert and Coordination System (a cooperation framework under the UN umbrella). GDACS provides real-time access to web-based disaster information systems and related coordination tools.
Cities that will directly be affected by cyclone Hudhud are Vishakhapatnam in Andhra Pradesh, Jagdalpur in Chhattisgarh, Vizianagaram in AP, Bhogapuram in AP, and Anakapalle in AP.
From the first week of June 2014 until the middle of September 2014, there have been floods and conditions near drought in many districts, but for India the tale of monsoon 2014 comes from individual districts and not from a national ‘average’ or a ‘cumulative’.
This revealing chart tells some of that tale. It shows that for the first six weeks of monsoon 2014, most districts recorded rain below their normals for those weeks.
The lines are percentile lines; they tell us what percent of districts recorded how much rainfall in a monsoon week relative to their normals for that week. This chart does not show how much rain – it shows distance away from a weekly normal for districts.
The left scale is a percentage – higher percentages indicate how much above normal districts recorded their rainfall, negative numbers show us how much below normal their rainfall was.
The dates (the bottom scale) are for weeks ending on that date for which ‘normals’ and departures from normal were recorded. The P_01 to P_09 lines are the percentiles (10th to 90th) of districts in every week.
The district weekly normal is an important measure for matters like sowing of crop and issuing water rationing instructions in talukas and blocks. In the week ending 23 July for example, we see that the 60th percentile line spiked above normal, and this means that in that week only four out of ten districts all over India received the amount of rain it should have based on the average of the last 50 years.
The districts overview chart is distilled from the detailed weekly tables I have assembled (see the image of the Maharashtra table). For the whole country, what the districts tell us about the monsoon so far is a very much more detailed and insightful tale than the typical offering by the Meteorological Department (see India sub-divisional map). These weekly district tables are coded using my modified monsoon methodology, geared towards aiding decisions for local administrations especially for prolonged arid conditions leading to drought.
Who can you turn to? It’s easier to list those whom you shouldn’t turn to, the top rankers being the country’s press and television wallahs, followed at a not respectable distance by academic commentators, then come the government blokes and bureaucrats (some of whom do know the difference between isobars and salad bars, I’ll give them that). Lurking behind this cacophonous mob are the boffins of the IMD and its associated scientific chapters, a number of whom have got their sums right, but who aren’t given the space and encouragement to tell the great Bharatiya public what said public is yearning to hear simply because regulations forbid, just like it was in 1982, 1957, whenever.
As I may have mentioned before, this is Not A Good Thing. It has taken about a decade of mission mode tutoring (how the UPA bureaucrats loved that phrase, mission mode) to get the media wallahs to see the difference between weather and climate. A few may even have learned to read a wet bulb thermometer and puzzle their way through precipitation charts.
But overall, the profusion of android apps that profess to show cool graphics of clouds with lightning bolts erupting topside so that our humble ‘kisans’ know when it’s going to rain (i.e., by looking down at their screens instead of up at the sky) has not helped the Bharatiya public make more sense of less rain. We have squadrons of Insats and Kalpanas buzzing around the globe beaming pictures from the infra-red to the infra dig back home, every 60 or 90 minutes, busy enough to crash a flickr photo server, but the knowledge that said public can sift from it is sparse, rather like the rainfall over Barmer, Bikaner and Ajmer.
And so it goes, with the waiting for rain replacing with an equal banality waiting for Godot but with a far larger cast of characters, most of them insensible to the greater climatic drama being played out, 30,000 feet overhead, and at the poles, in the vast turquoise swells of the eastern Pacific where a malignant El Nino is brooding, in the Himalayan valleys where crystal zephyrs have been shoved aside by an airborne mat of PM2.5, or to the desiccation that creeps outwards from our towns and cities (7,935 of them, India’s triumphant ‘growth story’) that have enclosed sweeping hectares with cement, asphalt, and the hot foetid belches of factories and air-conditioners. GDP, they have been told, is the great liberator.
And that is why we have in place of the quiet concern of our forefathers in their dhotis, an electronic jumble of shrill alarm. “Weak monsoon intensifies drought like conditions in India” was one such headline, the text beneath finding the most ludicrous connections: “… threat of food inflation and weak rural demand in the first year of the Narendra Modi government”. Naturally, the cheerleaders of a demand-centric world cannot do otherwise.
And likewise with “Weak rains deliver India’s new Modi government its first economic challenge” that desultorily spies impending delays in the “sowing of main crops such as paddy, corn and sugarcane” and which notes mournfully that “about half of all farms lack irrigation systems” and, even worse, that “reservoir levels are only a fourth of last year’s levels”, this last despite the best efforts, ham-handed though they are, by the Central Water Commission to show India (for Bharat knows) that the reservoir levels in the 85 major reservoirs are low, but not much lower at this point in 2014 than they were in 2013. The GDP bullies dislike contrary numbers, and would go cross-eyed were someone to mischievously mention the existence of 4,845 large dams in India (the blue-ribboned 85 included) whose many water levels we don’t in fact know at all.
And similar vapidity from another quarter, which like its peers cloaks ineptitude with what it takes to be appropriate jargon, “The cumulative rainfall across the country has so far been 45 per cent below the Long Period Average (LPA) for 1951-2000″ and brandishes even more frightful credentials with “a further breakdown of rain data recorded in different meteorological subdivisions shows that normal rainfall has been recorded in only seven of the 36 regions”. But which sere farmer and her wise daughters consider in their universe such things as meteorological subdivisions, when their world is what Balraj Sahni and Nirupa Roy in 1953 showed us so lambently, is no more than ‘do bigha zamin’?
But still the misreading gathers pace, as vexed fixations upon an existence merely economic chase away plain common-sense. For rains may come or rains may go, but in tractors – for so we are instructed by the agents of hardened merchants – we trust. To wit: “… tractor sales have typically expanded at a double-digit pace in the years when rains have disappointed… In the 11 years between fiscal 2003 and fiscal 2013, rains fell short by 5% or more on six occasions… In four of those six years, tractor sales grew at a double-digit pace”. Let us then leave behind our cares and go rollicking over the dusty, still dustier now, plains of the Deccan in tractors tooting red.
But a shadow of monsoon yet for Bharat, and at June’s end. It is past time that the prattling ceased and the learning began.
The changes that we find in the patterns, trends, intensity and quantity of India’s monsoon now require an overhaul in the way we assess what is satisfactory or not for environmental and human needs. India’s summer monsoon is already late, and where it is late but active it is weak. The indications from the central earth science agencies (including the India Meteorological Department), from the Indian Institute of Tropical Meteorology, from the National Centre for Medium Range Weather Forecasting are that it will be the end of June before the summer monsoon system settles over central India and the western Gangetic plains. Even so, it will be a relief from the searing temperatures but will not assure sowing conditions for farmers and cultivators, nor will it add to the stores of water in major and minor reservoirs.
In this commentary written for India Climate Portal, I have explained why IMD’s hoary top level categorisation of rainfall weekly quantities in the subdivisions must be replaced, both for what they describe and for how frequently they are described. These currently are: ‘normal’ in a subdivision is rainfall that is up to +19% above a given period’s average and down to -19% from that same average; likewise excess is +20% and more, deficient is -20% to -59% and scanty is -60% to -99%. The ‘normals’ are calculated based on the mean weekly rainfall for the period 1951-2000 with monitoring done in 641 districts distributed amongst the 36 meteorological subdivisions.
By categorising rainfall ‘normals’ and departures from ‘normal’ to become more administratively impelling – these proposed corrections also simplify the interpretations possible for rainfall above and below ‘normals’ – greater awareness and preparedness of administrations, key agencies and citizens to the deficiencies of monsoon can be fostered. For the district tables below therefore, I have re-cast the categories as follows (all based on the long-term average provided by IMD): Normal in a district is +5% to -5%; Deficient 1 is -6% to -20%; Deficient 2 is -21% and more; Excess 1 is +6% to +20%; Excess 2 is +21% and more.
Whereas, for the same second rainfall week the IMD categories were ‘No Rain’ in 80 districts, ‘Scanty’ in 241 districts and ‘Deficient’ in 130 districts, under the proposed revision they will simply be ‘Deficient 2′ with 449 districts – thereby showing dramatically how widespread the conditions of the late and weak monsoon 2014 are – and ‘Deficient 1′ with 36 districts. Please read the rest at India Climate Portal.
The findings by the World Health Organisation on the quality of air in India’s cities are the strongest signal yet to our government (old and new, for the results of the 2014 general election will become known on 16 May) that economic ‘growth’ is a weapon that kills citizens through respiratory tract diseases and infections.
Amongst the 124 Indian cities in the new WHO database on urban air quality worldwide, one city only is at the WHO guideline for PM2.5 and one city only is just above the guidelines for PM10. As a bloc, the quality of air in India’s cities are at alarmingly high levels above the guidelines, above Asian averages (poor as they are, and even considering China’s recklessly poor record) and above world averages.
This is not a singular matter. Already, the WHO has warned that India has a high environmental disease burden, with a significant number of deaths annually associated with environmental risk factors. The Global Burden of Disease for 2010 ranked ambient air pollution as the fifth largest killer in India, three places behind household air pollution. Taken cumulatively, household and ambient air pollution constitute the single greatest risk factor that cause ill health -leading to preventable deaths – in India.
The WHO database contains results of ambient (outdoor) air pollution monitoring. Air quality is represented by ‘annual mean concentration’ (a yearly average) of fine particulate matter (PM10 and PM2.5, which means particles smaller than 10 or 2.5 microns). The WHO guideline values are: for PM2.5 – 10 micrograms/m3 annual mean; for PM10 – 20 micrograms/m3 annual mean. The two charts show just how dangerously above the WHO guidelines the air quality of our cities are.
Half of India’s urban population lives in cities where particulate pollution levels exceed the standards considered safe. A third of this population breathes air having critical levels of particulate pollution, which is considered to be extremely harmful. “We are also running out of ‘clean’ places. Small and big cities are now joined in the pain of pollution,” commented Down To Earth, the environment magazine.
Typically, the official Indian response was to question the WHO findings (these were carried out in the same way in 91 countries, and we don’t hear the other 90 complaining) and to reject them. The reason is easy to spot. Global offender Number One for air pollution amongst world cities is New Delhi, a city that has been pampered as the showcase for what the Congress government myopically calls “the India growth story”.
Hence government scientists are reported to have quickly said that WHO overestimated air pollution levels in New Delhi. “Delhi is not the dirtiest… certainly it is not that dangerous as projected,” said A B Akolkar, a member secretary of the Central Pollution Control Board.
The same recidivist line was parroted by Gufran Beig, chief project scientist at the Indian Institute of Tropical Meteorology (which otherwise does good work on the monsoon and on climate change). He is reported as having said that New Delhi’s air quality was better than Beijing’s, and that pollution levels in winter are relatively higher in New Delhi because of extreme weather events. Beig said: “The value which has been given in this (WHO) report is overestimating (pollution levels) for Delhi … the reality is that the yearly average is around 110 (micrograms).”
The WHO database has captured measurements from monitoring stations located in urban background, residential, commercial and mixed areas. The world’s average PM10 levels by region range from 26 to 208 micrograms/m3, with a world average of 71 micrograms/m3.
PM affects more people than any other pollutant. The major components of PM are sulfate, nitrates, ammonia, sodium chloride, black carbon, mineral dust and water. It consists of a complex mixture of solid and liquid particles of organic and inorganic substances suspended in the air. The most health-damaging particles are those with a diameter of 10 microns or less, which can penetrate and lodge deep inside the lungs. Chronic exposure to particles contributes to the risk of developing cardiovascular and respiratory diseases, as well as of lung cancer.
Central and state governments show no inclination to join the obvious dots. These are, that with more fuels being burned to satisfy the electricity and transport needs of a middle class now addicted to irresponsible consumption, the ‘India growth story’ is what we are choking to death on.
Update4: The water carried over land by Cyclone Phaillin has now travelled northwards and west. Daily monsoon system monitoring by the Centre for Ocean-Land-Atmosphere Studies – COLA (a scientific research centre to improve understanding and prediction of Earth’s climate variations) now show the danger from very heavy rain to districts in interior Odisha, eastern Madhya Pradesh, Chhattisgarh, Jharkhand, Bihar and eastern Uttar Pradesh.
The soil moisture in these regions is already high – as it should be at the end of the south-west monsoon – and very heavy spells of rain approaching 20mm in three hours will cause widespread flooding. The National Disaster Management Authority and the armed forces will continue to have to be on the alert for flood-related rescue calls from these regions.
Update3: It is very worrying to find that:
(a) satellite images shared by a global meteorological community are showing that Cyclone Phailin crossed the Indian coast between 1800 and 1900 (6pm and 7pm) but until well after 1900 (7pm) the Indian Meteorological Department told television news channels it was still approaching, and
(b) that hourly data from the automated weather stations on the eastern coast are not visible – no explanation as to whether they had been knocked out by the cyclonic conditions or whether the data links were down.
Update2: The armed forces and para-military and disaster relief and rescue teams are reported to be ready. Two Indian Air Force IL-76 aircraft have taken teams and equipment to Bhubaneshwar, Odisha. The Indian Air Force is on stand-by at various bases including Raipur, Nagpur, Jagdalpur, Barrackpore, Ranchi and Gwalior. At least 28 teams of the National Disaster Response Forces have been mobilised.
The East Coast Railway has cancelled or re-scheduled passenger trains between Visakhapatnam and Bhadrak on the Howrah-Chennai Main Line route, PTI News has reported. Among these trains are Puri-Cuttack-Puri passenger, Paradeep-Cuttack passenger, Cuttack-Paradeep passenger, Puri-Gunupur-Puri passenger, Puri-Rourkela passenger, Puri-Cuttack passenger, Bhadrak-Cuttack-Bhadrak passenger and Cuttack-Palasa-Cuttack passenger trains.
PTI News has reported that Odisha has opened control rooms for the cyclone. The helpline number of the Odisha Central Control Room is 0674-2534177
The district control room numbers are: Mayurbhanj 06792-252759, Jajpur 06728-222648, Gajapati 06815-222943, Dhenkanal 06762-221376, Khurda 06755-220002, Keonjhar 06766-255437, Cuttack 0671-2507842, Ganjam 06811-263978, Puri 06752-223237, Kendrapara 06727-232803, Jagatsinghpur 06724-220368, Balasore 06782-262674, Bhadrak 06784-251881.
In Odisha, 200 trained ham radio operators have been put on alert to help with rescue work. Eight stations have been put on ‘active alert’ while there are 28 stations as back-up around India.
Google Person Finder has readied a service in response to cyclone Phailin to help find friends and loved ones (thanks to @GautamGhosh)
Phailin is forecast to strike at IST 1730 (5.30 pm) local time. Trust Foundation has a status page (thanks to @nitabhalla)
Update1: For those in coastal Odisha and Andhra Pradesh, check TV and radio broadcasts for weather alerts and conditions in your district for as long as there is electricity. The government weather websites – India Meteorological Department and Mausam – have become very unresponsive probably due to high traffic.
Use the #Phailin hashtag on Twitter to find news and alerts near where you are. See useful examples like these:
Odisha Control Room numbers: Ganjam 06811-263978; Puri 06752-223237; Kendrapara 06727-232803 (thanks for this info to @aditya_manocha )
@debasis3: “Here we go. Rains have started in Bhubaneswar”
More Odisha Control Room numbers: Balasore 06782-262674; Bhadrak 06784-251881; Mayurbhanj 06792-252759; Jajpur 06728-222648 (thanks for this info to @ketan72 )
Important advice from the National Disaster Management Authority of India – If you are in the cyclone danger zone: check the house; secure loose tiles. remove dead wood or dry branches close to the house. Anchor movable objects like piles of wood, tin sheets (these are deadly when sent flying during a cyclone), loose bricks, rubbish bins (whose lids can fly like dangerous missiles in high wind), unbolted sign-boards.
Keep a few wooden boards, nails and a hammer ready to board up glass windows if they are in danger of shattering inwards. Keep emergency lighting ready. Ensure mobile phones are charged. Keep battery-operated torches ready batteries handy. Store boiled or filtered water for drinking. Keep dry food (such as biscuits) at hand if conditions worsen and you can’t cook a hot meal.
Zee News (television and online) has reported that in Odisha “thousands flee to shelter homes stocked with emergency food supplies and medicines”. National Disaster Response Force (NDRF) teams have reached Bhubaneswar (capital of Odisha) as evacuations have begun in Odisha and north Andhra Pradesh. Union Defence Minister A K Antony has asked armed forces to be ready to move in to Odisha and Andhra Pradesh.
NDTV (television and online) has reported that five districts “are preparing for the worst impact of the cyclone: Srikakulam in Andhra Pradesh and Ganjam, Puri, Khordha and Jagatsinghapur in Odisha.” Helicopters and food packages are ready for areas that are likely to be worst hit. A minister in the Andhra Pradesh state government has reportedly said that 64,000 people are being evacuated from Srikakulam, Vishakhapatnam and Vizianagaram and are being shifted to cyclone shelters.
The state of Odisha is preparing for Cyclone Phailin as it approaches from the Bay of Bengal. Consult the new map of Phailin and its possible pathways from the Global Disaster Alert and Coordination System (GDACS).
My reading of the forecast path of the cyclone – using the map sets from the National Centre for Medium Range Weather Forecasting (Earth System Science Organisation, Ministry of Earth Sciences) – is that in Odisha the districts of Ganjam, Puri, Jagatsinghpur, Kendrapara, Bhadrak, Baleshwar, Kordha, Jajapur, Cuttack, Nayagarh and Gajapati will be in the cyclone’s path beginning with increasingly heavy rain and fierce winds from Saturday morning 12 October 2013; in Andhra Pradesh the districts of Srikakulam, Vizianagaram and Visakhapatnam and in West Bengal the districts of Purba Medinipur will be in the cyclone’s path.
Look for the deep blue circle in the left panel from the first pair (top left, 24 hours) – extending out ahead of the cyclone core is the rain storm, which will cross the northern coast of Andhra Pradesh. In the second pair (top middle, 48 hours), the blue circle has moved closer to the coast – rainfall from the vast gyre of clouds around the approaching cyclone will extend far inland, in a great spike through Andhra Pradesh, parts of Madhya Pradesh and north into western Uttar Pradesh.
In the third pair (top right, 72 hours), the cyclone has made landfall with Odisha in the centre and affected districts in Andhra Pradesh to the south and West Bengal to the north – this is when the disaster management teams in the districts will be taxed to the utmost, having already been battered by heavy rain and unrelenting high-speed winds for two days.
In the fourth pair (lower left, 96 hours) the cyclone is still very active as it moves north-west to sweep across Odisha. In the fifth pair (lower middle, 120 hours) the cyclone core has finally weakened (no longer coloured deep blue) but has moved into Jharkhand, Bihar, West Bengal and eastern Uttar Pradesh. In the sixth pair (lower right, 144 hours) the cyclone’s force has dissipated leaving rain in its wake across eastern India.
Orissa Dairy has reported (‘Phailin upgraded to super cyclone’): “The very severe cyclonic storm Phailin, expected to make landfall at Gopalpur in Odisha, moved closer to the state and lay about 600 km southeast of Paradip, as the government sought the help of defence forces to boost its preparedness, official sources said on Thursday night.”
The Hindustan Times has reported (‘Cyclone Phailin: deep depression over Bay of Bengal intensifies further’): “A morning bulletin of Bhubaneswar meteorological department on Friday said the cyclone would move north-westward and cross Andhra Pradesh and Odisha coast between Kalingapatam (Andhra Pradesh) and Paradip, close to Gopalpur, by Saturday evening as a very severe cyclonic storm with a maximum sustained speed of 205-215km per hour.”
DNA has reported (‘Odisha braces for Cyclone Phailin’): “The state government said it was making adequate preparation to deal with the disaster that expects to cause large scale devastation mostly in state’s coastal southern districts. Durga puja festivities in Odisha have been cancelled as the state prepares for Cyclone Phailin which could be the worst since 1999 when 10,000 people died. The Air Force, Navy and national disaster management team have already been put on stand-by, while the rapid action force has deployed its forces on the ground. People in the low lying areas of the state will be evacuated by Saturday evening.”
Wondering what global warming has to do with violent rainstorms, hurricanes, typhoons, cyclones and other enormous destructive and very wet (and cold) weather phenomena you may have experienced in 2012 September? Here is an answer, provided by the ever-watchful (and woefully under-appreciated) National Climatic Data Center of the USA’s National Oceanic and Atmospheric Administration (NOAA).
(1) The average combined global land and ocean surface temperature for September 2012 tied with 2005 as the warmest September on record, at 0.67°C (1.21°F) above the 20th century average of 15.0°C (59.0°F). Records began in 1880.
(2) The globally-averaged land surface temperature for September 2012 was the third warmest September on record, at 1.02°C (1.84°F) above average. The globally-averaged ocean surface temperature tied with 1997 as the second warmest September on record, at 0.54°C (0.97°F) above average.
(3) The average combined global land and ocean surface temperature for January–September 2012 was the eighth warmest such period on record, at 0.57°C (1.03°F) above the 20th century average.
This was the third warmest September over land in the Northern Hemisphere and fourth warmest in the Southern Hemisphere. In the higher northern latitudes, parts of east central Russia observed record warmth, as did parts of Venezuela, French Guiana, and northern Brazil closer to the tropics. Nearly all of South America was much warmer than average as were western Australia and central to eastern Europe. Far eastern Russia, a few regions in southern Africa, and parts of China were cooler than average.
Moreover, this was the second warmest summer (June–August) for Hungary since national records began in 1900; Australia experienced its third warmest September since records began in 1950, with the nationally-averaged maximum temperature 1.94°C (3.49°F) above the 1961–1990 average; in Argentina the monthly-averaged daily, maximum, and minimum temperatures were all above normal (and remember both Australia and Argentina are both wheat producers and exporters); Japan observed record warmth during September, the greatest warmth was observed across northern Japan (regions of Hokkaido and Tohuko), which was 3.7°C (6.7°F) above average; in Britain, the average September temperature was 0.7°C (1.3°F) below the 1981–2010 average and was the coolest September for the region since 1994 (that’s certainly linked to the Arctic sea ice melting at a record rate this year).
This set of images helps explain the worrying 2012 monsoon season in South Asia and why drought conditions are emerging in more districts with every passing week.
We are coming up to the eight-week mark of the 2012 monsoon (taking the 04-06 June date as the ‘normal’ for the monsoon to become active over south-west India, after which the climatological system slowly advances over the peninsula and up into northern India).
The Indian Meteorological Department (IMD) has not helped, by maintaining a scientific detachment between forecasting science and the dire situation of farmers and consumers. With emergency drought programmes new being rolled out in many states (more than a month late), the IMD’s refusal to speak plainly to those who need the information the most is unpardonable.
Worse, the Department on its website and its communications walls off its forecasting behind a very unfriendly science interface (see this commentary for a detailed explanation), and appears oblivious about its responsibilities to those for whom it exists – the citizens of India who are waiting for rain.
This set of images (strips below, you can click on the images for the full-size versions) describes what the IMD ought to be disseminating (but stubbornly refuses to). These are 24, 48, 72 and 96 hour regional forecasts for South Asia of accumulated precipitation and temperature extremes.
Day 1 – 02 Aug 2012
Day 2 – 03 Aug 2012
Day 3 – 04 Aug 2012
Day 4 – 05 Aug 2012
The four regions you see in the panels are Peninsular India and Sri Lanka, Western India and Pakistan, Northern & Central India and Nepal, and Eastern India and Bangladesh. These are from the monsoon forecasting sub-site of the Center for Ocean-Land-Atmosphere Studies – of the Institute of Global Environment and Society (IGES) – which processes and synthesises data from the NOAA/NCEP, which is the National Oceanic and Atmospheric Administration (NOAA, the US government agency), National Centers for Environmental Prediction. These regional weather forecasts are presented as a running four-day ensemble of images showing daily forecasts of 2-metre temperature minima and maxima and accumulated precipitation covering the four sub-regions.
The India Meteorological Department (IMD) has released the long-awaited update of its long range forecast for the 2012 monsoon.
Stripped of its scientific jargon, this is what the update has said. There is a July model and an August model. For both months, there are three forecast categories: below normal in which rainfall in less than 94% of the long period average (LPA), normal in which the rainfall is between 94% and 106% of the LPA, and above normal in which rainfall is more than 106% of the LPA. Under the three categories, the forecast probabilities for July are (in the same order) 36%, 41% and 23% and for August they are 42%, 36% and 22%. Under any combination of probability therefore, this means that both July and August are going to be drier than usual, and coming on top of an unusually dry June, the scenarios for water availability and for agriculture come early September are all looking tough.
The volatility of the 2012 monsoon over north-eastern India can be seen in the images of the district weekly rainfall deviations for those states. Please bear in mind that with the late beginning of the 2012 monsoon, the week of June from 07 to 13 was for all practical purposes the first monsoon week. The colours signify major deviations – red for 50% of the average and below, green for 150% of the average and above. In Arunachal Pradesh, for the first week the average rainfall in districts was around 45%, the second week it was 41% and the third week it shot up to 124% – red is evenly scattered through the districts in the first two weeks and green districts appear in the third week.
In Assam, the first week’s average for all the state’s districts was 65% of the long period average, with red dominating. In the second week the average was 103%, with ‘red’ districts declining and a few greens appearing. In the third week the average zoomed to 184% with most districts being ‘green’. In neighbouring Meghalaya, the average for the districts in the three weeks was 63%, then 51% and then a steep rise to 225% in the third week. In stark contrast Nagaland and Manipur have for the duration of these three weeks seen a combined district rainfall average of 33% and if we remove the ‘green’ districts from both states of the third week, we get a dismal 15% average – it is of course quite likely that there are data anomalies in the numbers that IMD has collected from the north-east region, as automated weather stations that actually work are likely to be fewer in number than in ‘mainland’ India. (There is a spreadsheet for this data. If you want the data till date please write to me here: makanaka at pobox dot com.)
In the update, there is also a separate set of forecasts and probabilities for four major regions of India – North-West India, Central India, South Peninsula and North-East India. There are small variations for each of these in the definitions of below normal, normal and above normal. Here are the forecast probabilities for the regions:
The list of states in each of these four geographical regions is:
Northwest India: Jammu and Kashmir, Himachal Pradesh, Punjab, Rajasthan, Haryana, Chandigarh, Delhi, Uttaranchal and Uttar Pradesh.
Northeast India: Arunachal Pradesh, Meghalaya, Assam, Nagaland, Manipur, Mizoram, Tripura, Sikkim, West Bengal, Bihar and Jharkhand.
Central India: Gujarat, Madhya Pradesh, Chattisgarh, Maharashtra, Goa and Orissa.
South Peninsula: Andhra Pradesh, Karnataka, Tamil Nadu, Kerala, Lakshadweep and Andaman and Nicobar Islands.
The first stage forecast for the nation-wide season rainfall was issued on 2012 April 26 and this update was issued on 2012 June 22. The summary of the first stage forecast is:
“Southwest monsoon seasonal rainfall for the country as a whole is most likely to be Normal (96-104% of Long Period Average (LPA)) with the probability of 47%. The probability (24%) of season rainfall to be below normal (90-96% of LPA) is also higher than its climatological value. However, the probability of season rainfall to be deficient (below 90% of LPA) or excess (above 110% of LPA) is relatively low (less than 10%). Quantitatively, monsoon season rainfall is likely to be 99% of the LPA with a model error of ± 5%. The LPA of the season rainfall over the country as a whole for the period 1951-2000 is 89 cm.”
The IMD has said that it has taken into account the experimental forecasts prepared by the national institutes like Space Applications Centre, Ahmedabad, Centre for Mathematical Modeling and Computer Simulation, Bangalore, Center for Development of Advanced Computing, Pune and Indian Institute of Tropical Meteorology, Pune. Operational/experimental forecasts prepared by international institutes like the National Centers for Environmental Prediction, USA, International Research Institute for Climate and Society, USA, Meteorological Office, UK, Meteo France, the European Center for Medium Range Weather Forecasts, UK, Japan Meteorological Agency, Japan Agency for Marine-Earth Science and Technology, Asian-Pacific Economic Cooperation (APEC) Climate Centre, Korea and World Meteorological Organization’s Lead Centre for Long Range Forecasting – Multi-Model Ensemble have also been taken into account.
In July 2011, the US National National Oceanic and Atmospheric Administration‘s (NOAA) National Climatic Data Center updated the Climate Normals for the USA.These are three-decade averages of weather observations, including temperature. The new annual normal temperatures for the United States reflect a warming world.
Following procedures set by the World Meteorological Organization, normals shift each decade, rather than each year. As of July 2011, the climate normals span 1981–2010, dropping the 1970s, which were unusually cool. Last year, the normals included 1971–2000, leaving out the warmest decade on record (2001–2010).
NASA’s Earth Observatory has provided maps which show the differences between the old normals and the new normals. The top image shows July maximum temperatures, and the lower image shows the January minimum temperatures.
Positive temperature changes appear in orange and red, and negative temperature changes appear in blue.
On average, the contiguous United States experiences the lowest temperatures on January nights, and the highest temperatures on July days. Both January minimum temperatures and July maximum temperatures changed, but not by equal amounts.
Parts of the Great Plains, Mississippi Valley, and the Northeast experienced slightly cooler July maximums from 1981–2010 compared to 1971–2000 (top map).
A much more striking difference, however, appears in the January minimums (lower map). Nighttime temperatures in January were higher everywhere except the Southeast. Warmer nights were especially pronounced in the northern plains through the northern Rocky Mountains—several degrees warmer in some places.
Comparing average temperatures year round, every state experienced warmer temperatures in 1981–2010 compared to 1971–2000.
NOAA’s National Climatic Data Center (NCDC) released the 1981-2010 Normals on July 1, 2011. Climate Normals are the latest three-decade averages of climatological variables, including temperature and precipitation. This new product replaces the 1971-2000 Normals product. Additional Normals products; such as frost/freeze dates, growing degree days, population-weighting heating and cooling degree days, and climate division and gridded normals; will be provided in a supplemental release by the end of 2011.
Although warmer temperatures can have benefits, they pose hazards to some plants. For instance, higher nighttime temperatures enable some pests—such as the pine bark beetle and wooly adelgid—to thrive in places where they previously froze.
What are Normals? – In the strictest sense, a “normal” of a particular variable (e.g., temperature) is defined as the 30-year average. For example, the minimum temperature normal in January for a station in Chicago, Illinois, would be computed by taking the average of the 30 January values of monthly-averaged minimum temperatures from 1981 to 2010. Each of the 30 monthly values was in turn derived from averaging the daily observations of minimum temperature for the station. In practice, however, much more goes into NCDC’s Normals product than simple 30-year averages. Procedures are put in place to deal with missing and suspect data values. In addition, Normals include quantities other than averages such as degree days, probabilities, standard deviations, etc. Normals are a large suite of data products that provide users with many tools to understand typical climate conditions for thousands of locations across the United States.
What are Normals used for? – Meteorologists and climatologists regularly use Normals for placing recent climate conditions into a historical context. NOAA’s Normals are commonly seen on local weather news segments for comparisons with the day’s weather conditions. In addition to weather and climate comparisons, Normals are utilized in seemingly countless applications across a variety of sectors. These include: regulation of power companies, energy load forecasting, crop selection and planting times, construction planning, building design, and many others.
The National Climatic Data Center compiles climate normals from observations from thousands of stations in the National Weather Service (NWS) Cooperative Observer Program, as well as stations staffed by professionals within the NWS, the National Oceanic and Atmospheric Administration (NOAA), and the Federal Aviation Administration.