Friday 28 June 2013

cyclone aila

CYCLONE AILA-Cyclone AILA (IMD designation: BOB 02, JTWC designation: 02B, also known as Severe Cyclonic Storm AILA) was the second tropical cyclone of the 2009 North Indian Ocean cyclone season. A relatively strong tropical cyclone, it caused extensive damage in India and Bangladesh.
As of 27 May 2009 (2009-05-27), 330 people have been killed by Aila, and at least 8,208 more are missing, while about 1 million people are homeless. Health officials in Bangladesh confirmed a deadly outbreak of diarrhea on 29 May, with more than 7,000 people being infected and four dying. In Bangladesh, an estimated 20 million people were at risk of post-disaster diseases due to Aila. Damage totaled $552.6 million (2009 USD).                       

METEOROLOGICAL HISTORY
       
Late on the 21st of May 2009, the Joint Typhoon Warning Center reported that a Tropical Disturbance had persisted about 950 KILOMETERS (590 mi) to the south of Kolkata, in India and had developed within the Southwest Monsoon.The disturbance at this time had a broad and poorly organized area of deep convection, which was located to the southeast of the low level circulation center which had consolidated into a single circulation during the previous 12 hours. Environmental analysis indicated that the system was in an area of favorable conditions to develop with low vertical wind shear and warm sea surface temperatures. During 22 May 2009, the disturbance developed further with a Tropical Cyclone Formation Alert being issued early the next day by the JTWC as the low level circulation center had become stronger and more defined] Later that morning RSMC New Delhi designated the disturbance as Depression BOB 02.
During the day Depression BOB02 continued to slowly intensify until early the next day when it was upgraded to a Deep Depression by RSMC New Delhi, and designated as Tropical Cyclone 02B by the JTWC. This came as satellite imagery had shown further organization of the depression. Later that day, RSMC New Delhi reported that the deep depression had intensified into a Cyclonic storm and had been named as AILA. whilst located about 350 Kilometers (220 mi) to the southeast of SAGAR Island. AILA became a severe cyclonic storm at 06UTC on May 25 and made landfall at its peak intensity (60kt, 967hPa) .
IMPACT:-
(INDIA) In India, at least 149 people were killed, two by electrocution, and hundreds
others were left homeless as torrential rains led to flooding. High winds uprooted numerous trees, blocking roads throughout the region. More than 15,000 people in eight villages were reportedly isolated from relief crews by severe flooding.At least 18 of the 45 fatalities in West Bengal were in Kolkata, the region where AILA made landfall. All transit systems in the city of Kolkata were halted and daily life was at a standstill due to the storm. The areas and districts affected by the cyclone in West Bengal include East MIDNAPORE, Howrah, Hooghly, BURDWAN South 24 PARGANAS and Kolkata . In the West Bengal state, more than 100,000 people were left homeless as a result of AILA. At least 100 river embankments were breached by storm surge produced by the cyclone. Throughout the country, at least 150,000 people were left homeless. In northern areas of the state, heavy rains triggered numerous landslides in Darjeeling that killed 22 people and left 6 others missing. At least 500 homes were also damaged in the area. At least 50,000 hectares of agricultural land was lost during the storm, costing an estimated RS 125 CRORE (US$26.3 million). Throughout the state, an estimated 40,000 homes were destroyed and 132,000 others were damaged. At least 350,000 people affected by AILA Later reports indicated that upwards of 2.3 million were displaced by the storm as 175,000 homes were destroyed and 270,000 were damaged.

(BANGLADESH)-Torrential rains from Aila resulted in at least 179 fatalities from flooding. More than 400,000 people were reportedly isolated by severe flooding in coastal regions of Bangladesh. Numerous villages were either completely submerged in floodwaters or destroyed. Dozens of people are reportedly missing throughout the country. A storm surge of 3 m Torrential rains from Aila resulted in at least 179 fatalities from flooding.More than 400,000 people were reportedly isolated by severe flooding in coastal regions of Bangladesh. Numerous villages were either completely submerged in floodwaters or destroyed.[10] Dozens of people are reportedly missing throughout the country.[39] A storm surge of 3 m (10 ft) impacted western regions of Bangladesh, submerging numerous villages. Several rivers broke through embankments, causing widespread inland flooding. In one region alone, more than 50,000 people were left homeless. Despite warnings to remain at port, numerous fishing vessels sailed into the storm. Port officials stated that more than 500 fishermen had gone missing since the storm made landfall.[40] In Patuakhali, a dam broke and submerged five villages. Numerous homes were destroyed by the subsequent flooding and tens of thousands of people were left stranded in the villages. In Chandpur, two pontoons sank while docked in port.[41] At least 800 people were injured by the storm and 2.6 million were affected. Unofficial reports indicate that the death toll in the country has reached 121; however, the Bangladeshi government denied this claim. An estimated 58,950 animals were killed by the storm with up to 50,000 deer missing.
ENVIRONMENTAL IMPACT

The Sunderbans, a region which houses 265 of the endangered Bengal Tigers, was inundated with 6.1 m (20 ft) of water. Dozens of the tigers are feared to have drowned in Aila's storm surge along with deer and crocodiles. As of 27 May 2009 (2009-05-27), one tiger has been found alive; it was found in a waterlogged cowshed following the cyclone's landfall. Additionally the forest remains under an estimated 2.4 m (7.9 ft) of water. On 27 May, conservationists have begun a search for the tigers throughout the forest. The search teams were supplied with fresh drinking water for the tigers as their natural water source was inundated with salt water from Aila's storm surge.

PRECAUTIONARY MEASURES:-
  • CHECK THE AREA AROUND THE HOUSE-REMOVE DEAD OR DRYING TREES OR PLANTS,ANCHOR REMOVAL OBJECTS LIKE LOOSE BRICKS ,GARBAGE CANS, SIGN BOARDS ETC.
  • PROMPTLY DEMOLISH CONEMNED BUILDINGS.
  • THOSE WHO HAVE RADIO SETS SHOULD ENSURE THAT THE RADIO IS FULLY SERVICEABLE .IN CASE OF TRANSISTORS AN EXTRA SET OF BARRIERS SHOULD BE KEPT HANDY.
  • MAKE PROVISIONS FOR CHILDREN AND ADULTS REQUIRING SPECIAL DIETS.
  • BE ALERT FOR HIGH WATER IN AREAS WHERE STREAMS OF RIVERS MAY FLOOD DUE TO  HEAVY RAINS.