Cyclone Helen to cross Tamil Nadu on Wednesday night
20 Nov 2013 10:24 PM IST
Cyclone Helen would cross the south Andhra Pradesh coast near Kavali on the night of 21 November, the IMD said.
The deep depression over west-central Bay of Bengal would intensify into a cyclonic storm in the next few hours and to a severe cyclonic storm in the next 24 hours, it said.
Moving west-northwestwards for some time and then west southwestwards, it would cross south Andhra Pradesh and adjoining north Tamil Nadu coasts between Chennai and Ongole close to Kavali around the night of 21 November, the IMD said.
IMD further warned of heavy to very heavy rainfall at a few places with isolated extremely heavy rainfall over coastal Andhra Pradesh from Wednesday onwards.
Squally winds with speed of 55-65 kmph gusting to 75 kmph would prevail along and off north Andhra Pradesh and north Tamil Nadu and Puducherry coasts, it said, adding sea conditions would be very high along and off Andhra Pradesh coast.
IMD's bulletin on the cyclone
The cyclonic storm HELEN over west central Bay of Bengal moved slightly west-north westwards during past 6 hrs and lay centered near latitude 15.20N and longitude 84.00E, about 470 km east-northeast of Chennai, 430 km east of Kavali, 320 km east-southeast of Machilipatnam and 290 km south-southeast of Vishakhapatnam. The system would further intensify into a severe cyclonic storm during next 24 hrs.
It would move west-northwestwards for some time, then west-southwestward and cross south Andhra Pradesh coast between Sriharikota and Ongole, close to Kavali around night of 21 November 2013.
Warning for southern Andhra Pradesh, north Tamil Nadu and Puducherry coasts
(i)Rainfall
Under its influence, rainfall at most places with heavy to very heavy rainfall at a few places would occur over coastal Andhra Pradesh commencing from 20 November 2013 night. Isolated extremely heavy falls (25cm or more) would occur over south coastal Andhra Pradesh on 21 and 22 November. Rainfall at most places with isolated heavy to very heavy falls would occur over Rayalseema and adjoining north Tamil Nadu on 22 November. Moderate rainfall would occur at many places over south Odisha on 21 November.
(ii)Squally/Gale Winds
Squally winds speed reaching 55-65 kmph gusting to 75 kmph would prevail along and off south Andhra Pradesh coast commencing from 20 November 2013 night. The wind speed would gradually increase upto gale wind speed of 100-110 kmph, gusting to 120 kmph at the time of landfall. Squally winds speed reaching 55-65 kmph gusting to 75 kmph would prevail along and off north Andhra Pradesh, north Tamil Nadu and Puducherry coasts from 20 November night.
(iii)Storm Surge
Storm surge of about 1 to 1.5m height above astronomical tide would inundate the low lying areas of Nellore, Prakasham, Guntur and Krishna districts of Andhra Pradesh at the time of landfall.
(iv)Sea condition
Sea condition will be rough to very rough along and off south Andhra Pradesh coasts from 20 November 2013 night, becoming very high from 21 November 2013 evening onwards. It will be rough to very rough along and off north Andhra Pradesh, north Tamil Nadu and Puducherry coasts during the same period.
(v)Damage expected due to a cyclonic storm over south coastal Andhra Pradesh
Extensive damage to thatched roofs and huts. Minor damage to power and communication lines due to uprooting of large avenue trees. Flooding of escape roots.
(vi)Action Suggested
- South Andhra Pradesh coast
- Total suspension of fishing operations. Coastal hutment dwellers to be moved to safer place. People in affected areas to remain indoors.
- North Andhra Pradesh and north Tamil Nadu coasts
- Fishermen are advised not to venture into sea.
The deep depression over west-central Bay of Bengal would intensify into a cyclonic storm in the next few hours and to a severe cyclonic storm in the next 24 hours, it said.
Moving west-northwestwards for some time and then west southwestwards, it would cross south Andhra Pradesh and adjoining north Tamil Nadu coasts between Chennai and Ongole close to Kavali around the night of 21 November, the IMD said.
IMD further warned of heavy to very heavy rainfall at a few places with isolated extremely heavy rainfall over coastal Andhra Pradesh from Wednesday onwards.
Squally winds with speed of 55-65 kmph gusting to 75 kmph would prevail along and off north Andhra Pradesh and north Tamil Nadu and Puducherry coasts, it said, adding sea conditions would be very high along and off Andhra Pradesh coast.
IMD's bulletin on the cyclone
The cyclonic storm HELEN over west central Bay of Bengal moved slightly west-north westwards during past 6 hrs and lay centered near latitude 15.20N and longitude 84.00E, about 470 km east-northeast of Chennai, 430 km east of Kavali, 320 km east-southeast of Machilipatnam and 290 km south-southeast of Vishakhapatnam. The system would further intensify into a severe cyclonic storm during next 24 hrs.
It would move west-northwestwards for some time, then west-southwestward and cross south Andhra Pradesh coast between Sriharikota and Ongole, close to Kavali around night of 21 November 2013.
Warning for southern Andhra Pradesh, north Tamil Nadu and Puducherry coasts
(i)Rainfall
Under its influence, rainfall at most places with heavy to very heavy rainfall at a few places would occur over coastal Andhra Pradesh commencing from 20 November 2013 night. Isolated extremely heavy falls (25cm or more) would occur over south coastal Andhra Pradesh on 21 and 22 November. Rainfall at most places with isolated heavy to very heavy falls would occur over Rayalseema and adjoining north Tamil Nadu on 22 November. Moderate rainfall would occur at many places over south Odisha on 21 November.
(ii)Squally/Gale Winds
Squally winds speed reaching 55-65 kmph gusting to 75 kmph would prevail along and off south Andhra Pradesh coast commencing from 20 November 2013 night. The wind speed would gradually increase upto gale wind speed of 100-110 kmph, gusting to 120 kmph at the time of landfall. Squally winds speed reaching 55-65 kmph gusting to 75 kmph would prevail along and off north Andhra Pradesh, north Tamil Nadu and Puducherry coasts from 20 November night.
(iii)Storm Surge
Storm surge of about 1 to 1.5m height above astronomical tide would inundate the low lying areas of Nellore, Prakasham, Guntur and Krishna districts of Andhra Pradesh at the time of landfall.
(iv)Sea condition
Sea condition will be rough to very rough along and off south Andhra Pradesh coasts from 20 November 2013 night, becoming very high from 21 November 2013 evening onwards. It will be rough to very rough along and off north Andhra Pradesh, north Tamil Nadu and Puducherry coasts during the same period.
(v)Damage expected due to a cyclonic storm over south coastal Andhra Pradesh
Extensive damage to thatched roofs and huts. Minor damage to power and communication lines due to uprooting of large avenue trees. Flooding of escape roots.
(vi)Action Suggested
- South Andhra Pradesh coast
- Total suspension of fishing operations. Coastal hutment dwellers to be moved to safer place. People in affected areas to remain indoors.
- North Andhra Pradesh and north Tamil Nadu coasts
- Fishermen are advised not to venture into sea.
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