Severe Cyclonic Storm Nivar likely to cross Tamil Nadu and Puducherry coasts during mid-night of Nov 25th
![Severe Cyclonic Storm Nivar likely to cross Tamil Nadu and Puducherry coasts during mid-night of Nov 25th](https://thecanarapost.com/wp-content/uploads/2020/11/5_rsmc_5fbdf314807a2-850x560.png)
![](https://thecanarapost.com/wp-content/uploads/2020/11/5_rsmc_5fbdf314807a2-848x1200.png)
Cyclone Warning Division of the India Meteorology Department, Delhi: (at 11.30 am)
New Delhi, Nov 25: The severe cyclonic storm NIVAR over southwest Bay of Bengal moved west-northwestwards with a speed of 11 kmph during past six hours and lay centred at 0830 hrs IST of 25th November, 2020 over southwest Bay of Bengal about 240 km east-southeast of Cuddalore, about 250 km east southeast of Puducherry and 300 km south southeast of Chennai. It is very likely to intensify further into a very severe cyclonic storm during next 6 hours.
It is very likely to move west northwestwards and cross Tamil Nadu and Puducherry coasts between Karaikal and Mamallapuram around Puducherry during mid-night of 25th and early hours of 26th November 2020 as a very severe cyclonic storm with a wind speed of 120-130 kmph gusting to 145 kmph.
Forecast track and intensity are given below:
Date/Time(IST) | Position(Lat. 0N/ long. 0E) | Maximum sustained surface wind speed (Kmph) | Category of cyclonic disturbance |
25.11.20/0830 | 10.7/81.7 | 105-115 gusting to 130 | Severe Cyclonic Storm |
25.11.20/1130 | 11.0/81.3 | 110-120 gusting to 135 | Very Severe Cyclonic Storm |
25.11.20/1730 | 11.3/80.7 | 120-130 gusting to 145 | Very Severe Cyclonic Storm |
25.11.20/2330 | 11.9/80.0 | 120-130 gusting to 145 | Very Severe Cyclonic Storm |
26.11.20/0530 | 12.5/79.3 | 90-100 gusting to 110 | Severe Cyclonic Storm |
26.11.20/1730 | 13.0/78.5 | 55-65 gusting to 75 | Deep Depression |
27.11.20/0530 | 13.8/77.5 | 35-45 gusting to 55 | Depression |
Warnings:
(i) Rainfall
Fairly widespread to widespread rainfall/thunderstorm activity very likely over coastal and north interior Tamilnadu, Puducherry & Karaikal, south coastal Andhra Pradesh and Rayalaseema during 25th and 26th November and southeast Telangana during 26th November, 2020. Isolated extremely heavy rainfall activity also very likely over coastal & north interior Tamilnadu & Puducherry (Thanjavur, Tiruvarur, Nagapattinam, Cuddalore, Chennai, Kanchipuram, Chengalpattu, Myladuthirai, Ariyalur, Perambalur, Kallakurchi, Villupuram, Tiruvannamalai, Puducherry and Karaikal districts) during 25th; over Nellore and Chittoor districts of Andhra Pradesh on 25th and over Rayalaseema & southeast Telangana on 26th November, 2020.
Sub-Divisions | 25 Nov 2020* | 26 Nov 2020* | 27 Nov 2020* |
South Coastal Andhra Pradesh | Rainfall at most places with isolated heavy to very heavy and extremely heavy falls | Rainfall at most places with isolated heavy to very heavy and extremely heavy falls | Rainfall at many places |
Coastal & North Interior Tamilnadu, Puducherry & Karaikal | Rainfall at most places with heavy to very heavy rainfall at a few places and extremely heavy falls at isolated places | Rainfall at many places with heavy rainfall at isolated places | Rainfall at many places |
South Interior Karnataka | Rainfall at many places with heavy rainfall at isolated places | Rainfall at many places with heavy rainfall at isolated places | Rainfall at many places |
Rayalaseema | Rainfall at most places with heavy to very heavy rainfall with extremely heavy falls at isolated places | Rainfall at most places with heavy to very heavy rainfall at a few places and extremely heavy falls at isolated places | Rainfall at many places |
Telangana | Rainfall at a few places | Rainfall at most places with heavy to very heavy rainfall and extremely heavy falls at isolated places over southeast Telangana | Rainfall at many places |
(ii) Wind warning
· Gale wind speed reaching 105-115 kmph gusting to 130 kmph is prevailing over Southwest Bay of Bengal. It would further increase becoming 120-130 kmph gusting to 145 kmph during afternoon of 25th to early hours of 26th November.
· Squally wind speed reaching 55-65 kmph gusting to 75 kmph is prevailing along & off Tamil Nadu, Puducherry and adjoining South Andhra Pradesh coast and over Gulf of Mannar. It will gradually increase and become gale wind speed reaching 120-130 kmph gusting to 145 kmph along & off coastal districts of north Tamil Nadu and Puducherry (Nagapattinam, Karaikal, Myladuthurai, Cuddalore, Puducherry, Villupuram & Chengalpattu) and80-90 gusting to 100 kmph very likely over Tiruvarur, Kanchipuram, Chennai, Tiruvallur districts during afternoon of 25th to early hrs of 26th November, 2020.
· Gale wind speed reaching 65-75 kmph gusting to 85 kmph very likely over adjoining westcentral Bay of Bengal and along & off South Andhra Pradesh (Nellore & Chittoor districts), Gulf of Mannar and along and off south coastal districts of Tamil Nadu during afternoon of 25th to early hrs of 26th November, 2020.
(iii) Sea condition
· Sea condition is very high over Southwest Bay of Bengal and very rough to high along & off Tamil Nadu, Puducherry, south Andhra Pradesh coasts and over Gulf of Mannar. It would gradually become phenomenal over Southwest Bay of Bengal and along & off north Tamil Nadu, Puducherry coasts during afternoon of 25th to early hrs of 26th November, 2020.
(iv) Strom Surge Warning
· Tidal wave of about 1-1.5m height above the astronomical tide is very likely to inundate the low lying areas of north coastal districts of Tamilnadu & Puducherry near the place of landfall.
(v) (a) Damage expected over Nagapattinam, Myladuthurai, Cuddalore, , Villupuram & Chengalpattu districts of Tamilnadu and Karaikal & Puducherry:
Ø Total destruction of thatched houses/ extensive damage to kutcha houses. Some damage to old pucca houses. Potential threat from flying objects.
Ø Bending/ uprooting of power and communication poles.
Ø Major damage to Kutcha and and Pucca roads. Flooding of escape routes. Disruption of railways, overhead powerlines and signalling systems.
Ø Widespread damage to standing crops, plantations, orchards, falling of green coconuts and tearing of palm fronds. Blowing down of bushy trees like mango.
Ø Small boats, country crafts may get detached from moorings.
Ø Visibility severely affected.
(b) Damage expected over Tiruvarur, Kanchipuram, Chennai, Tiruvallaur districts of Tamilnadu and adjoining Andhra Pradesh:
Ø Damage to thatched houses/ huts with possibility of roof tops being blown off and unattached metal sheets may fly.
Ø Damage to power and communication lines.
Ø Damage to Kutcha and some damage to Pucca roads. Flooding of escape routes.
Ø Breaking of tree branches, uprooting of trees. Severe damage to banana and papaya trees, horticulture and crops & orchards. Large dead limbs blown from trees.
Ø Major damage to coastal crops. Damage to embankments/ salt pans.
(vi) Fishermen Warning & Action Suggested:
Ø Total suspension of fishing operations.
Ø Mobilise evacuation from coastal areas. Coastal hutment dwellers to be moved to safer places.
Ø People in affected areas to remain in safe places and indoors.
Ø Judicious regulation of rail, road and air traffic.
Ø Movement in motor boats and small ships unsafe.