Tracking the Beast
Was declared a Cyclonic Storm 'Amphan' on 16May2020, after which it rapidly intensified in Severe Cyclone. STH posted continuous updates on the tracks of the storm
RSMC, Delhi and JTWC issued some 33 advisory bulletins and 18 warnings respectively from 15May until the storm made landfall exactly as predicted on 20May near Kolkata
First track forecast and the final track observed are placed below:
Rainfall
Fact Sheet:
·
* Landfall process started at around
1430hrs/20May2020 between Digha and Hadia islands as predicted and passed thru
the Sunderbans between 1530hrs to 1730hrs.
· *
Wind speed at the time of landfall and crossing
coast 155kmph and going up to 185kmph in gusts. Max recorded windspeed in
Kolkata, from observatory at Dum Dum was 130kmph at 1855hrs on 20May.
·
* Windspeeds in Kolkata started increasing from
around 1700hrs, max windspeeds were around 1900-1920hrs after which the speeds
became less. Max winds were felt between 17-2100hrs.
* Approx 5000 trees uprooted by the storm.
* Approx 5000 trees uprooted by the storm.
· * Most impacts on South 24 Parganas and East Midnapur
and then Kolkata, Howrah and Hooghly districts.
·
* Was tracked continuously by DWR along the East
Coasts which could give accurate information on intensity, landfall point and
time, associated weather, storm surge, heavy rain and winds at different
districts.
· *
Heavy to extremely rain was observed in all the
affected areas. 24 hrs rain in Kolktata (Alipore) 240mm, Dum Dum 200mm.
· * After hitting Kolkata, the storm moved in a NNE
direction and crossed the Bangladesh border at 2330hrs and became a deep
depression in Bangladesh on 21May2020.
· * Windspeeds in Meghalaya were 60kmph on 21May2020
and affected the NE States thereafter.
STH cautionary advice (printed by media days prior to the storm):
STH cautionary advice (printed by media days prior to the storm):
Praful Rao
Kalimpong district
Darjeeling - Sikkim Himalaya
Kalimpong district
Darjeeling - Sikkim Himalaya
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