WWIN40 DEMS 301200

IWB (EVENING) DATED 30-09-2020



CHANGE IN LOW LEVEL WIND PATTERN INTO NORTH-WESTERLIES, REDUCTION
IN MOISTURE CONTENT AND CESSATION OF RAINFALL INDICATES THAT THE
SOUTHWEST MONSOON HAS FURTHER WITHDRAWN FROM SOME MORE PARTS OF
RAJASTHAN, REMAINING PARTS OF PUNJAB, ENTIRE WESTERN HIMALAYAN
REGION & HARYANA, CHANDIGARH & DELHI AND SOME PARTS OF UTTAR PRADESH.
THE WITHDRAWAL LINE OF THE SOUTHWEST MONSOON CONTINUES TO PASS
THROUGH LAT. 29ON/ LONG.81OE, LAKHIMPUR KHERI, SHAHJHANPUR, ALWAR,
NAGAUR AND LAT. 26ON/ LONG.70OE. CONDITIONS ARE BECOMING FAVOURABLE
FOR FURTHER WITHDRAWAL OF SOUTHWEST-MONSOON FROM SOME MORE PARTS OF
UTTAR PRADESH & RAJASTHAN AND SOME PARTS OF NORTHWEST MADHYA PRADESH
DURING NEXT 2-3 DAYS. THE CYCLONIC CIRCULATION OVER SUB-HIMALAYAN
WEST BENGAL & ADJOINING ASSAM EXTENDING UPTO 0.9 KM ABOVE MEAN SEA
LEVEL PERSISTS. THE CYCLONIC CIRCULATION OVER WESTCENTRAL & ADJOINING
NORTHWEST BAY OF BENGAL OFF NORTH ANDHRA PRADESH-SOUTH ODISHA
COASTS EXTENDING UPTO 7.6 KM ABOVE MEAN SEA LEVEL TILTING
SOUTHWESTWARDS WITH HEIGHT PERSISTS. UNDER ITS INFLUENCE, A LOW
PRESSURE ARES IS LIKELY TO FORM OVER NORTHWEST & ADJOINING
WESTCENTRAL BAY OF BENGAL OFF ODISHA COAST DURING NEXT 48 HOURS. THE
CYCLONIC CIRCULATION OVER SOUTH GUJARAT REGION & NEIGHBOURHOOD
BETWEEN 3.1 KM & 5.8 KM ABOVE MEAN SEA LEVEL PERSISTS. THE WESTERN
DISTURBANCE AS A CYCLONIC CIRCULATION BETWEEN 3.1 KM & 3.6 KM ABOVE
MEAN SEA LEVEL OVER NORTHWEST AFGHANISTAN & NEIGHBOURHOOD WITH THE
TROUGH ALOFT WITH ITS AXIS AT 5.8 KM ABOVE MEAN SEA LEVEL ROUGHLY
ALONG LONG.62OE TO THE NORTH OF LAT.28ON PERSISTS.

FORECAST:-

RAIN/THUNDERSHOWER AT MOST PLACES OVER ANDAMAN & NICOBAR ISLANDS AND
COASTAL ANDHRA PRADESH & YANAM; AT MANY PLACES OVER NAGALAND,
MANIPUR, MIZORAM & TRIPURA, ODISHA, RAYALASEEMA AND SOUTH INTERIOR
KARNATAKA; AT A FEW PLACES OVER ARUNACHAL PRADESH, ASSAM & MEGHALAYA,
WEST BENGAL & SIKKIM, JHARKHAND, MADHYA MAHARASHTRA, TELANGANA,
COASTAL & NORTH INTERIOR KARNATAKA, TAMILNADU PUDUCHERRY & KARAIKAL,
KERALA & MAHE AND LAKSHADWEEP AND AT ISOLATED PLACES OVER EAST
RAJASTHAN, BIHAR, MADHYA PRADESH, GUJARAT STATE, KONKAN & GOA,
MARATHWADA, VIDARBHA AND CHHATTISGARH (.)

DRY WEATHER OVER REST PARTS OF THE COUNTRY (.)

WARNING:-

30 SEPTEMBER (DAY 1):

HEAVY TO VERY HEAVY RAINFALL VERY LIKELY AT ISOLATED PLACES OVER
ODISHA AND COASTAL ANDHRA PRADESH & YANAM AND HEAVY RAINFALL VERY
LIKELY AT ISOLATED PLACES OVER ANDAMAN & NICOBAR ISLANDS, GENGETIC
WEST BENGAL, TELANGANA, RAYALSEEMA AND TAMILNADU, PUDUCHERRY &
KARAIKAL.

THUNDERSTORM WITH LIGHTNING AT ISOLATED PLACES VERY LIKELY OVER
EAST RAJASTHAN, VIDARBHA, CHHATTISGARH, JHARKHAND, WEST BENGAL &
SIKKIM, ODISHA, ANDAMAN & NICOBAR ISLANDS, ASSAM & MEGHALAYA,
NAGALAND, MANIPUR, MIZORAM & TRIPURA, MADHYA MAHARASHTRA,
MARATHAWADA, COASTAL ANDHRA PRADESH & YANAM, INTERIOR KARNATAKA,
TELANGANA, RAYALSEEMA, KERALA & MAHE AND TAMILNADU, PUDUCHERRY &
KARAIKAL.

STRONG WINDS (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER ANDAMAN
SEA. SQUALLY WEATHER (SPEED REACHING 40-50 KMPH OCCASIONALLY) VERY
LIKELY OVER NORTHWEST & WESTCENTRAL BAY OF BENGAL ALONG & OFF
ODISHA AND ANDHRA PRADESH COASTS.FISHERMEN ARE ADVISED NOT TO
VENTURE INTO THESE AREAS.



01 OCTOBER (DAY 2):

HEAVY TO VERY HEAVY RAINFALL VERY LIKELY AT ISOLATED PLACES OVER
ODISHA AND HEAVY RAINFALL VERY LIKELY AT ISOLATED PLACES OVER
NAGALAND, MANIPUR, MIZORAM & TRIPURA.

THUNDERSTORM WITH LIGHTNING AT ISOLATED PLACES VERY LIKELY OVER
JHARKHAND, GANGETIC WEST BENGAL, ANDAMAN & NICOBAR ISLANDS, ASSAM
& MEGHALAYA, NAGALAND, MANIPUR, MIZORAM & TRIPURA, MADHYA
MAHARASHTRA, MARATHWADA, TELANGANA AND COASTAL ANDHRA PRADESH &
YANAM.

STRONG WINDS (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER ANDAMAN
SEA. SQUALLY WEATHER (SPEED REACHING 40-50 KMPH OCCASIONALLY) VERY
LIKELY OVER NORTHWEST & WESTCENTRAL BAY OF BENGAL ALONG & OFF
ODISHA COAST.FISHERMEN ARE ADVISED NOT TO VENTURE INTO THESE AREAS.=
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