WWIN40 DEMS 200300

IWB (MORNING) DATED 20-09-2020



THE LOW PRESSURE AREA OVER NORTHEAST BAY OF BENGAL AND NEIGHBORHOOD
WITH THE ASSOCIATED CYCLONIC CIRCULATION EXTENDING UPTO 7.6 KM
ABOVE MEAN SEA LEVEL TILTING SOUTHWESTWARDS WITH HEIGHT PERSISTS.
IT IS LIKELY TO MOVE WEST-NORTHWESTWARDS DURING NEXT 2-3 DAYS AND
BECOME MORE MARKED OVER NORTHWEST BAY OF BENGAL & NEIGHBOURHOOD
DURING NEXT 24 HOURS.

THE WESTERN END OF THE MONSOON TROUGH CONTINUES TO RUN CLOSE TO THE
FOOTHILLS OF THE HIMALAYAS. ITS EASTERN END NOW PASSES THROUGH
BAREILLY, ALLAHABAD, DALTONGANJ, PURI AND THENCE EAST-SOUTHEASTWARDS
TO THE CENTER OF LOW PRESSURE AREA OVER NORTHEAST BAY OF BENGAL.

THE EAST-WEST SHEAR ZONE ROUGHLY ALONG LAT. 16ON ACROSS PENINSULAR
INDIA BETWEEN 3.1 KM & 7.6 KM ABOVE MEAN SEA LEVEL TILTING
SOUTHWARDS WITH HEIGHT ACROSS THE CYCLONIC CIRCULATION ASSOCIATED
WITH THE ABOVE LOW PRESSURE AREA PERSISTS.

THE CYCLONIC CIRCULATION OVER NORTH COASTAL ANDHRA PRADESH &
NEIGHBOURHOOD EXTENDING UPTO 0.9 KM ABOVE MEAN SEA LEVEL HAS BECOME
LESS MARKED.

THE CYCLONIC CIRCULATION EXTENDING UPTO 2.1 KM ABOVE MEAN SEA LEVEL
OVER NORTH INTERIOR ODISHA & NEIGHBOURHOOD HAS BECOME LESS MARKED.

THE WESTERN DISTURBANCE AS A TROUGH IN MID-TROPOSPHERIC WESTERLIES
WITH ITS AXIS AT 5.8 KM ABOVE MEAN SEA LEVEL NOW RUNS ROUGHLY ALONG
LONG. 72OE TO THE NORTH OF LAT. 28ON.

FORECAST:-

RAIN/THUNDERSHOWER AT MOST PLACES OVER ARUNACHAL PRADESH, ASSAM &
MEGHALAYA, NAGALAND, MANIPUR, MIZORAM & TRIPURA, SUB-HIMALAYAN WEST
BENGAL & SIKKIM, GANGETIC WEST BENGAL, ODISHA, EAST MADHYA PRADESH,
KONKAN & GOA, MADHYA MAHARASHTRA, MARATHWADA, VIDARBHA,
CHHATTISGARH,
COASTAL ANDHRA PRADESH & YANAM, TELANGANA, KARNATAKA STATE, KERALA
& MAHE AND LAKSHADWEEP; AT MANY PLACES OVER ANDAMAN & NICOBAR
ISLANDS, JHARKHAND, WEST MADHYA PRADESH AND RAYALSEEMA; AT A FEW
PLACES OVER BIHAR, GUJRAT REGION, SAURASHTRA AND KUTCH, TAMILNADU,
PUDUCHERRY & KARAIKAL; AT ISOLATED PLACES OVER UTTER PRADESH,
UTTRAKHAND, HARYANA, CHANDIGARH & DELHI, RAJASTHAN,

DRY WEATHER OVER REST PARTS OF THE COUNTRY (.)

WARNING:-

20 SEPTEMBER: HEAVY TO VERY HEAVY RAINFALL AT A FEW PLACES WITH
EXTREMELY HEAVY FALLS AT ISOLATED PLACES VERY LIKELY OVER COASTAL
KARNATAKA AND NORTH KERALA; HEAVY TO VERY HEAVY RAINFALL AT ISOLATED
PLACES WITH EXTREMELY HEAVY FALLS AT ISOLATED PLACES OVER ODISHA,
SOUTH INTERIOR KARNATAKA AND KONKAN & GOA; HEAVY TO VERY HEAVY
RAINFALL AT ISOLATED PLACES OVER COASTAL ANDHRA PRADESH & YANAM,
TELANGANA, RAYALASEEMA, NORTH INTERIOR KARNATAKA AND HEAVY RAINFALL
AT ISOLATED PLACES OVER VIDARBHA, CHHATTISGARH, JHARKHAND, GANGETIC
WEST BENGAL, ASSAM & MEGHALAYA, NAGALAND, MANIPUR, MIZORAM & TRIPURA,
GUJARAT REGION, MADHYA MAHARASHTRA AND MARATHWADA.

THUNDERSTORM ACCOMPANIED WITH HAIL/LIGHTNING VERY LIKELY AT ISOLATED
PLACES OVER UTTARAKHAND; THUNDERSQUALL (SPEED 50-60 KMPH)
ACCOMPANIED WITH LIGHTNING LIKELY AT ISOLATED PLACES OVER ANDAMAN &
NICOBAR ISLANDS AND THUNDERSTORM WITH LIGHTNING AT ISOLATED PLACES
OVER EAST UTTAR PRADESH, RAJASTHAN, MADHYA PRADESH, VIDARBHA,
CHHATTISGARH, JHARKHAND, SUB-HIMALAYAN WEST BENGAL & SIKKIM,
ARUNACHAL PRADESH, ASSAM & MEGHALAYA, NAGALAND, MANIPUR, MIZORAM &
TRIPURA, MADHYA MAHARASHTRA, MARATHWADA, TELANGANA, COASTAL ANDHRA
PRADESH & YANAM, RAYALASEEMA, INTERIOR KARNATAKA AND TAMILNADU,
PUDUCHERRY & KARAIKAL.

STRONG WIND (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER SOUTHWEST
& SOUTHEAST ARABIAN SEA, ALONG & OFF KERALA-KARNATAKA COASTS AND
LAKSHADWEEP AREA; (SPEED REACHING 50-60 KMPH) OVER NORTH, SOUTH &
ADJOINING CENTRAL BAY OF BENGAL. FISHERMEN ARE ADVISED NOT TO
VENTURE INTO THESE AREAS.

21 SEPTEMBER: HEAVY TO VERY HEAVY RAINFALL AT A FEW PLACES WITH
EXTREMELY HEAVY FALLS AT ISOLATED PLACES VERY LIKELY OVER COASTAL
KARNATAKA; HEAVY TO VERY HEAVY RAINFALL AT ISOLATED PLACES WITH
EXTREMELY HEAVY FALLS AT ISOLATED PLACES OVER ODISHA, ASSAM &
MEGHALAYA AND KONKAN & GOA; HEAVY TO VERY HEAVY RAINFALL AT ISOLATED
PLACES OVER VIDARBHA, CHHATTISGARH, GANGETIC WEST BENGAL, ARUNACHAL
PRADESH, MADHYA MAHARASHTRA, SOUTH INTERIOR KARNATAKA AND KERALA &
MAHE AND HEAVY RAINFALL AT ISOLATED PLACES OVER EAST MADHYA PRADESH,
JHARKHAND, SUB-HIMALAYAN WEST BENGAL & SIKKIM, NAGALAND, MANIPUR,
MIZORAM & TRIPURA, GUJARAT REGION, MARATHWADA, COASTAL ANDHRA
PRADESH & YANAM, TELANGANA, NORTH INTERIOR KARNATAKA AND TAMILNADU,
PUDUCHERRY & KARAIKAL.

THUNDERSTORM WITH LIGHTNING AT ISOLATED PLACES OVER EAST UTTAR
PRADESH, RAJASTHAN, MADHYA PRADESH, VIDARBHA, CHHATTISGARH, BIHAR, SUB-HIMALAYAN WEST BENGAL & SIKKIM, ARUNACHAL PRADESH, ASSAM &
MEGHALAYA, NAGALAND, MANIPUR, MIZORAM & TRIPURA, MADHYA MAHARASHTRA,
MARATHWADA, TELANGANA, COASTAL ANDHRA PRADESH & YANAM, RAYALASEEMA,
INTERIOR KARNATAKA AND TAMILNADU, PUDUCHERRY & KARAIKAL.

STRONG WIND (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER SOUTHWEST
& SOUTHEAST ARABIAN SEA, ALONG & OFF KERALA-KARNATAKA COASTS AND
LAKSHADWEEP AREA; (SPEED REACHING 50-60 KMPH) OVER NORTH, SOUTH &
ADJOINING CENTRAL BAY OF BENGAL. FISHERMEN ARE ADVISED NOT TO
VENTURE INTO THESE AREAS.=
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