WWIN40 DEMS 181200
IWB (EVENING) DATED 18-09-2020

WESTERN END OF THE MONSOON TROUGH CONTINUES TO RUN CLOSE TO THE
FOOTHILLS OF THE HIMALAYAS. THE EASTERN END OF IT CONTINUES TO PASS
THROUGH BAREILLY, FAIZABAD, PATNA, BHAGALPUR, MALDA AND THENCE EAST- NORTHEASTWARDS TO NAGALAND ACROSS ASSAM.THE CYCLONIC CIRCULATION
OVER TELANGANA & ADJOINING VIDARBHA EXTENDING UPTO 0.9 KM ABOVE MEAN
SEA LEVEL PERSISTS. THE EAST-WEST SHEAR ZONE ROUGHLY ALONG LAT. 16ON
ACROSS PENINSULAR INDIA BETWEEN 3.1 KM & 5.8 KM ABOVE MEAN SEA LEVEL
TILTING SOUTHWARDS WITH HEIGHT PERSISTS. THE CYCLONIC CIRCULATION
OVER WESTCENTRAL BAY OF BENGAL OFF NORTH ANDHRA PRADESH-SOUTH ODISHA
COASTS AT 1.5 KM ABOVE MEAN SEA LEVEL PERSISTS. THE CYCLONIC
CIRCULATION OVER SOUTHWEST BAY OF BENGAL OFF NORTH TAMILNADU COAST AT
7.6 KM ABOVE MEAN SEA LEVEL PERSISTS. THE CYCLONIC CIRCULATION OVER SUB-HIMALAYAN WEST BENGAL & NEIGHBOURHOOD BETWEEN 4.5 KM & 7.6 KM
ABOVE MEAN SEA LEVEL PERSISTS. THE NORTH-SOUTH TROUGH FROM
BIHAR TO SOUTH INTERIOR ODISHA ACROSS JHARKHAND EXTENDING UPTO 1.5 KM
ABOVE MEAN SEA LEVEL PERSISTS. THE WESTERN DISTURBANCE AS A
TROUGH IN MID-TROPOSPHERIC WESTERLIES WITH ITS AXIS AT 5.8 KM ABOVE
MEAN SEA LEVEL ROUGHLY ALONG LONG. 64OE TO THE NORTH OF LAT. 30ON
PERSISTS. A LOW PRESSURE AREA IS LIKELY TO DEVELOP OVER NORTHEAST
BAY OF BENGAL & NEIGHBOURHOOD AROUND 20TH SEPTEMBER, 2020 (.)


FORECAST:-

RAIN/THUNDERSHOWER AT MOST PLACES OVER ANDAMAN & NICOBAR ISLANDS,
SUB-HIMALAYAN WEST BENGAL & SIKKIM, MADHYA MAHARASHTRA, MARATHWADA,
KONKAN & GOA, COASTAL & NORTH INTERIOR KARNATAKA AND KERALA & MAHE;
AT MANY PLACES OVER ARUNACHAL PRADESH, ASSAM & MEGHALAYA, NAGALAND,
MANIPUR, MIZORAM & TRIPURA, GANGETIC WEST BENGAL, JHARKHAND,
VIDHARBHA, CHHATTISGARH, COASTAL ANDHRA PRADESH & YANAM, TELANGANA, RAYALASEEMA, SOUTH INTERIOR KARNATAKA AND LAKSHADWEEP; AT A FEW
PLACES OVER ODISHA, BIHAR, WEST MADHYA PRADESH, GUJARAT REGION AND CHHATTISGARH; AT ISOLATED PLACES OVER EAST UTTAR PRADESH, UTTARAKHAND
,HARYANA, CHANDIGARH & DELHI, RAJASTHAN, EAST MADHYA PRADESH,
SAURASHTRA & KUTCH AND TAMILNADU, PUDUCHERRY & KARAIKAL(.)


DRY WEATHER PREVAIL OVER REST OF THE COUNTRY (.)

WARNING:-

18 SEPTEMBER (DAY 1):

HEAVY TO VERY HEAVY RAINFALL VERY LIKELY AT ISOLATED PLACES OVER
SUB-HIMALAYAN WEST BENGAL & SIKKIM, ANDAMAN & NICOBAR ISLANDS,
MADHYA MAHARASHTRA, MARATHWADA AND KONKAN & GOA AND HEAVY RAINFALL
AT ISOLATED PLACES OVER WEST MADHYA PRADESH, BIHAR, GANGETIC WEST
BENGAL, ODISHA, ASSAM & MEGHALAYA, NAGALAND, SOUTH GUJARAT REGION,
COASTAL ANDHRA PRADESH & YANAM, VIDHARBHA, TELANGANA, RAYALASEEMA,
KARNATAKA AND KERALA & MAHE.

THUNDERSQUALL (SPEED 50-60 KMPH) ACCOMPANIED WITH LIGHTNING VERY
LIKELY AT ISOLATED PLACES OVER ANDAMAN & NICOBAR ISLANDS;
THUNDERSTORM WITH LIGHTNINGAT ISOLATED PLACES OVER EAST UTTAR PRADESH
, EAST RAJASTHAN, MADHYA PRADESH, VIDARBHA, CHHATTISGARH, BIHAR,
JHARKHAND, GANGETIC WEST BENGAL, ODISHA, ARUNACHAL PRADESH, ASSAM &
MEGHALAYA, NAGALAND, MANIPUR, MIZORAM & TRIPURA, GUJARAT STATE,
MADHYA MAHARASHTRA, MARATHAWADA, TELANGANA, COASTAL ANDHRA PRADESH &
YANAM, RAYALASEEMA, NORTH INTERIOR KARNATAKA AND TAMILNADU,
PUDUCHERRY & KARAIKAL.


STRONG WIND (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER SOUTHWEST
ARABIAN SEA, ALONG & OFF KERALA-KARNATAKA COASTS AND LAKSHADWEEP
AREA, GULF OF MANNAR AND ANDAMAN SEA. SQUALLY WEATHER (SPEED
REACHING 45-55 KMPH) ALONG & OFF SOUTH MAHARASHTRA-GOA COASTS.
FISHERMEN ARE ADVISED NOT TO VENTURE INTO THESE AREAS.

19 SEPTEMBER (DAY 2):

HEAVY TO VERY HEAVY RAINFALL VERY LIKELY AT ISOLATED PLACES OVER
ANDAMAN & NICOBAR ISLANDS, MADHYA MAHARASHTRA, KONKAN & GOA, KERALA &
MAHE AND COASTAL & SOUTH INTERIOR KARNATAKA AND HEAVY RAINFALL AT
ISOLATED PLACES OVER CHHATTISGARH, ODISHA, SOUTH GUJARAT REGION,
MARATHAWADA, COASTAL ANDHRA PRADESH & YANAM, TELANGANA, RAYALASEEMA
AND NORTH INTERIOR KARNATAKA.

THUNDERSQUALL (SPEED 50-60 KMPH) ACCOMPANIED WITH LIGHTNING VERY
LIKELY AT ISOLATED PLACES OVER ANDAMAN & NICOBAR ISLANDS;
THUNDERSTORM WITH LIGHTNINGAT ISOLATED PLACES OVER EAST UTTAR PRADESH
, RAJASTHAN, MADHYA PRADESH, VIDARBHA, CHHATTISGARH, JHARKHAND,
ODISHA, GUJARAT REGION, TELANGANA, COASTAL ANDHRA PRADESH & YANAM,
RAYALASEEMA, INTERIOR KARNATAKA AND TAMILNADU, PUDUCHERRY & KARAIKAL.


STRONG WIND (SPEED REACHING 45-55 KMPH) VERY LIKELY OVER CENTRAL,
SOUTHEAST & SOUTHWEST ARABIAN SEA, ALONG & OFF KERALA-KARNATAKA
COASTS AND LAKSHADWEEP AREA, GULF OF MANNAR, SOUTHEAST BAY OF BENGAL
AND ANDAMAN SEA. SQUALLY WEATHER (SPEED REACHING 45-55 KMPH) ALONG &
OFF MAHARASHTRA-GOA COASTS. FISHERMEN ARE ADVISED NOT TO VENTURE
INTO THESE AREAS.=
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