WWIN40 DEMS 221200

IWB (EVENING) DATED 22-12-2020



METEOROLOGICAL ANALYSIS:



THE FEEBLE WESTERN DISTURBANCE AS A CYCLONIC CIRCULATION BETWEEN
2.1 & 3.1 KM ABOVE MEAN SEA LEVEL OVER NORTH AFGHANISTAN &
NEIGHBOURHOOD PERSISTS. THE TROUGH ALOFT IN MID-TROPOSPHERIC
WESTERLIES WITH ITS AXIS AT 5.8 KM ABOVE MEAN SEA LEVEL NOW RUNS
ROUGHLY ALONG LONG. 62OE TO THE NORTH OF LAT. 32ON. IT IS LIKELY
TO AFFECT JAMMU, KASHMIR, LADAKH, GILGIT, BALTISTAN & MUZAFFARABAD
FROM 24TH DECEMBER, 2020. IN QUICK SUCCESSION ANOTHER ACTIVE
WESTERN DISTURBANCE IS LIKELY TO AFFECT WESTERN HIMALAYAN REGION
FROM 26TH WHICH COULD CAUSE SCATTERED TO FAIRLY WIDESPREAD
RAIN/SNOW OVER JAMMU, KASHMIR, LADAKH, GILGIT, BALTISTAN &
MUZAFFARABAD, HIMACHAL PRADESH, UTTARAKHAND AND RAIN/THUNDERSHOWERS
OVER ADJOINING PLANS OF NORTHWEST INDIA DURING THE SUBSEQUENT
2 DAYS. THE CYCLONIC CIRCULATION OVER SOUTHERN PARTS
BANGLADESH & NEIGHBOURHOOD AT 1.5 KM ABOVE MEAN SEA LEVEL
PERSISTS. THE CYCLONIC CIRCULATION OVER EQUATORIAL INDIAN
OCEAN & ADJOINING MALDIVES AREA EXTENDING UPTO 3.1 KM ABOVE MEAN
SEA LEVEL PERSISTS. THE CYCLONIC CIRCULATION OVER EQUATORIAL
INDIAN OCEAN TO THE SOUTH OF SOUTHWEST BAY OF BENGAL EXTENDING UPTO
3.1 KM ABOVE MEAN SEA LEVEL PERSISTS.



FORECAST:



RAIN/THUNDERSHOWER AT A FEW PLACES OVER AND LAKSHADWEEP AND AT
ISOLATED PLACES OVER ANDAMAN & NICOBAR ISLANDS, TAMILNADU
PUDUCHERRY & KARAIKAL AND KERALA & MAHE (.)

DRY WEATHER OVER REST PARTS OF THE COUNTRY (.)



WARNING:

22 DECEMBER (DAY 1):

COLD WAVE TO SEVERE COLD WAVE CONDITIONS VERY LIKELY AT ISOLATED
PLACES OVER ODISHA AND COLD WAVE CONDITIONS AT ISOLATED PLACES OVER
PUNJAB, HARYANA, CHANDIGARH & DELHI, HIMACHAL PRADESH, UTTARAKHAND,
UTTAR PRADESH, BIHAR, GANGETIC WEST BENGAL AND TELANGANA.
COLD DAY CONDITIONS VERY LIKELY AT ISOLATED PLACES OVER EAST UTTAR
PRADESH AND BIHAR. DENSE FOG VERY LIKELY IN ISOLATED POCKETS
OVER ASSAM & MEGHALAYA, PUNJAB, HARYANA, CHANDIGARH & DELHI,
SUB-HIMALAYAN WEST BENGAL & SIKKIM, BIHAR AND UTTAR PRADESH.
GROUND FROST VERY LIKELY AT ISOLATED PLACES OVER JAMMU &
KASHMIR, LADAKH, GILGIT-BALTISTAN, MUZAFFARABAD, HIMACHAL PRADESH,
PUNJAB, RAJASTHAN, EAST UTTAR PRADESH AND UTTARAKHAND.
THUNDERSTORM ACCOMPANIED WITH LIGHTNING VERY LIKELY AT ISOLATED
PLACES OVER TAMILNADU, PUDUCHERRY & KARAIKAL AND LAKSHADWEEP.
STRONG WIND (SPEED REACHING 45-55 KMPH GUSTING TO 65 KMPH)
VERY LIKELY OVER COMORIN AREA, GULF OF MANNAR, LAKSHADWEEP AND
MALDIVES AREAS. FISHERMEN ARE ADVISED NOT TO VENTURE INTO THIS AREA.

23 DECEMBER (DAY 2):

COLD WAVE TO SEVERE COLD WAVE CONDITIONS VERY LIKELY AT ISOLATED
PLACES OVER PUNJAB, HARYANA, CHANDIGARH & DELHI AND ODISHA AND COLD
WAVE CONDITIONS AT ISOLATED PLACES OVER UTTAR PRADESH, RAJASTHAN,
GANGETIC WEST BENGAL AND TELANGANA. COLD DAY CONDITIONS VERY
LIKELY AT ISOLATED PLACES OVER EAST UTTAR PRADESH AND BIHAR.
DENSE TO VERY DENSE FOG VERY LIKELY IN ISOLATED POCKETS OVER
PUNJAB, HARYANA, CHANDIGARH & DELHI AND DENSE FOG AT ISOLATED
POCKETS OVER SUB-HIMALAYAN WEST BENGAL & SIKKIM, BIHAR, UTTAR
PRADESH AND ASSAM & MEGHALAYA. GROUND FROST VERY LIKELY
AT ISOLATED PLACES OVER JAMMU & KASHMIR, LADAKH, GILGIT-BALTISTAN, MUZAFFARABAD, HIMACHAL PRADESH, PUNJAB, RAJASTHAN, EAST UTTAR
PRADESH AND UTTARAKHAND. THUNDERSTORM ACCOMPANIED WITH
LIGHTNING VERY LIKELY AT ISOLATED PLACES OVER TAMILNADU,
PUDUCHERRY & KARAIKAL AND LAKSHADWEEP. STRONG WIND (SPEED
REACHING 45-55 KMPH GUSTING TO 65 KMPH) VERY LIKELY OVER
LAKSHADWEEP, MALDIVES AREAS AND ADJOINING SOUTHEAST ARABIAN SEA.
FISHERMEN ARE ADVISED NOT TO VENTURE INTO THIS AREA.
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