Weather information is also available through TOLL FREE No. 1800 220 161 GOVERNMENT OF INDIA भारत सरकार INDIA METEOROLOGICAL DEPARTMENT भारत मौसम विान विभाग METEOROLOGICAL CENTRE, GANGTOK मौसम विान क , गंगटोक WEEKLY WEATHER REPORT FOR SIKKIM FOR THE WEEK 30 TH JANUARY 2019 TO 05 TH FEBRUARY 2020 SYNOPTIC SITUATION ON 30 TH JANUARY 2020: The Western Disturbance as a cyclonic circulation between 3.1 & 4.5 km above mean sea level over Jammu & Kashmir and neighbourhood was moving eastnortheastwards. However, the trough from the centre of the cyclonic circulation to north of Latitude 28°N at 3.1 Km above mean sea level had become less marked. A fresh feeble Western Disturbance was seen as a trough in mid & upper westerlies with its axis at 5.8 km above mean sea level roughly along Long. 55°E to the north of Lat. 30°N. A northsouth trough extending upto 0.9 km above mean sea level run from SubHimalayan West Bengal to Coastal Andhra Pradesh across interior Odisha. ON 31 ST JANUARY 2020: The Western Disturbance, then seen as a cyclonic circulation over Afghanistan & neighbourhood between 3.1 & 3.6 Km above mean sea level with trough aloft in mid & upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly along Long. 65°E to the north of Lat. 28°N. The northsouth trough extending upto 0.9 km above mean sea level from SubHimalayan West Bengal to Coastal Andhra Pradesh across interior Odisha had become less marked. A fresh Western Disturbance was likely to affect Western Himalayan region from 03rd February night onwards.
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Weather information is also available through TOLL FREE No. 1800 220 161
GOVERNMENT OF INDIA
भारत सरकार INDIA METEOROLOGICAL DEPARTMENT
भारत मौसम विज्ञान विभाग METEOROLOGICAL CENTRE, GANGTOK
मौसम विज्ञान कें द्र, गंगटोक
WEEKLY WEATHER REPORT FOR SIKKIM
FOR THE WEEK 30TH JANUARY 2019 TO 05TH FEBRUARY 2020
SYNOPTIC SITUATION
ON 30TH
JANUARY 2020: The Western Disturbance as a cyclonic circulation between 3.1 & 4.5 km above mean sea level over Jammu &
Kashmir and neighbourhood was moving eastnortheastwards. However, the trough from the centre of the cyclonic circulation to north of
Latitude 28°N at 3.1 Km above mean sea level had become less marked. A fresh feeble Western Disturbance was seen as a trough in mid &
upper westerlies with its axis at 5.8 km above mean sea level roughly along Long. 55°E to the north of Lat. 30°N. A northsouth trough
extending upto 0.9 km above mean sea level run from SubHimalayan West Bengal to Coastal Andhra Pradesh across interior Odisha.
ON 31ST
JANUARY 2020: The Western Disturbance, then seen as a cyclonic circulation over Afghanistan & neighbourhood between 3.1 &
3.6 Km above mean sea level with trough aloft in mid & upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly
along Long. 65°E to the north of Lat. 28°N. The northsouth trough extending upto 0.9 km above mean sea level from SubHimalayan West
Bengal to Coastal Andhra Pradesh across interior Odisha had become less marked. A fresh Western Disturbance was likely to affect
Western Himalayan region from 03rd February night onwards.
Weather information is also available through TOLL FREE No. 1800 220 161
ON 01ST
FEBRUARY 2020: The Western Disturbance as a cyclonic circulation over north Pakistan & neighbourhood then laid over North
Pakistan and adjoining Jammu & Kashmir between 5.8 & 7.6 km above mean sea level. The trough aloft in mid & upper tropospheric
westerlies with its axis at 5.8 km above mean sea level roughly along Long. 70°E to the north of Lat. 28°N had become less marked. A fresh
Western Disturbance was likely to affect Western Himalayan region from the night of 03rd February. A cyclonic circulation at 1.5 km above
mean sea level had laid over Central parts of Bangladesh.
ON 02ND
FEBRUARY 2020: The Western Disturbance as a cyclonic circulation over Jammu & Kashmir and neighbourhood had moved
away. A fresh Western Disturbance had laid as a trough in mid & upper tropospheric westerlies with its axis at 5.8 km above mean sea level
run along 51°E north of 33°N. The cyclonic circulation at 1.5 km above mean sea level over central parts of Bangladesh had become less
marked.
ON 03RD
FEBRUARY 2020: The Western Disturbance then seen as a cyclonic circulation over Afghanistan & neighbourhood at 3.1 km
above mean sea level with a trough aloft in mid & upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly along
Long. 60°E to the north of Lat. 30°N. A feeble Western Disturbance was likely to affect Western Himalayan Region from the night of 06th
February.
ON 04TH
FEBRUARY 2020: The Western Disturbance as a cyclonic circulation over Afghanistan & neighbourhood then laid over
Afghanistan & adjoining Pakistan at 3.1 km above mean sea level. The associated trough aloft in mid & upper tropospheric westerlies with
its axis at 5.8 km above mean sea level then run roughly along Long. 65°E to the north of Lat. 27°N. A fresh feeble Western Disturbance was
likely to affect Western Himalayan Region from the night of 06th February.
ON 05TH
FEBRUARY 2020: The Western Disturbance as a cyclonic circulation over north Pakistan & neighbourhood then laid over Jammu
& Kashmir and neighbourhood at 3.1 km above mean sea level. The associated trough aloft in mid & upper tropospheric westerlies with its
axis at 5.8 km above mean sea level had moved away northeastwards. A fresh feeble Western Disturbance was seen as a trough in mid &
upper tropospheric westerlies with its axis at 5.8 km above mean sea level roughly along Long. 60°E to the north of Lat. 30°N.
Weather information is also available through TOLL FREE No. 1800 220 161
ASSOCIATED WEATHER
Under the influence of the above mentioned synoptic situations moderate rainfall occurred over most places
of Sikkim on 31st January. Weather was mainly dry during rest days of the week.
MAXIMUM & MINIMUM TEMPERATURE (IN DEGREE CELSIUS) RECORDED DURING THE WEEK: