IMD FDP Fog Bulletin (16th Feb 2020)

Precipitation and Hailstorm:

• A fresh Western Disturbance is very likely to affect Jammu & Kashmir, Ladakh, Gilgit - Baltistan and higher reaches of Himachal Pradesh from 18^th February 2020 night. Under its influence, light Isolated to scattered rainfall/snowfall activity very likely over these regions during 18^th-19^thFebruary, 2020.
• In quick succession, another Western Disturbance very likely to affect Western Himalayan Region & adjoining plains from 20^th February. Under its influence, an induced cyclonic circulation is very likely to develop over southwest Rajasthan on 20^th February with high moisture feed from the Arabian Sea at lower & mid tropospheric levels.
• Under its influence light/moderate fairly widespread to widespread rain/snowfall very likely over Western Himalayan Region and scattered to fairly widespread rainfall over Punjab, Haryana, Chandigarh & Delhi during 20^th & 21^st February, 2020. There is possibility of isolated heavy falls over Himachal Pradesh and Uttarakhand on 21^st February.
• Due to interaction between warm & moist lower level easterlies (from anti-cyclonic circulation over Northwest Bay of Bengal) and middle & upper level westerlies (due to Western Disturbance), isolated to scattered rain/thundershower is also likely over Uttar Pradesh and north Madhya Pradesh on 20^th & 21^st and over north Chhattisgarh & Bihar on 21^st February, 2020.
• Strong wind (speed 20-30 kmph) likely over Punjab, Haryana, Chandigarh & Delhi and West Uttar Pradesh on 20^th & 21^st February, 2020.
• Detailed forecast & warnings for the above systems are as follow:

Note: * Rainfall till 0830 IST of next day. 

  Fog:

• Considering RH, wind speed & temperature inversion layer at lower levels and NWP model products for FOG, No significant dense fog likely in north India during next 4-5 days.

Cold wave & day:

•  Fall in minimum temperatures by 2-3°C over Punjab and Haryana during next 2-3 days. No significant change in temperatures over rest of the country during next 3-4 days.
•  Considering minimum temperatures & its trend, no cold wave conditions would occur over northern India.