The exit of the Western Disturbance from over J&K will bring down the minimum temperatures as the icy northerly winds originating from the snowfall areas will dominate northwest from tomorrow, the 19th of January onwards. The night temperatures are expected to come down by 6 to 7°C over Punjab, Haryana, Delhi and west Uttar Pradesh.
The maximum temperatures would continue to fall by 2 to 4°C due to cloudy to partly cloudy weather during the next 24 hours. Cloud subsidence will again increase the maximum temperatures to make days warmer in northwest India thereafter.
This strong Western Disturbance that lies over east Jammu & Kashmir will exit the region while moving northeastwards after the next 24 hours. This ousting of the weather system will also reduce rain in Delhi, Punjab and Haryana within a day.
Jammu & Kashmir, Himachal Pradesh and Uttarakhand will continue to receive heavy snowfall at a few places for a day. Isolated places in these areas could also experience very heavy snowfall during this period. Snowfall and rain will reduce considerably thereafter.
The left over moisture from the passing Western Disturbance in Jammu & Kashmir added with drop a in minimum temperatures and slow wind speed will lead to fog in Delhi, Punjab, Haryana and west Uttar Pradesh. Moderate to dense foggy conditions are expected in these parts from 19th onwards. Hills in the northwest will have dense to very dense fog during this period.
The passing Western Disturbance will also bring rain over Bihar, sub-Himalayan West Bengal, Sikkim and Arunachal Pradesh during the next three days.