Around four to five Western disturbances approached western Himalayas during the month of March. None of them were active and capable of giving any significant weather activity in terms of rain or snow over the hills of North India.
The first ten days of April have also not witnessed any significant Western Disturbance. Dry and hot winds from west and Northwest direction continued over Northern Plains leading to heat wave conditions at many places. Parts of Himachal Pradesh Jammu division and Uttarakhand also witnessed heat wave.
Many parts of Haryana, Delhi, West Uttar Pradesh and parts of Punjab may continue to sizzle until April 12. This may be one of the longest spells of heat wave affecting northern plains. A Western Disturbance is expected to approach Western Himalayas on night of April 12 and another Western disturbance will be around April 15.
Rain and thunderstorm activities may commence over Western Himalayas from April 13th. Isolated pre-monsoon activities such as thunderstorm, dust storm and light thundershowers may occur over parts of Punjab, Haryana, Delhi and West Uttar Pradesh between April 13 and 17. Heat wave may abate from above mentioned areas during that period.