Prolonged Spell Of Pre Monsoon Over North India, Heat Wave To Abate

Heat wave is sweeping parts of North India and the national capital for the last few days. Mercury level breached 44- 45°C mark at few places like Ganganagar, Pilani, Hisar, Narnaul, Alwar and Delhi ( Palam, Mungeshpur, Najafgarh, Ridge, Pitampura).  Highest temperature of 46.4°C across the region was recorded at Najafgarh. All these pockets reeled under heat wave conditions.

Plains of Punjab, Haryana, Delhi, North Rajasthan and Uttar Pradesh have largely remained free from any significant Pre-Monsoon weather activity in the month of June, so far. Earlier, the month of March and April remained driest on record with rainfall deficiency in excess of 95% across these states.  

The month of May did witness a few thunderstorms and wet spell with gusty winds. Dry weather conditions were back again in June and most parts were swept by severe heat for days together. Month of June has been largely deficit for the region, with no rains and parched conditions between 01-13^th June. Complete northwest India ( Hills & Plains) has been deficit by 85% during this period.

An active Western Disturbance and its induced cyclonic circulation will move across the region between 15^th and 20^thJune. Isolated activity can be expected even on 13^th and 14^thJune. The spread and the intensity will increase 15^thJune onward and is expected to peak on 18^th and 19^th June 2020. The remnant of the system will last even on 20^th and 21^st to cast sporadic weather activity.

North India covering mostly upper half of Punjab, Haryana, North & East Rajasthan, Delhi and West Uttar Pradesh will witness week long pre monsoon weather activity.  Thunderstorm and sharp showers will be accompanied with lightning and gusty winds. 

Intense weather activity will be supported by local heat, generating strong stormy conditions between 18^th and 20^thJune. Loud thunder and severe lightening will impact flying operations during the course of activity. Strong and gusty winds may result felling of trees and fly away dangerously  any loose objects.  Road and air traffic will be hit severely for short durations. Disruption of transmission line and power outages may also accompany.

Heat wave conditions will ease out during this period from the national capital, northern parts and foothills of Punjab, Haryana and West Uttar Pradesh. North and eastern parts of Rajasthan will also be relieved of extreme heat and the day temperature will plunge significantly. Prolonged wet spell for the national capital will also be a prelude to the eagerly awaited monsoon.