The last ten days have been the driest period since March. Most parts of the country during this period observed high temperatures with heatwave conditions being experienced in isolated pockets of Gujarat and Rajasthan.
Pre-Monsoon activity began to be experienced in the country after May 10, picking up in intensity from May 12 onwards. Many parts of Northwest, Central, East India and the southern peninsula experienced fairly widespread rain and thundershowers.
The reason behind widespread rain in Northwest India was a Western Disturbance in the hills and adjoining plains and an induced cyclonic circulation over Rajasthan, which was being fed by moist winds from the Arabian Sea. In East India, the reason for rain was a cyclonic circulation over Bihar and West Bengal. And a trough from this system extended up to south Kerala and Interior Tamil Nadu, across Jharkhand, Chhattisgarh, Vidarbha, Telangana and Interior Karnataka giving rain in the region. A cyclonic circulation off Tamil Nadu coast was also giving good amounts of rain in the southern Peninsula.
Rain due to these weather systems had pulled down the temperatures in most parts of the country. And since the last 48 hours, temperatures are far below normal over Northwest India, southern peninsula, Madhya Pradesh and Maharashtra.
Now the Western Disturbance has moved away and the cyclonic circulation over Northwest India is also becoming insignificant. Therefore, normal wind pattern of dry and hot westerly and northwesterly winds will begin to dominate the region leading to cession of rain and rise in temperatures.
In the next 2 to 3 days the temperatures are expected to reach their normal levels over most parts of the country including Northwest India.
Image Credit: Times of India
