New Delhi, April 28 -- Amid scorching heat across several parts of the country, India Meteorological Department (IMD) scientist Akhil Srivastava on Tuesday explained regarding a weather alert for northern, eastern and western regions of India.

Srivastava said thunderstorm activity is expected in Punjab and Haryana over the coming days, which may lead to a drop in temperatures by 2-4 degrees Celsius. He added that an orange alert for thunderstorms has been issued for Bihar, Gangetic West Bengal, Odisha and Jharkhand, while heavy to very heavy rainfall is likely in northeastern India over the next week.

"In the northern region, a heatwave has been prevailing for the past 15 days. However, due to a western disturbance centred around 66deg ...