With summer intensifying across India, the India Meteorological Department (IMD) has issued a ‘yellow alert’ for several regions, warning of a fresh wave of extreme temperatures sweeping across the northern and central belts of the country. As per the latest advisory released on Tuesday, areas including South Uttar Pradesh, Madhya Pradesh, Rajasthan, Haryana, and Vidarbha will remain under the yellow alert till at least April 25, signaling an urgent need for preparedness against potentially hazardous heatwave conditions.
According to the IMD’s colour-coded weather alert system, a yellow alert signals weather that is not yet extreme but poses enough risk to warrant caution. Although it ranks below the more serious orange and red alerts, it is crucial for the public and authorities to take early precautions to mitigate health risks and potential disruptions. In this case, the alert has been prompted by rising surface temperatures and an absence of pre-monsoon showers, especially across northern plains and parts of central India.
The IMD’s daily weather bulletin also outlines the meteorological causes behind the surge in temperatures. A combination of clear skies, persistent dry northwesterly winds, and lack of moisture are driving up the mercury in many parts of the country. Heatwave conditions are likely to persist in Vidarbha between April 21 and 23, with adjoining regions already witnessing day temperatures well above seasonal norms.
In contrast, other parts of the country are experiencing a different weather pattern altogether. Southern and northeastern states are being influenced by moist easterly winds, which have led to sporadic thunderstorms, strong gusts, lightning, and light to moderate rainfall. Kerala and the Mahe region are among those expected to receive scattered rainfall, while northeastern states like Assam, Manipur, Meghalaya, Nagaland, Tripura, and Mizoram are predicted to get heavy rain in localized spells.
Uttarakhand, located in the foothills of the Himalayas, is also seeing signs of atmospheric instability. Lightning, isolated hailstorms, and strong winds have been reported in parts of the state, hinting at the early impacts of a developing Western Disturbance. The IMD has traced this system to western Iran and its surrounding regions, forecasting that it could affect weather patterns in northwestern India in the coming days.
For those unfamiliar with the thresholds, the IMD declares a heatwave when the maximum daytime temperature touches or exceeds 40 degrees Celsius in the plains, 37 degrees in coastal areas, or 30 degrees in hilly terrain, along with a temperature anomaly of 4.5 to 6.4 degrees Celsius above normal. Such deviations, especially when sustained over consecutive days, can cause significant public health concerns, ranging from heat exhaustion to heatstroke, particularly for vulnerable groups such as the elderly, children, and outdoor workers.
As temperatures soar and heatwaves extend their grip over large swathes of the country, the IMD continues to monitor conditions closely, issuing timely updates for public awareness and safety. With summer only just beginning, the coming weeks may witness an escalation in weather advisories as climate variability and regional factors interact to shape India’s seasonal patterns.
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