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Heat, moisture, wind shear converged to trigger deadly Uttar Pradesh storm
A deadly storm in Uttar Pradesh on May 13–14, 2026 was caused by a collision of weather systems: a western disturbance meeting moisture from the Bay of Bengal under extreme heat. The event produced gusts up to 130 km/h and killed at least 111 people across 25 districts, with warnings about future similar events as climate warms.
Why It Matters
Experts say such pre-monsoon thunderstorms are becoming more frequent and violent as average temperatures rise and moisture-carrying capacity increases; the deaths highlight the lethality of lightning and fast-moving squall lines.
Timeline
4 Events
May 16, 2026: Article published detailing UP storm
May 16, 2026
The report describes the event as a collision of weather systems that produced a squall line with winds up to 130 km/h, driven by wind shear. It notes that predicting squall lines is possible 12–24 hours in advance, but warnings and timely response remain challenging.
Thursday, May 14, 2026: Immediate trigger identified
May 14, 2026
The immediate trigger was a passing western disturbance compounded by unusually strong moisture incursion from the Bay of Bengal, a point highlighted by IMD director general M Mohapatra.
Wednesday, May 13, 2026: Storm ingredients come together in UP
May 13, 2026
On Wednesday, the article notes that the ingredients for a severe thunderstorm came together in Uttar Pradesh: a western disturbance bringing upper-air moisture meets moist air drawn inland from the Bay of Bengal over a land surface heated above 40°C.
Last year's similar thunderstorm fatalities in northern India
May 22, 2025
The article notes that last May there were similar heavy dust storms and thunderstorms with winds around 100 km/h, resulting in at least 56 deaths across three states in northern India.