Forty Millimetres Means Nothing — What an Impact-Based District Warning Actually Says
A rainfall figure is not a warning. The same 40 mm is routine in Kozhikode and a flood in Jaisalmer, and the same thunderstorm means avoid penetration to a dispatcher, lodging risk to a farmer and a steep ramp event to a grid scheduler. How VayuMet turns one district forecast into four different advisories, what the colour ladder means, and where the method stops.
1,064 mm in a Day — Anatomy of the Valsad Deluge, India's Third-Highest Daily Rainfall Ever | A VayuMet Analysis
Umbergaon (Valsad) logged ~1,064 mm in 24 hours — India's third-highest daily total on record. VayuMet decodes the drivers on annotated GFS 00 & 12 UTC charts: a well-marked low, a mid-level cyclonic circulation, deep ascent, and upper-level divergence that aligned vertically over Valsad by 23 July — with a surging Arabian Sea Low-Level Jet and near-zero steering locking the rain machine over one coastal belt for 36 hours.
Gangetic Plains on Fire: Severe Heat Wave 22–29 May — Relief Storms Due 30 May
A powerful heat wave is gripping Punjab, Haryana, Delhi, UP and Bihar with temperatures 6–9°C above normal. Fazilka (Punjab) forecast to touch 48.7°C on 29 May — the peak day. A line of severe thunderstorms sweeping across Punjab, Haryana, Delhi and UP on 30 May is expected to bring dramatic relief, with convective gusts up to 95 km/h over Gurdaspur.