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New India Meteorological Department alerts for Wednesday, October 7, flag a thunderstorm window for Delhi–NCR, rain and lightning across south peninsular belts, and evening showers around Bengaluru and coastal Karnataka. Expect brief but intense cells, quick wind shifts, and short-lived visibility drops. Travellers should plan buffer time and follow airport advisories, especially during lightning halts. District-wise maps and nowcast panels will update through the day as cells fire and decay.
For Delhi–NCR, IMD guidance keeps the prime convective window from mid-afternoon into late evening, when surface heating peaks and outflows trigger new cells. Gust bands are pegged around 40–50 kmph, briefly gusting near 60 kmph in isolated pockets. Expect rapid onset showers with frequent lightning and patchy waterlogging. Indira Gandhi International could see sporadic ground holds during lightning strikes; build extra buffer for metro and road commutes.
Kerala–TN heavy rain zones and fisher caution
Kerala’s Met Centre highlights thunderstorms with lightning today, with gusts near 30–40 kmph; widespread heavy rain risk strengthens again on October 9–10. On the Tamil Nadu side, recent RMC Chennai bulletins emphasised heavier bursts along the Western Ghats, keeping Coimbatore–Nilgiris–Theni corridors watchful for short-duration downpours today. Fisher update: as of 00:00 IST, no marine warning is in force along Kerala or Tamil Nadu coasts; still watch for local squalls near thunderheads.
Bengaluru–coastal Karnataka evening showers and travel delays
South Interior Karnataka, including Bengaluru, retains a thunderstorm-and-lightning signal today, with showers most probable late afternoon to evening. Brief crosswinds and reduced visibility can slow ramp operations at Kempegowda International and delay metro headways during intense cells. Coastal Karnataka also keeps intermittent showers, so airport pickups and intercity drives may run slower than usual during peak bursts. Cochin International should monitor nearby lightning cells for short ground stops.
Delhi–NCR nowcast and what changes on October 8
Tonight’s NCR activity should taper past midnight. On Thursday, October 8, IMD shifts the northwestern signal toward breezy spells, with gusts typically around 30–40 kmph and only isolated thunder. Over Kerala–Tamil Nadu, many districts trend to moderate rain on Thursday before heavier pulses redevelop Friday into Saturday. Keep refreshing IMD’s district-warning maps and Delhi’s nowcast tiles for hour-by-hour triggers and airport planning cues.