NEW DELHI, November 11, 2026 — The India Meteorological Department’s latest subdivision warnings have renewed the heavy-rain alert for Tamil Nadu and Puducherry and extended a four-day heavy-rain warning for the Andaman and Nicobar Islands. The IMD November 11 weather warning is a fresh update to the forecast issued a day earlier: the current Chennai-region page now lists heavy rain for November 11, thunderstorms and squalls through November 14, and another heavy-rain period from November 15 to 17.
The Andaman and Nicobar Islands face a longer spell. The Port Blair meteorological centre’s warning page, issued on November 11, lists heavy rain from November 11 through November 14, with thunderstorms, lightning and squalls continuing through November 17. The warnings are regional forecasts, not confirmation that every district or island will receive the same rainfall. No closures, ferry cancellations or damage reports were confirmed in the material reviewed for this update.
The new issue date matters because an earlier Tamil Nadu and Puducherry warning page, issued on November 10, had shown no warning for November 11 to 14. The latest page has changed that position. Readers should use the current district-level forecast and local administration advisories rather than rely on screenshots or summaries based on the previous bulletin.
The Regional Meteorological Centre in Chennai now lists heavy rain for Tamil Nadu and Puducherry on November 11. Its seven-day warning table also identifies thunderstorms, lightning and squalls from November 11 to 14, followed by heavy-rain warnings on November 15, 16 and 17. The page gives a subdivision-level outlook; it does not name every district expected to receive the heaviest rainfall. District forecasts and nowcasts are needed to establish where the risk is most immediate.
The shift is more than a routine date rollover. The November 10 page had marked November 11 to 14 as days with no warning for Tamil Nadu and Puducherry, while retaining heavy-rain warnings later in the week. The new page, carrying a November 11 issue date, adds a heavy-rain warning for the current day and thunderstorm-related hazards for the next several days. The forecast may be revised again as observations and model guidance change.
For the Andaman and Nicobar Islands, the latest page from the Meteorological Centre at Port Blair lists heavy rain on each of the first four forecast days, November 11 to 14. Thunderstorms, lightning and squalls remain in the outlook through November 17. That combination matters for island communities and people using local boats, ferries and tourism services, where a spell of rain and squally weather can affect visibility and sea conditions. The warning itself does not announce a service suspension; operators and passengers should wait for specific local advisories.
The IMD November 11 weather warning does not describe a single system affecting the whole country. They divide the forecast by meteorological subdivision and by day. The current Tamil Nadu and Andaman pages carry heavy-rain warnings, while other regional pages list thunderstorms or no warning. That distinction is important when a broad national weather headline is circulated without the underlying dates and locations.
The latest available subdivision page for Assam and Meghalaya, issued on November 10, lists thunderstorms, lightning and squalls for November 11, but no warning from November 12 onward in that seven-day table. The separate page for Nagaland, Manipur, Mizoram and Tripura also lists thunderstorm-related activity on November 11; it does not show a heavy-rain warning for that day. These are narrower and more specific descriptions than a blanket claim that all northeastern states face heavy rainfall on November 11.
That distinction is relevant because some news summaries published on November 10 described isolated heavy rain across four northeastern states and a wider alert covering many parts of India. The Times of India’s November 10 report focused on the Northeast and Andaman Islands, while Navbharat Times published a broader forecast covering 20 states and winds of up to 75 kmph. The current IMD subdivision tables provide the more precise day-by-day picture: thunderstorm warnings remain in parts of the Northeast, but the heavy-rain warning is not shown for the Naga-Manipur-Mizoram-Tripura group on November 11.
The western Himalayan region has its own timetable. The IMD page for Jammu and Kashmir and Ladakh, issued on November 11, shows no warning for November 11, a heavy-rain warning for November 12, and thunderstorm, lightning and squall activity for November 13 and 14. Himachal Pradesh has no warning for November 11 in the current table, with thunderstorm-related warnings for November 12 and 13. These dates are consistent with a separate western-disturbance forecast rather than the rain system affecting the southern peninsula and the islands.
The current New Delhi regional warning pages also show no warning for November 11 across Delhi, Haryana and Chandigarh, East and West Uttar Pradesh, Uttarakhand, Punjab and the Rajasthan subdivisions listed there. That does not guarantee dry weather at every location, but it means the latest subdivision tables do not support treating the day as a uniform heavy-rain event across northern India.
Also read: IMD Warns of Heavy Rain in Tamil Nadu, Puducherry; Andaman and Northeast Also on Alert
Heavy rain at a few locations can cause waterlogging even when neighbouring districts receive much less precipitation. Residents in low-lying areas should monitor local alerts, keep drains clear where it is safe to do so and avoid driving or walking through flooded stretches. The forecast does not mean that every town will face flooding, and it should not be used to assume that schools, offices or transport services have been closed. Those decisions require separate notices from the relevant authorities.
Thunderstorms and squalls create a different set of risks. People should move indoors when lightning is heard, avoid open fields and water bodies, and not shelter beneath isolated trees. Outdoor workers should secure loose materials and stay away from exposed structures during strong gusts. If a local authority issues an advisory for a particular district or coastal area, that notice takes precedence over a general subdivision summary.
For the Andaman and Nicobar Islands, travellers should check with ferry operators, local administrations and tourism providers before setting out. A heavy-rain warning combined with thunderstorms can reduce visibility and make small-boat operations more difficult, but the current IMD page does not itself announce a ferry cancellation or port closure. Such operational decisions should be attributed to the agency or operator that issues them.
Farmers in Tamil Nadu and the islands should use the district-level agricultural advisory for their crop and stage of cultivation. Where heavy rain is expected, field drainage, protection of harvested produce and postponement of spraying or fertiliser application may be appropriate, but the right action depends on local soil conditions and the crop. A general weather alert is not a substitute for the district-specific guidance issued by the agricultural meteorological service.
The next useful signal will be the IMD’s subsequent daily bulletin and the district-wise warning maps. If the rain-bearing system strengthens, shifts or weakens, the warning area and its timing may change. The present forecast identifies heavy rain in Tamil Nadu and Puducherry on November 11, renewed heavy-rain periods there from November 15 to 17, and heavy rain over the Andaman and Nicobar Islands through November 14. The Northeast and Himalayan warnings are separate and should be read on their own dates.
For readers, the main change from the previous day’s forecast is clear: Tamil Nadu and Puducherry are no longer shown as having no warning on November 11, while the Andaman and Nicobar Islands remain under a multi-day heavy-rain alert. The IMD’s latest subdivision pages should guide local decisions, and any report of actual flooding, transport disruption or closures should be treated as a separate development requiring confirmation from the responsible authority.