Representative image. Sayamindu Dasgupta, CC BY-SA 2.0, Wikimedia Commons
हिन्दी में सारांश Summary in Hindi
- 11 नवंबर सुबह 8.30 बजे तक दक्षिण बंगाल के 7 जिलों में गरज और बिजली की चेतावनी है।
- वधियों में हल्की बारिश या गरज के साथ बौछारें संभव हैं।
- धिक संभावना है।
বাংলায় সারাংশ Summary in Bangla
- 11 নভেম্বর সকাল 8.30 পর্যন্ত দক্ষিণবঙ্গের 7 জেলায় বজ্রবিদ্যুতের সতর্কতা রয়েছে।
- কলকাতা, হাওড়া ও হুগলিতে পূর্বাভাসের প্রথম দুই পর্যায়ে কয়েকটি জায়গায় হালকা বৃষ্টি বা বজ্রসহ বৃষ্টি হতে পারে।
- এই তিন জেলায় 12 নভেম্বর সকাল 8.30 থেকে শুষ্ক আবহাওয়ার সম্ভাবনা বেশি।
Why it matters
People outdoors need both the district name and the warning validity to judge which forecast applies to their plans. The IMD bulletin gives specific shelter guidance for thunderstorm and lightning activity.
The Kolkata rain alert in the India Meteorological Department’s 10 November 2026 midday bulletin includes a thunderstorm and lightning warning for seven South Bengal districts. The warning covers Kolkata, Howrah, Hooghly, North 24 Parganas, South 24 Parganas, East Midnapore and Nadia during the period ending at 8.30 am on 11 November.
The Regional Meteorological Centre in Kolkata forecasts light rain or thundershowers at a few places in the city during the first two forecast periods. Its warning table separately places the risk of thunderstorms and lightning at one or two places in each of the seven districts during the first period.
What the Kolkata rain alert means through Wednesday morning
The official South Bengal forecast and warning bulletin is dated 10 November and marked midday. Its first period starts at 1 pm on 10 November and runs until 8.30 am on 11 November. All times in this article are Indian Standard Time.
For people planning an evening journey or outdoor work in Kolkata and the neighbouring districts, that first period is the one carrying the lightning warning. The document describes the expected distribution as one or two places. Residents should read it as a district-level warning that includes a risk at particular locations.
Rainfall coverage and a warning are shown in separate tables. The forecast says light rain or thundershowers may occur at a few places in Kolkata, Howrah and Hooghly during both the first and second periods. The warning table marks thunderstorms and lightning for the first period, followed by entries marked NIL, meaning no warning in those cells, for the later periods.
The forecast calendar changes at 8.30 am
NewsPlainly has converted the bulletin’s numbered periods into a calendar below. The changeover matters because the next day’s forecast begins in the morning. For example, the period described as day two begins at 8.30 am on 11 November and continues into the following morning.
| Period | Validity in IST | Kolkata, Howrah and Hooghly |
|---|---|---|
| Day one | 1 pm, 10 November to 8.30 am, 11 November | Light rain or thundershowers at a few places; lightning warning at one or two places |
| Day two | 8.30 am, 11 November to 8.30 am, 12 November | Light rain or thundershowers at a few places |
| Day three onward | 8.30 am, 12 November to 8.30 am, 17 November | Dry weather most likely |
The distinction also matters for the two 24 Parganas districts. North and South 24 Parganas have light rain or thundershowers at a few places in the first two periods, followed by light rain or thundershowers at one or two places in the third period. Their dry-weather forecast starts in the fourth period, at 8.30 am on 13 November.
East and West Midnapore follow that three-period rainfall pattern as well. The warning table gives East Midnapore a thunderstorm and lightning warning in the first period. Nadia has light rain or thundershowers at one or two places in the first two periods, then dry weather most likely from the third.
Where IMD advises people to take shelter
The bulletin identifies the possibility of lightning strikes, especially in open fields, as an impact for the warning districts. It advises people to take shelter in a safe place during thunderstorm or lightning activity, avoid sheltering under trees or electric poles, and avoid contact with water bodies.
That guidance applies to people outdoors in the seven warning districts, including field workers and people travelling on foot. It provides an action during thunderstorm activity, while the district table provides the geographical scope and the forecast header supplies the time window.
Readers following the Kolkata rain alert can use the Regional Meteorological Centre’s current bulletins alongside their district forecast. NewsPlainly’s 9 November Bengal forecast report covered the previous day’s bulletin. Today’s seven-district lightning warning is the new development in the 10 November document. This article records the midday forecast issued on 10 November, so later official revisions should be read with their own issue times.
Minimum temperatures are forecast to fall later
The temperature outlook for Gangetic West Bengal expects little change in minimum temperatures over the next two days. It then projects a gradual fall of 3 to 4 degrees Celsius over the subsequent three days. That is a forecast for the region, with the cooling placed after the initial two-day period.
The immediate Kolkata rain alert and the later temperature outlook therefore operate on different time spans. The warning table covers the near-term lightning risk, while the seven-day district table gives the longer rainfall outlook. Residents planning beyond Wednesday can check the next dated bulletin as that forecast period approaches.
Frequently asked questions
Which districts have the lightning warning?
Kolkata, Howrah, Hooghly, North 24 Parganas, South 24 Parganas, East Midnapore and Nadia in the midday bulletin of 10 November.
When does Kolkata get a dry-weather forecast?
From 8.30 am on 12 November, the third period in this bulletin, dry weather is most likely.
What does IMD advise during lightning?
Take shelter in a safe place, avoid shelter under trees or electric poles, and avoid contact with water bodies.