IMD issues 7-day heavy rain, thunderstorm warning for Assam districts
Synopsis
The IMD has placed 13 Assam districts on heavy rainfall and thunderstorm alert for a full seven-day stretch — from Kokrajhar in the west to Hailakandi in the south. With the Brahmaputra system entering its most vulnerable phase, this week's weather window carries real flood and landslide risk for millions across the state's plains and hill districts.
Key Takeaways
The IMD has forecast heavy to very heavy rainfall and thunderstorms across Assam from 10 June to 16 June .
13 districts — including Kokrajhar , Lakhimpur , Hailakandi , and Sribhumi — are under specific heavy rainfall warnings.
Western Assam districts face the most intense rainfall between 11 June and 13 June .
The entire Brahmaputra Valley , including Kamrup (Metro) and Nagaon , is under a thunderstorm and lightning watch.
Residents in low-lying and vulnerable areas have been advised to stay alert and monitor official updates.
Warnings are valid from 8:30 am on the specified day to 8:30 am the following day.
The India Meteorological Department (IMD) has forecast widespread rainfall accompanied by thunderstorms and lightning across Assam for the seven-day period from 10 June to 16 June, with several districts likely to experience heavy to very heavy rainfall at isolated locations, officials confirmed on Wednesday. The alert was issued by the Regional Meteorological Centre (RMC), Guwahati.
Districts Under Warning
The IMD has flagged 13 districts — including Kokrajhar, Chirang, Baksa, Barpeta, Tamulpur, Nalbari, Udalguri, Sonitpur, Biswanath, Lakhimpur, Dhemaji, Hailakandi, and Sribhumi — for thunderstorms accompanied by heavy to very heavy rainfall on different days during the forecast window. All warnings are valid from 8:30 am of the specified day to 8:30 am the following day.
Region-by-Region Breakdown
In western Assam, districts such as Kokrajhar, Chirang, and Baksa are expected to bear the brunt of intense rainfall, particularly between 11 June and 13 June. Central Assam districts — Tamulpur and Udalguri — face heavy to very heavy rainfall at isolated locations, while the broader Brahmaputra Valley, including Kamrup (Metro), Kamrup (Rural), Darrang, Nagaon, Morigaon, and Hojai, is under a thunderstorm and lightning watch.
In Upper Assam, districts including Lakhimpur, Dhemaji, Jorhat, Majuli, and Dibrugarh are forecast to receive moderate to heavy rainfall with isolated very heavy spells. Southern Assam — covering Dima Hasao, Cachar, Hailakandi, and Sribhumi — is also under persistent rain and thunderstorm warnings, with Hailakandi and Sribhumi specifically listed for heavy to very heavy rainfall on certain days.
IMD Advisory to Residents
The meteorological department has urged residents, particularly those in vulnerable and low-lying areas, to remain alert and follow official weather updates. Rainfall activity is expected to remain widespread throughout the week, with no district in the state likely to see a sustained dry spell during the period.
Context and Risk
This comes as Assam enters its peak pre-monsoon and early-monsoon phase, a period historically associated with flash floods, landslides, and riverbank erosion across the state's flood-prone plains and hill districts. The Brahmaputra and its tributaries typically begin swelling during this window, raising the risk of inundation in low-lying areas. Authorities in flood-vulnerable districts have been advised to remain on standby as conditions evolve over the coming days.
Point of View
System-level moisture influx rather than isolated convective events. What the forecast does not spell out, but history does, is that prolonged heavy rain across the Brahmaputra Valley at this time of year is a precursor to the first major flood pulse of the season. State disaster management agencies' preparedness in the next 48 hours — pre-positioning boats, opening relief camps, alerting embankment guards — will determine whether this becomes a manageable weather event or a humanitarian one. The warning also underscores a recurring gap: district-level last-mile communication of IMD alerts to rural and riverine communities remains inconsistent, and that is where lives are lost.
NationPress
6 Aug 2026
Frequently Asked Questions
Which districts in Assam are under IMD heavy rain warning for June 2025?
The IMD has warned 13 districts including Kokrajhar, Chirang, Baksa, Barpeta, Tamulpur, Nalbari, Udalguri, Sonitpur, Biswanath, Lakhimpur, Dhemaji, Hailakandi, and Sribhumi for heavy to very heavy rainfall and thunderstorms between 10 June and 16 June 2025.
How long will the heavy rain and thunderstorm conditions last in Assam?
According to the IMD forecast issued by the Regional Meteorological Centre, Guwahati, adverse weather conditions are expected to persist across Assam for seven days, from 10 June to 16 June. Rainfall activity is forecast to remain widespread throughout the week.
Which part of Assam faces the most intense rainfall this week?
Western Assam — particularly Kokrajhar, Chirang, and Baksa — is expected to experience the most intense rainfall, especially between 11 June and 13 June, according to the IMD district-wise forecast.
What precautions has the IMD advised for Assam residents?
The IMD has urged residents, particularly those in vulnerable and low-lying areas, to remain alert and follow official weather updates regularly. All warnings are valid from 8:30 am on the specified day until 8:30 am the following day.
Why is the Assam rain warning significant in June?
June marks the onset of Assam's peak pre-monsoon and early-monsoon phase, when the Brahmaputra and its tributaries typically begin to swell. Sustained heavy rainfall during this period historically raises the risk of flash floods, landslides, and riverbank erosion across the state's plains and hill districts.
