IMD forecasts week of heavy rain across Assam, red alert for July 11

Imphal, India Jul 11, 2026 ALN: Assam is likely to witness a week of persistent rainfall, with the India Meteorological Department (IMD) forecasting heavy showers across the state until July 17. This forecast is significant as Assam, located in the northeastern part of India, experiences its monsoon season during this time of the year, which traditionally brings substantial rainfall. The monsoon season, which typically runs from June to September, is crucial for the agricultural economy of the region, but it also poses risks of flooding and landslides, particularly in vulnerable areas.

The weather office has issued a Red Alert for Assam and Meghalaya on Saturday, warning of extremely heavy rainfall accompanied by thunderstorms, lightning, and squally winds. A Red Alert indicates that the weather conditions pose a serious threat to life and property, necessitating immediate precautions from residents. Following this, the alert will be downgraded to an Orange Alert on Sunday, when very heavy rainfall, thunderstorms, lightning, and squally winds are expected to continue. This tiered alert system allows residents and local authorities to prepare for varying levels of weather severity.

From July 13 to July 17, the IMD has issued a Yellow Alert, forecasting heavy rainfall across the region. Thunderstorms, lightning, and squally winds are likely to persist until July 15, while heavy rain is expected to continue on July 16 and 17. The Yellow Alert indicates a level of caution, advising residents to be prepared for the possibility of adverse weather conditions.

The IMD attributed the prolonged spell of wet weather to a combination of active monsoon systems, including the monsoon trough, upper-air cyclonic circulations over Assam and adjoining areas, and a strong moisture incursion from the Bay of Bengal. The monsoon trough is a significant feature that influences rainfall distribution, and its active state can lead to concentrated rainfall in certain areas. The Bay of Bengal is known for its warm waters, which can enhance moisture levels in the air, contributing to the intensity of rainfall.

These conditions are expected to bring light to moderate rainfall over many to most parts of Assam, with isolated spells of heavy to very heavy rainfall during the week. For Saturday, the weather department has specifically warned of heavy to very heavy rainfall (7-20 cm) at isolated places in West Karbi Anglong and Morigaon districts. These districts, like many others in Assam, are prone to flooding, especially during the monsoon season, due to their geographical features and the nature of their soil, which can quickly become saturated.

In a separate impact-based forecast for Guwahati and its adjoining areas, the IMD said thunderstorms and lightning accompanied by a few spells of moderate rain and isolated heavy rainfall are likely until 8:30 am on July 12. Guwahati, the largest city in Assam, serves as a major economic and cultural hub of the region, making the impact of adverse weather conditions particularly concerning for both residents and local authorities.

"Thunderstorm and lightning with a few spells of moderate rainfall with isolated occurrence of heavy rainfall (7-12 cm rainfall in 24 hours) is very likely," the IMD said. This forecast underscores the need for residents to remain vigilant and prepared for sudden changes in weather conditions that could disrupt daily life.

The weather office has advised people to closely monitor weather updates, follow traffic advisories, and avoid travelling through areas vulnerable to waterlogging, flash floods, and landslides. This is critical advice, as many parts of Assam are characterized by hilly terrain and riverine landscapes, which can lead to rapid changes in water levels and increased risk of landslides during heavy rainfall.

It warned that the prolonged rainfall could trigger waterlogging in low-lying areas and underpasses, disrupt road traffic, reduce visibility, and temporarily affect power supply and municipal services. Ferry and boat operations may also be impacted, while landslides, landslips, and mudslides remain a possibility in vulnerable locations. The interconnected nature of Assam's geography means that heavy rainfall in one area can have cascading effects on transportation and infrastructure in surrounding regions.

Daily commuters and long-distance travellers are requested to plan their routines accordingly, avoiding unnecessary movement during periods of intense rainfall. This includes considering alternative routes and modes of transport, as well as being prepared for potential delays or cancellations. Residents in low-lying and hillside areas were also urged to stay alert for any signs of flooding or landslides, which can occur with little warning.

"In view of the situation, Assam State Disaster Management Authority requests all people of Guwahati city to take all necessary precautions and remain vigilant," a release stated. The role of the Assam State Disaster Management Authority is crucial during such weather events, as they coordinate responses to emergencies and provide guidance to the public on safety measures.

The latest forecast comes as several parts of Assam continue to remain vulnerable to floods and landslides during the ongoing monsoon season, with authorities closely monitoring the evolving weather situation. The historical context of Assam's monsoon seasons highlights the challenges faced by the state, where rainfall can lead to significant disruptions in daily life, agricultural activities, and infrastructure. The government and local agencies are often involved in disaster preparedness and response efforts, which include evacuating residents from high-risk areas and providing relief to those affected by floods.

In conclusion, while the monsoon season is essential for replenishing water resources and supporting agriculture in Assam, it also brings with it the risks of extreme weather events. The IMD's forecasts and alerts serve as vital tools for informing the public and enabling proactive measures to mitigate the impacts of heavy rainfall. As the situation develops, it will be important for residents to heed warnings and stay informed through official channels, ensuring their safety and the safety of their communities.