New Delhi, September 11, 2025 – The India Meteorological Department (IMD) has issued a comprehensive weather bulletin highlighting enhanced rainfall activity across several parts of the country, driven by active monsoon systems. As of today, isolated heavy to very heavy rainfall is anticipated in northeast and adjoining east India, with a heavy rainfall spell likely over Peninsular India during the next 4-5 days. Additionally, increasing rainfall activity is expected over Maharashtra from September 12 to 14, 2025. This comes amid reports of significant precipitation in the past 24 hours, underscoring the ongoing influence of the southwest monsoon.
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Realized Weather in the Past 24 Hours
In the 24 hours ending at 0830 hours IST on September 11, 2025, very heavy rainfall (ranging from 12-20 cm) was recorded at isolated places over Bihar, Madhya Maharashtra, Marathawada, North Interior Karnataka, and Tamil Nadu. Heavy rainfall (7-11 cm) was also noted at isolated locations in East Uttar Pradesh, Assam & Meghalaya, Mizoram, Chhattisgarh, Sub-Himalayan West Bengal & Sikkim, South Interior Karnataka, Telangana, Coastal Andhra Pradesh, and Rayalaseema. These observations reflect the active weather patterns persisting across eastern, central, and southern India.
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Prevailing Weather Systems
The IMD attributes the current and forecasted weather to several key atmospheric systems. The western end of the monsoon trough at mean sea level is running slightly north of its normal position, while the eastern end is near its normal position. A depression over the northeast Arabian Sea and adjoining south Pakistan has moved nearly westwards and weakened into a well-marked low-pressure area over the northwest Arabian Sea and adjoining southwest Pakistan as of 0530 hours IST today. It remained over the same region at 0830 hours IST on September 11, 2025, and is very likely to continue moving nearly westwards, gradually weakening into a low-pressure area over the same region during the next 12 hours.
Additionally, an upper air cyclonic circulation is present over South Odisha adjoining north Coastal Andhra Pradesh in the lower and middle tropospheric levels, tilting southwards with height. Another upper air cyclonic circulation lies over Sub-Himalayan West Bengal & Sikkim, and a third over central Assam, both in the lower tropospheric levels. A trough extends from Sub-Himalayan West Bengal & Sikkim to the west central Bay of Bengal in the lower tropospheric levels. Furthermore, a western disturbance is manifesting as a cyclonic circulation over Himachal Pradesh and its neighborhood in the middle tropospheric levels.
These systems are collectively influencing the weather patterns, leading to enhanced moisture incursion and convective activity across the subcontinent.
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Forecast and Warnings Under the Influence of These Systems
The IMD has outlined region-specific forecasts, emphasizing the likelihood of light to moderate rainfall accompanied by thunderstorms, with isolated heavy to very heavy falls in several areas. Residents in affected regions are advised to stay alert for potential flooding, landslides, and disruptions to daily life.
Northeast India
Light to moderate rain or thunderstorms are expected at most or many places, with isolated heavy rainfall likely over Arunachal Pradesh, Assam & Meghalaya from September 11 to 17, and over Nagaland, Manipur, Mizoram & Tripura from September 11 to 16. Very heavy falls are anticipated over Nagaland, Manipur, Mizoram & Tripura during September 12-15; Arunachal Pradesh on September 13 and 14; and Assam & Meghalaya during September 13-15.
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East & Central India
Light to moderate rain or thunderstorms are forecast at many or some places, with isolated heavy rainfall likely over the Andaman Islands on September 11; Odisha on September 11 and 12; Chhattisgarh during September 11-13; Sub-Himalayan West Bengal & Sikkim during September 11-17; Bihar during September 11-15; Jharkhand on September 11, 15, and 16; Vidarbha during September 12-14; Nicobar Islands on September 13; East Madhya Pradesh on September 14 and 15; and West Madhya Pradesh during September 15-17. Isolated very heavy falls are expected over Bihar on September 11 and Sub-Himalayan West Bengal & Sikkim on September 13.
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West India
Light to moderate rain or thunderstorms are anticipated at some or isolated places, with isolated heavy rainfall likely over Madhya Maharashtra during September 11-17; Marathawada during September 11-14; Konkan & Goa during September 13-17; and the Gujarat Region during September 14-16. Very heavy falls are forecast over Marathawada on September 12 and 13; and over Konkan & Goa and Madhya Maharashtra on September 13 and 14.
Northwest India
Light to moderate rain or thunderstorms are expected at some or isolated places, with isolated heavy rainfall likely over East Uttar Pradesh on September 11, 15, and 16; West Uttar Pradesh on September 12; Himachal Pradesh on September 13 and 14; and Uttarakhand during September 12-16.
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South Peninsular India
Light to moderate rain or thunderstorms, along with gusty winds (speed 30-40 kmph), are likely at many or some places, with isolated heavy rainfall anticipated over Tamil Nadu on September 11 and 12; Coastal Andhra Pradesh & Yanam, Rayalaseema, and South Interior Karnataka during September 11-13; North Interior Karnataka during September 11-14; and Telangana during September 11-15. Strong surface winds (speed reaching 30-40 kmph) are very likely over Coastal Andhra Pradesh & Yanam and Rayalaseema during the next 5 days.
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Broader Outlook: Enhanced Rainfall in Key Areas
The bulletin specifically highlights enhanced rainfall activity over northeast and adjoining east India, with the possibility of isolated heavy to very heavy rainfall over Bihar on September 11; Sub-Himalayan West Bengal & Sikkim on September 13; Arunachal Pradesh on September 13 and 14; Nagaland & Manipur during September 12-15; and Assam & Meghalaya during September 13-15, 2025.
A heavy rainfall spell is also likely over Peninsular India during the next 4-5 days, aligning with the forecasts for southern states. Furthermore, increasing rainfall activity is expected over Maharashtra from September 12 to 14, 2025, which could exacerbate conditions in already rain-affected areas like Madhya Maharashtra and Marathawada.
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Implications and Advisories
With the monsoon season in full swing, these weather patterns could lead to waterlogging in urban areas, disruptions in transportation, and risks of landslides in hilly regions. Farmers are advised to monitor crop conditions, while coastal communities should prepare for gusty winds. The IMD urges the public to refer to its detailed weather updates for localized warnings and to take necessary precautions.
For more details on realized weather, weather systems, forecasts, and warnings, visit the official IMD website or contact local meteorological offices. As the situation evolves, further updates will be provided to ensure public safety amid these dynamic weather conditions.
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