Key Points:
- Two active low-pressure systems are impacting eastern and western parts of India as of November 1, 2025
- Well-marked low-pressure area over east-central Arabian Sea moving toward south Gujarat-north Maharashtra coast, expected to weaken within 24 hours
- Second low-pressure area over northern Gangetic West Bengal expected to become less marked within 12 hours
- New low-pressure area likely to form over east-central Bay of Bengal within next 24 hours under cyclonic circulation influence
- Heavy to very heavy rainfall (7-20 cm) recorded in past 24 hours across Sub-Himalayan West Bengal, Sikkim, Arunachal Pradesh, Bihar, and Konkan-Goa, with Bihar’s Baltara recording 17 cm
- Fresh Western Disturbance expected to affect Western Himalayan region from November 3 night, bringing light to moderate rainfall to northwest India from November 4-6
- IMD issues marine warning for fishermen to avoid Arabian Sea (Gujarat-North Konkan coast) and specified Bay of Bengal areas from November 1-6
New Delhi: The India Meteorological Department (IMD) has confirmed that two major low-pressure weather systems are currently active across the country, triggering widespread rainfall warnings and marine advisories for multiple states. According to an official press release issued by IMD at 12:30 PM IST on November 1, 2025, these systems are positioned over the eastern and western regions of India, with the potential to cause significant precipitation across several states over the coming days.
Arabian Sea System Moving Toward Gujarat-Maharashtra Coast
The first weather system, a well-marked low-pressure area, is currently positioned over the east-central and adjoining northeastern Arabian Sea as of 8:30 AM IST on November 1, 2025. This system originated as a depression over the east-central Arabian Sea on October 31 before moving east-northeastward and weakening into its current state. The associated cyclonic circulation extends up to 5.8 kilometers above mean sea level, indicating significant vertical atmospheric development.
According to IMD’s forecast, this low-pressure area is likely to continue moving east-northeastward toward the south Gujarat and adjoining north Maharashtra coasts across the northeast Arabian Sea. The system is expected to further weaken into a low-pressure area during the next 24 hours, gradually losing intensity as it approaches the western coastline.
Eastern System Over West Bengal Weakening Rapidly
The second weather system, a low-pressure area, is currently positioned over the northern parts of Gangetic West Bengal and neighboring regions as of 8:30 AM IST on November 1, 2025. This system has had a dynamic evolution, having originated as a well-marked low-pressure area over northwest Jharkhand on October 30 before moving north-northeastward and weakening into a low-pressure area over southwest Bihar and adjoining Jharkhand by the evening of October 31.
The associated cyclonic circulation extends up to 3.1 kilometers above mean sea level. IMD forecasts indicate that this system is likely to move further north-northeastward and become less marked during the next 12 hours, signaling its gradual dissipation.
New Bay of Bengal System Brewing
In addition to the two active systems, IMD has identified an upper air cyclonic circulation lying over the south Myanmar coast and adjoining north Andaman Sea, extending up to middle tropospheric levels. Under the influence of this circulation, a new low-pressure area is likely to form over the east-central Bay of Bengal during the next 24 hours. This developing system could potentially bring additional rainfall to eastern coastal regions and the Andaman and Nicobar Islands in the coming days.
Heavy Rainfall Warnings Issued
Under the influence of these multiple weather systems, IMD has issued heavy rainfall warnings for several states on November 1, 2025. Isolated heavy rainfall is likely over Gujarat State, Konkan and Goa, Madhya Maharashtra, Sub-Himalayan West Bengal and Sikkim, Bihar, and the entire northeastern region, including Arunachal Pradesh, Assam, Meghalaya, Nagaland, Manipur, Mizoram, and Tripura.
The Andaman and Nicobar Islands are also expected to receive heavy rainfall at isolated places on November 1 and 2, 2025, under the influence of the upper air cyclonic circulation over the south Myanmar coast and adjoining north Andaman Sea.
Intense Rainfall Recorded in the Past 24 Hours
During the 24 hours ending at 8:30 AM IST on November 1, 2025, several regions across India experienced heavy to very heavy rainfall ranging from 7 to 20 centimeters at isolated locations. The most affected areas included Sub-Himalayan West Bengal and Sikkim, Arunachal Pradesh, Bihar, and Konkan and Goa.
Bihar witnessed some of the highest rainfall totals, with Baltara in Khagaria district recording 17 centimeters, Sangrampur in Munger district receiving 15 centimeters, and Taibpur in Kishanganj district measuring 13 centimeters. Additionally, heavy rainfall (7-11 cm) was recorded at isolated places over Saurashtra and Kutch, Jharkhand, Assam, and Meghalaya during the same period.
Western Disturbance to Bring Rainfall to Northwest India
A fresh Western Disturbance is expected to influence the Western Himalayan region from the night of November 3, 2025. Under its influence, light to moderate rainfall is forecast across northwest India from November 4 to November 6, 2025. This weather system typically brings precipitation to states in northern India, including Jammu and Kashmir, Himachal Pradesh, Uttarakhand, and Punjab.
The weather forecast for the Delhi-NCR region indicates mainly clear conditions with a possibility of fog during evening hours. This relatively stable weather pattern for the national capital region stands in contrast to the active rainfall conditions prevailing in other parts of the country.
Marine Warning and Agricultural Advisory
In view of the weather systems, IMD has issued a critical marine warning advising fishermen not to venture into the Arabian Sea along the Gujarat and North Konkan coast, as well as specified sea areas of the Bay of Bengal and Andaman Sea from November 1 to November 6, 2025. The rough sea conditions and strong winds associated with the low-pressure systems pose significant risks to fishing and other marine activities.
The Meteorological Department has also issued an important agricultural advisory for farmers in the affected regions. Farmers in areas such as Bihar, Gujarat, and Konkan have been advised to store their harvested crops in safe, protected places to prevent damage from heavy rainfall. Additionally, they have been instructed to ensure proper drainage of excess water from agricultural fields to prevent waterlogging, which can damage standing crops and affect soil quality.
Broader Weather Context
The current weather situation is linked to the remnants of Cyclone Montha, which weakened over South Chhattisgarh and Vidarbha before moving north-northwest. Although the cyclonic storm has significantly weakened, its residual low-pressure system continues to influence weather patterns across central and eastern India. A northeast-southwest-oriented trough axis connects the centers of the two main systems, sustaining weather activity over a larger area than normally expected and prolonging the weather conditions.
Broad clearance over most affected areas is expected from November 3 onward, as the low-pressure systems continue to weaken and move away from their current positions. However, residents and authorities in the warned regions should remain vigilant and monitor official IMD updates for any changes in the forecast or additional warnings.
