IMD Forecasts Heavy Rainfall in Some States with Potential Flooding; Check Details

The Indian Meteorological Department has predicted that Kerala, Mahe, Tamil Nadu, and some areas of Northeastern India are likely to face heavy rainfall over the coming week. The weather outlook further warns of the low-pressure system that is likely to develop over Lakshadweep and southeast Arabian Sea, which may further develop into a depression in the next several days, thus affecting the local weather also.

Weather System Developments

A cyclonic circulation over south Kerala has moved into Lakshadweep and adjoining southeast Arabian Sea, extending up to middle tropospheric levels. The circulation is likely to develop into a low-pressure area around October 9, which may gradually strengthen as it moves northwest. It is likely that this development will spread intensifying showers with increased intensity over south peninsular India.

Heavy Rainfall Alerts in South Peninsular India

IMD predicts widespread light to moderate rains over Lakshadweep, Kerala, Mahe, Tamil Nadu, Puducherry, Coastal and South Interior Karnataka. Apart from this:

Heavy to very heavy rain likely in Kerala and Mahe on October 8; sustained heavy rain likely in the rest of the week.
Lakshadweep: Heavy to very heavy rain likely on October 8; Heavy rain likely on October 9.
Tamil Nadu, Puducherry & Karaikal: Isolated heavy rainfall is likely to occur throughout the week.
Karnataka: South Interior Karnataka: Heavy rain is most likely on 8th October and 11th October. Heavy rain likely on October 8 and 9 in Coastal Karnataka.

Northeast India: Similar Rainfall Forecast

Scattered to widespread light to moderate rainfall is likely in Northeast India throughout this week with isolated heavy falls during the period over:

Arunachal Pradesh and Assam & Meghalaya: Heavy rain likely during 8th October to 11th October.
Nagaland, Manipur, Mizoram & Tripura: Heavy rainfall likely on 8th and 9th October; Triprura also expect heavy falls on 8th October.

Possible Impacts and Advisory Precautions

With heavy rains expected, localized flood/flash flood/landslide, and road closure/disruption are likely over the affected districts, along with very poor visibility. According to IMD possible impacts and advisory precautions are outlined below:

Flooding and Traffic Disruptions: In urban areas, there may be slight flooding or waterlogging, and increased traffic congestion. Public should check in advance the road and traffic advisories before traveling.
Damage to Structures and Agriculture: There may be slight damage to roads and vulnerable structures and standing crops due to heavy rain. However, the possibility of landslides is strong, particularly in hilly areas.
Safety Advisories: IMD advises to exercise caution in transport, avoid flood-prone areas, and remain indoors in fragile buildings.

Recent Weather Observations

Extremely Heavy Falls: During the last 24 hours until 0830 IST today, extremely heavy falls have occurred in Kerala. Isolated extremely heavy falls have also occurred over Sub-Himalayan West Bengal. Heavy falls have also occurred over some areas of Jharkhand, Arunachal Pradesh, Tamil Nadu, Puducherry, Coastal Karnataka, Bihar.
 

Update on Withdrawal of Southwest Monsoon

The Southwest Monsoon continues in withdrawal, and the withdrawal line is now observed passing through Nautanwa, Sultanpur, Panna, Narmada Puram, Khargone, Nandurbar, Navsari, and extending up to 20°N/70°E. Favourable weather conditions prevail for likely further withdrawal from Gujarat, Madhya Pradesh, and parts of Maharashtra in the next two to three days.

IMD will continue monitoring these conditions and update them as the low-pressure system over the Arabian Sea develops. People are advised to keep in readiness to meet any adverse weather condition that might develop from them in areas under their influence.