Cyclonic Storm “Montha” [Pronunciation: Mon-Tha] over Southwest & adjoining West Central Bay of Bengal.

The Cyclonic Storm “Montha” [Pronunciation: Mon-Tha] over Southwest & adjoining areas of West Central and Southeast Bay of Bengal moved north-northwestwards with a speed of 18 kmph during past 6 hours and lay centered at 0830 hours IST of today, the 27th October 2025, over Southwest & adjoining West Central Bay of Bengal, near latitude 12.6°N & longitude 85.0°E, about 520 km east-southeast of Chennai (Tamil Nadu), 570 km south-southeast of Kakinada (Andhra Pradesh), 600 km south-southeast of Visakhapatnam (Andhra Pradesh), 750 km south of Gopalpur (Odisha) and 850 km west of Port Blair (Andaman & Nicobar Islands).

It is likely to move north-northwestwards and intensify into a severe cyclonic storm by morning of 28th October. Continuing to move further north-northwestwards, it is very likely to cross Andhra Pradesh coast between Machilipatnam and Kalingapatnam around Kakinada during evening/night of 28th October as a severe cyclonic storm with a maximum sustained wind speed of 90-100 kmph gusting to 110 kmph.

Forecast track and intensity are given in the following table:

Detailed forecast and warning for West Bengal for next seven days are given below: Forecast and Warning for South Bengal:

27.10.2025 (valid till 0830 hours of 28.10.2025): Light rain or thundershower likely to occur at one or two places over North & South 24 Parganas, East & West Midnapore, Kolkata, Howrah, Hooghly and Jhargram districts of South Bengal.

28-10-2025: Light to moderate rain or thundershower very likely to occur at many places over North & South 24 Parganas, East & West Midnapore, Jhargram and Howrah districts; likely to occur at a few places over rest of the districts of South Bengal with Heavy rain (07-11 cm) very likely to occur at one or two places over South 24 Parganas and East Midnapore districts. Also, Thunderstorm with gusty wind (30-40 kmph) and lightning very likely to occur at one or two places over North & South 24 Parganas, East & West Midnapore, Hooghly, Kolkata, Howrah and Jhargram districts of South Bengal.

29-10-2025: Light to moderate rain or thundershower very likely to occur at most places over North & South 24 Parganas, East & West Midnapore, Jhargram districts and at many places over the rest districts of South Bengal with Heavy rain (07-11 cm) very likely to occur at one or two places over North & South 24 Parganas, East & West Midnapore, Jhargram districts. Also, Thunderstorm with gusty wind (30-40 kmph) and lightning very likely to occur at one or two places over all the districts of South Bengal.

30-10-2025: Light to moderate rain or thundershower very likely to occur at most places over all the districts of South Bengal with Heavy rain (07-11 cm) very likely to occur at one or two places over Purulia, East & West Burdwan, Birbhum and Murshidabad districts. Also, Thunderstorm with gusty wind (30-40 kmph) and lightning very likely to occur at one or two places over all the districts of South Bengal.

31-10-2025: Light to moderate rain or thundershower very likely to occur at most places over all the districts of South Bengal with Heavy rain (07-11 cm) very likely to occur at one or two places over Birbhum and Murshidabad districts. Also, Thunderstorm with gusty wind (30-40 kmph) and lightning very likely to occur at one or two places over East & West Burdwan, Nadia, Murshidabad, Birbhum districts of South Bengal.

01-11-2025: Light to moderate rain or thundershower very likely to occur at many places over all the districts of North Bengal.

02-11-2025: Light rain or thundershower likely to occur at one or two places over all the districts of North Bengal.

Possible Impact for North Bengal:

• Water logging in low-lying areas.
• Possibility of landslide in hilly areas of Darjeeling and Kalimpong districts.
• Possibility of lightning strike especially in open field
• Some damages to standing crops in the field.

Actions suggested for North Bengal:

• Avoid movement to areas prone to landslides and water logging.
• Movement of traffic may be regulated judiciously.
• Take shelter in a safe place during intense spell of rain/thundershower.
• Avoid taking shelter under tree/electric pole and avoid contact with water bodies.

Wind warning for Sea area and Sea condition: 

Gale wind speed reaching 70-80 kmph gusting to 90 kmph is prevailing over southwest & adjoining areas of West Central Bay of Bengal. Thereafter, winds would increase becoming 80-90 kmph gusting to 100 kmph over West Central from 27th October evening and would further increase to 90 to 100 kmph from 28th October morning. The squally wind speed reaching adjoining northwest Bay of Bengal 30-40 kmph gusting to 50 kmph is prevailing over adjoining areas of northwest Bay of Bengal and likely to increase becoming gale wind speed reaching 60-70 kmph gusting to 80 kmph over the same region from evening of 28th morning till 29th morning and decrease gradually squally wind speed reaching 35-45 kmph gusting to 55 kmph on 30th October morning.

Sea condition is very likely to be high to very high over West Central northwest Bay of Bengal from 27th October evening, becoming very high from 28th October morning till 29th early hours. Thereafter, it is likely to improve becoming high to very rough by noon of 29th and becoming very rough to rough during subsequent 12 hours. Sea condition likely to be rough in today night and becoming very rough to high on 28^th Evening over northwest Bay of Bengal adjoining to West Central Bay of Bengal.

Squally wind speed reaching 35-45 kmph gusting to 55 kmph very likely to prevail along & off West Bengal coast from 28-10-2025 to 30-10-2025. Sea condition likely to be rough.

Fishermen Warning for West Bengal Coast:

Fishermen are advised not to venture into sea along & off West Bengal coast from 28-10-2025 to 30-10-2025. Fishermen whoever in deep sea are advised to return to the coast immediately.

Team Maverick