3-day rain forecast from Friday to Monday mornings.

(TWC Met Team)

Saturday, December 10: Cyclonic Storm Mandous wreaked havoc across India’s southeastern coast last night, bombarding the region with up to extremely heavy downpours and stormy winds from late Friday evening to the early hours of Saturday.

The cyclone made landfall close to Tamil Nadu’s Mamallapuram between 11:30 pm and 1:30 am last night, during which it generated howling winds that raged at 65-75 kmph, gusting at 85 kmph — conditions so extreme, they reminded Chennai residents of nature’s unmatched fury and rendered them incapable of falling asleep.

A​ccording to Tamil Nadu chief minister MK Stalin, the cyclone-induced rains claimed the lives of 4 people. The storm also killed 98 cattle, damaged 151 houses and huts and uprooted about 400 trees in Chennai, while also damaging boats in the waters and weak structures on the land.

A​s for the precipitation, in the 24-hour period between Friday and Saturday mornings (from and until 8:30 am), Mandous dumped the highest rainfall in the following locations:

Tamil Nadu: 25 cm in Vembakkam from Tiruvannamalai district; 20 cm each in Minnal and Panapakkam from Ranipet district.

R​ayalaseema: 23 cm in Srikalahasti and 22 cm in Thottambedu from Chittoor district; 20 cm in Kodur from YSR district.

C​oastal Andhra Pradesh: 20 cm in Gudur from Spsr Nellore district.

Mandous remnant to re-emerge in the Arabian Sea

Mandous weakened considerably after landfall, de-intensifying from a Cyclonic Storm to a Deep Depression about three hours after crossing the coast. As of Saturday noon, the system continues to move west-southwestwards, and will gradually weaken into a depression by Saturday evening.

From there, the Bay of Bengal system’s westward movement inland will continue until it re-emerges into the Arabian Sea in two days, reports TOI. While it will no longer generate strong winds, its influence will ensure wet weather persists over the country’s southern half.

The India Meteorological Department (IMD) has forecast light to moderate rainfall at most places and heavy to very heavy showers (64.5 mm-204 mm) at isolated locations across Rayalaseema, north Tamil Nadu and south interior Karnataka on Saturday. Accordingly, all these subdivisions will remain on an orange alert (‘be prepared’ for rough weather) for the day.

Coastal Andhra Pradesh, meanwhile, will be in for isolated heavy rains (64.5 mm-115.5 mm) for the next 24 hours.

Come Sunday, isolated heavy rainfall will drench north Tamil Nadu, south interior Karnataka and Kerala. Telangana and Maharashtra may experience wet conditions over the weekend, while the downpours over Kerala will continue next Monday and Tuesday as well.

And finally, once the system re-emerges in the Arabian Sea, it may induce unseasonal rains in Mumbai, Goa and the rest of the western coast at the start of next week.

(A​LSO SEE: The Mandous Chill: Cyclone to Impact Weather Across Megacities Chennai, Bengaluru, Hyderabad and Mumbai)

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