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The depression over South-East Arabian Sea has weakened into a well-marked low-pressure area on Thursday evening over Lakshadweep where it would undergo further weakening.
During the 24 hours ending on Thursday morning, it brought rains to most places over Coastal Karnataka, Lakshadweep; a few places over Kerala, South interior Karnataka; and at isolated places over Tamil Nadu and North Interior Karnataka.
Rainfall amounts
Amount of rainfall recorded in South Tamil Nadu (in cm): Rameswaram-5; Tirupathur-4; RS Mangalam and Papanasam-3 each; Manamadurai, Sankarankoil, Thenkasi, Mulanur, Kangeyam, and Ayikudi-2 each.
Minicoy in Lakshadweep recorded an exceptionally heavy 17 cm, followed by Amini in the neighbourhood at 6 cm. In Kerala, the Kozhikode International Airport at Karipur, Quilandy, and Kollengode recorded 2 cm each.
In Karnataka, Karkala recorded 8 cm; Bantwal-5 cm; Dharmasthala-3 cm; Mani, Kundapur, Karwar and Kammaradi-2 cm each.
The well-marked ‘low’ is still capable of generating rain or thundershowers at most places over Kerala and Lakshadweep until Friday with possibility isolated heavy falls. A similar forecast is valid for many places Coastal Karnataka and South Tamil Nadu.
More rain seen
Squally winds speed reaching 35-45 km/hr and gusting to 55 km/hr are more likely over Lakshadweep and adjoining South-East Arabian Sea off South Karnataka and Kerala coasts until Friday morning.
Meanwhile, in North India, weather-making western disturbances have kept with their frequency as they move in from the Jammu & Kashmir, Rajasthan and Gujarat borders, depending on their amplitude.
The ones with deeper amplitudes dip into the North Arabian Sea adjoining Gujarat to emerge with scooped up moisture, which gets dumped over hills of North-West India as rain/snow and over the plains as thundershowers.
Western disturbances
Associated cool Westerly winds have offered respite from the building heat even as farmers wait with bated breath for the cross-over the amply endowed disturbances just in case they triggered thunderstorms or even hail.
Two weak western disturbances are expected to impact North-West India one after the other during the weekend and beyond, but a more intense one is expected to cross in from the Rajasthan border from March 19.
The prevailing disturbance has rolled out a trough to the South reaching down to Vidarbha, which could receive moisture being let off by the well-marked ‘low’ over the East-Central Arabian Sea and fanned into Peninsular India.
This could set off thunderstorms over parts of the South Peninsula and along a narrow corridor to the North where the trough links up with the parent western disturbance.
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