On Thursday morning the depression over the South-East Arabian Sea had weakened into a well-marked low-pressure area during the evening time and it spread over Lakshadweep where it would undergo further weakening. Due to which yesterday 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. It was also raining at some parts of Mumbai.
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 pressure 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. 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.