NEW DELHI, Aug. 8 -- Several weather stations in the west coast, including the Konkan region; parts of coastal and south interior Karnataka; the Nilgiris in Tamil Nadu (TN), have received extremely heavy rainfall, measuring over 20 centimetres (20 cm), in less than 24 hours, triggering landslides, urban flooding and the large-scale destruction of crops and properties since Monday (August 3).

Monsoon entered an active to vigorous phase over the west coast following the formation of a low-pressure area over the Bay of Bengal on Tuesday. The rain recorded in the past three days is unheard of, scientists said, even though they are yet to assess the historical data.

On Monday, Mumbai's Dharavi got 38 cm rain; Santacruz and Colaba recorded 26 a...