© PTIA swollen Beas river flows after heavy rains in Kullu district, Himachal Pradesh, on September 24, 2018.
Incessant rainfall up to 10 times higher than normal in parts of north India,
heavy snowfall in the upper reaches of the Himalayas, and a delay in the withdrawal of monsoon winds, can be attributed to a combination of strong westerly winds over Gujarat and a deep depression caused by Cyclone Daye over the coast of Odisha, weather experts said on Monday.
Since Friday, north-west India received 454% more rainfall than the normal for this period.The departure was highest for Punjab,
which received 1,193% more rainfall than usual, and lowest for western Rajasthan, which also got 317% more rain than normal.
Weather experts said that rainfall in this part of the country normally occurs when localised depressions caused by summer heat attract moisture laden winds, mostly from the Bay of Bengal. But the rainfall being experienced by the region at the moment is a result of moisture from both the Bay of Bengal to the east and the Arabian Sea to the west.
"The large low pressure area caused by Cyclone Daye, extending to the coast of Gujarat, got 'hooked' with the westerly winds coming from Arabian sea, taking the moisture upwards towards north," said India Meteorological Department (IMD) director general KJ Ramesh.
Comment: Update: ABS- CBN on 26th September reports: