It has been drizzling or raining lightly over parts of the West Coast since morning as a low-pressure area hovered over Gangetic West Bengal.
The Met said the northern limit of the monsoon stayed anchored to the alignment reached two days ago but conditions are favourable for its onward movement towards the West and Northwest.
The monsoon is expected to march into more parts of Madhya Pradesh, the remaining parts of Uttar Pradesh, Haryana, Delhi, and parts of North Rajasthan in the next day or two.
Until 5.30 pm yesterday, rain or thundershowers lashed many parts of Jammu and Kashmir, Himachal Pradesh, coastal Odisha, and a few places over Gangetic West Bengal, Assam and Meghalaya.
Isolated places over Bihar, Konkan, Goa, interior Odisha, Haryana, Delhi and Uttarkahand also recorded rain.
Mumbai received very heavy rainfall of 18 cm until 5 pm, and Delhi, 4 cm.
Mumbai came under the fury of the monsoon flows as it fell in the direct line of sight of the ‘low’ situated almost along the same latitude to the East over Gangetic West Bengal. Thunderstorms are forecast for the rest of the day for the metropolis.
Heat wave
Meanwhile, a heat wave prevailed over North Madhya Pradesh, Vidarbha and coastal Andhra Pradesh, the Met update said.
Maximum temperatures may not undergo significant change over Central and adjoining Northwest India for the next couple of days.
The heavy rains expected over the next three days will be concentrated over East India and the hilly reaches of Northwest India.
The West Coast is likely to witness a spurt in rainfall over the next couple of days due largely to the influence of monsoon flows directed into a developing system in the Northwest Pacific.