The currently active monsoon conditions would help the seasonal rains to cover the entire country over the next two-three days, according to the India Met Department (IMD).
Normally, the monsoon checks into the extreme western and north-western borders in Gujarat and Rajasthan by July 15.
Monsoon advances
The IMD said on Thursday that the monsoon advanced into some more parts of Gujarat region; most parts of East Rajasthan; some parts of West Rajasthan; entire Haryana, Chandigarh and Delhi; and remaining parts of West Uttar Pradesh, Uttarakhand, Himachal Pradesh and Punjab.
Overnight heavy to very heavy rain with extremely heavy rain was reported over South Interior Karnataka while it was heavy to very heavy over Kerala, Coastal Andhra Pradesh, and Odisha And heavy rain over Himachal Pradesh, Haryana, West Madhya Pradesh, Coastal Karnataka and Telangana.
Fresh wave likely
An extended outlook valid from July 3 to 5 said that widespread rainfall with isolated heavy falls is likely over North-East India and along northern parts of the West Coast.
Isolated to scattered rainfall activity is likely over North-West, West, Central and South India while it will be scattered to fairly widespread rainfall over East India.
Rains may start revive yet again from the Bay of Bengal side with a fresh cyclonic circulation popping over the North-West Bay close to Odisha-Bengal coast.
The existing cyclonic circulation over Coastal Odisha has since moved into Chhattisgarh, and is anchoring the ongoing spell over East India.
Earlier on Thursday, the monsoon continued to pour it down over North-West India with the IMD expressing the hope that it would good progress during the next two days as well.
In the process, it shrugged off the intervening lag phases which had led it into a stall twice along the West Coast during the onset phase.
Entry into Haryana, Chandigarh and Delhi gives it the right platform for it to make a final lunge to run over extreme western Rajasthan and Gujarat.
Rains over East Coast
The presence of a western disturbance over Jammu & Kashmir and Himachal Pradesh is reassuring, since it sets up the prospects of interaction between the westerlies and monsoon easterlies.
The interaction has often been a known source for generating heavy precipitation given that the easterlies from the Bay of Bengal would carry oodles of moisture.
And the path for incoming moisture has been made clear by the formation of a trough connecting South-West Rajasthan to East-Central Bay, featuring a helpful circulation over Chhattisgarh.
This land-based trough (as against the offshore trough on the West Coast) cuts across Madhya Pradesh, Chhattisgarh and Odisha, indicating areas of focused monsoon activity.
More rains
The rain outlook for Thursday and Friday was self-explanatory: Heavy to very heavy rain at a few places with extremely heavy rain at isolated places on Thursday over Coastal and South Interior Karnataka; heavy rain at a few places with very heavy rain at isolated places very likely over Kerala.
It would be heavy to very heavy rain over Punjab, Himachal Pradesh, Jammu & Kashmir, East Rajasthan, West Madhya Pradesh, South Konkan, Goa, Vidarbha, Chhattisgarh, Coastal Andhra Pradesh, Telangana and North Interior Karnataka.
Heavy rain at isolated places over North-East India Odisha, Haryana, Chandigarh, Delhi, West Uttar Pradesh, Uttarakhand, West Rajasthan, North Gujarat region and Madhya Maharashtra.