Updated Sep. 23, 2019 3:23 PM
While September usually marks the start of the southwest monsoon withdrawal, downpours will instead expand across nearly the entire country this week.
A monsoon low will slowly track across the northern half of the country this week bringing downpours from Kolkata to Mumbai.
Daily downpours will be focused across West Bengal, Odisha, Andhra Pradesh and Tamil Nadu each day into midweek.
Drier weather will build into southeast India beginning on Thursday causing downpours to become more localized from Tamil Nadu into Andhra Pradesh.
Despite the risk for localized flooding, any rainfall in eastern Tamil Nadu will be largely beneficial as the region continues to endure a significant drought.
Daily downpours will continue farther north across Odisha, West Bengal, Jharkhand and Bihar from Thursday into the weekend elevating the risking for flooding.
The monsoon low will track westward across central India and western India from Wednesday into the weekend expanding the daily downpours. Flooding is possible during this time in Madhya Pradesh, northern Maharashtra, Chhattisgarh, Telangana and Gujarat.
While the heaviest rainfall will remain farther to the south, much of northwest India, including New Delhi will be at risk for scattered showers and thunderstorms from midweek into the weekend.
The widespread coverage of rainfall this week will mean that nearly the entire country will report rainfall at some time, a rare event during late September.
Locations across southeast Pakistan will also be at risk for localized downpours from Thursday into the weekend. This threat includes Karachi.
The risk of flooding and mudslides will be heightened in areas that endured multiple rounds of heavy rainfall last week as a different monsoon low tracked over the region.
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The monsoon low that brought last week's downpours moved into the Arabian Sea and became Severe Cyclonic Storm Hikaa on Monday with winds equal to a tropical storm in the Atlantic Ocean.
A westward track from Hikaa will prevent any further impacts to India as the storm moves toward Oman.
"Dry air will cause Hikaa to weaken before it reaches the southern Arabian Peninsula," said AccuWeather Senior Meteorologist Jason Nicholls.
By the coming weekend, the monsoon low responsible for this week's downpours will move off the shore of Gujarat and Maharashtra. This low will then be monitored for potential tropical development as it moves over the warm waters of the Arabian Sea, taking a track similar to Hikaa.
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