Rain in Bengaluru. File photo.
Bengaluru: The India Meteorological Department has forecast isolated heavy rain over South Interior Karnataka from October 21 to 24, setting out a four-day window in its latest warning for southern India.
The October 20 update also said a low-pressure area was likely to form over the Southwest Bay of Bengal and adjoining Tamil Nadu coast during the following 24 hours. IMD advised people to stay alert, follow official weather updates and take necessary precautions.

South Interior Karnataka heavy rain forecast covers October 21–24
The forecast concerns isolated locations within South Interior Karnataka. The regional update does not provide a district-wise list or a separate Bengaluru city forecast.
It follows the earlier weather outlook covering the preceding days. Read our earlier Bengaluru and South Interior Karnataka weather report.
Rainfall warnings across southern India
IMD said heavy to very heavy rain was likely to continue over Tamil Nadu, Puducherry and Karaikal until October 26.
Isolated heavy rain was also forecast over Kerala and Mahe from October 20 to 26, Lakshadweep from October 22 to 26, and Coastal Andhra Pradesh, Yanam and Rayalaseema on October 20 and 21.
