The IMD has warned of extremely heavy rain in Odisha, Andhra Pradesh and Telangana on September 23.
A deep depression over the Bay of Bengal is causing the alert.
It is expected to cross the coast near Kalingapatnam by Wednesday night.
Chhattisgarh is under a very heavy rainfall warning.
Fishermen have been advised to avoid the sea.
Local administrations in low-lying and drainage-prone areas were asked to stay alert.
The system follows an earlier spell of heavy rain over the same region on September 21-22, as the depression intensified over the Bay of Bengal.
Bengaluru was separately forecast to see thunderstorms with lightning and gusty winds of around 30-40 kmph.
Delhi-NCR was not under any rainfall warning for September 23.
The India Meteorological Department is the government’s nodal agency for weather forecasting and warnings.
Deep depressions of this kind are common over the Bay of Bengal during the post-monsoon and late monsoon period in September and October.
The IMD tracks such systems using satellite imagery, weather radar and a network of surface observation stations.
State disaster management authorities typically coordinate evacuation and relief measures in areas expecting extremely heavy rainfall.
Rivers and low-lying areas near the coast are especially monitored for flooding during such weather events.
The IMD updates its forecasts and warnings multiple times a day as a weather system evolves.
Agricultural authorities in affected states often issue separate advisories to farmers ahead of heavy rainfall events.
The India Meteorological Department issued extremely heavy rainfall warnings for Odisha, Andhra Pradesh and Telangana on September 23, 2026.
Chhattisgarh was placed under a very heavy rainfall warning, one level below extreme.
The warnings are linked to a deep depression over the west-central and adjoining northwest Bay of Bengal.
The IMD said the system is expected to cross the north Andhra Pradesh-south Odisha coast between Visakhapatnam and Gopalpur, close to Kalingapatnam, by Wednesday night.
Bay of Bengal weather system (representative satellite image), Wikimedia Commons, public domain
