Chennai has been placed under a red alert as a deep depression, the remnant of Cyclonic Storm Ditwah, over the west-central and bordering southwest Bay of Bengal, near the north Tamil Nadu and south Andhra Pradesh coasts, generates extremely heavy rainfall throughout many Tamil Nadu districts. The India Meteorological Department (IMD) has also issued a red alert for Thiruvallur on Tuesday.
According to the weekly forecast, Chennai and Thiruvallur are predicted to get exceptionally heavy rain, with maximum temperatures around 27 degrees Celsius and low temperatures near 23 degrees Celsius.

The weather system is likely to recurve towards the southwest and is projected to deteriorate into a depression within the next 12 hours. The deep depression's center is at least 35 kilometers away from the beaches of north Tamil Nadu and Puducherry. During the next twelve hours, it is highly likely to deteriorate into a depression and slowly recurve southwestward, according to the IMD.
Over the next few days, Chennai is expected to see erratic weather, with heavy to moderate rains expected throughout the area.
The city will see mostly cloudy skies with a lot of rain on December 3, with daytime highs of about 29 degrees Celsius and nighttime lows of 24 degrees.From December 4 onwards, conditions are anticipated to turn partly cloudy, but a consistent possibility of moderate rain or thunderstorms - often accompanied by lightning - remains. With daytime highs of about 30 degrees Celsius and nighttime lows of 25 to 26 degrees, this pattern is predicted to persist through December 5, 6, and 7.
Chennai schools closed
In view of heavy rains generated by Cyclone Ditwah, schools and institutions in Chennai, Tiruvallur, and Kanchipuram will remain close on December 2 after district authorities declared the precautionary move late on Monday.Due to the current weather alerts, district collectors from the three districts confirmed that all educational institutions would observe a holiday, according to ANI. The shutdown, said university officials, is intended to protect students from the possibility of heavy rain and waterlogging.
Additionally, locals have been advised to exercise caution, refrain from needless travel, and heed warnings from the state government and emergency management organizations.