Chennai Weather: The India Meteorological Department (IMD) has issued a yellow alert for Kancheepuram, Chengalpet and two other districts on November 26 and 27, indicating a return of monsoon activity to north Tamil Nadu. In addition, six coastal districts from Cuddalore to Pudukottai are under an orange alert for heavy to very heavy rainfall during the same period.

Chennai is forecasted to experience early morning mist on Friday, with weather bloggers predicting that the city and Tiruvallur could receive significant rainfall next week. The expected rainfall will be caused by a weather system likely to develop into a low-pressure area over the southeast Bay of Bengal around November 23, which could intensify into a depression over central parts of the south Bay of Bengal in the following days.

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According to the IMD bulletin, on November 22, Chennai and its suburbs may see mist in the early morning, while the sky is expected to be partly cloudy throughout the day. The maximum temperature is anticipated to be around 30 degrees Celsius to 31 degrees Celsius, with a minimum of 25 degrees Celsius to 26 degrees Celsius.

Weather blogger Pradeep John noted that Chennai could experience heavy rain on November 26 and 27, with wet spells also expected in Tiruvallur. He added that the weather system would move northwards from near Sri Lanka, bringing rainfall to all coastal areas of the state.

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Since October 1, Chennai has recorded 55 cm of rainfall, which is normal for this season. However, Chengalpet has seen 33 cm, resulting in a 27 per cent deficit, while Tiruvallur has 38 cm, reflecting a 10 per cent deficit and Kancheepuram has recorded 24 cm, equating to a 38 per cent deficit. Overall, Tamil Nadu has received 33 cm of rain, which is about 6 per cent above normal.