The India Meteorological Department has forecast heavy rain and thunderstorms in Bengaluru through Thursday evening and night, with several parts of southern India likely to experience rainfall over the weekend. The sudden change in weather could lead to traffic congestion, waterlogging and temporary power outages.

According to the IMD, moderate rain accompanied by thunderstorms and gusty winds of 30-40 kmph is expected in Bengaluru over the next three hours. 

The IMD has issued a yellow alert for Chamarajanagar, Mandya, Ramanagara, Bengaluru Urban, Chikkaballapur, Kolar and Bengaluru Rural for Thursday evening. For October 16, an orange alert has been issued for Kodagu and Chikkamagaluru districts.

Meanwhile, the Regional Meteorological Centre has said that the northeast monsoon may begin over the southern peninsula from Thursday. Chennai experienced intermittent showers and cloudy skies on Wednesday.

The southwest monsoon is also expected to withdraw completely from the country on Thursday. Meanwhile, a Western Disturbance is active over northern India, bringing unsettled weather, while deep convective activity associated with the northeast monsoon is developing over the southern peninsula.

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In Delhi, rain swept across the capital on Thursday, leaving the skies gloomy and overcast throughout the day. The IMD issued a red alert, forecasting moderate rainfall, thunderstorms, lightning and gusty winds.

IMD has predicted moderate rain at several places across Delhi, accompanied by thunderstorms, lightning and winds of 30-40 kmph, with gusts reaching up to 50 kmph.