Bengaluru: Heavy overnight rains accompanied by thunderstorms caused widespread waterlogging and traffic congestion in several parts of Bengaluru, with Rainbow Layout, Pioneer Lake Residency, and Anekal among the worst-hit areas, officials said.

Other affected locations included Neeladri Nagar (Electronic City), Indiranagar, HSR Layout, and stretches along the Outer Ring Road, one of the city’s busiest IT corridors, where vehicles struggled to move through knee-deep water.

Karnataka Deputy Chief Minister D K Shivakumar said, “There were rains last night and our officials were alert. No major incidents have been reported. However, there are reports of waterlogging in some parts. Our officials are alert and are on the job.”

A large tree was uprooted in the 3rd Block of Basaveshwaranagar late Friday night, damaging at least two parked vehicles, though no injuries were reported, officials added.

Neighbouring districts, including Kolar, Chikkaballapura, Mysuru, Mandya, and Chamarajnagar, also recorded heavy rainfall overnight.

The India Meteorological Department (IMD) has forecast a generally cloudy sky with moderate rain or thundershowers likely over Bengaluru and surrounding areas. Gusty winds with speeds of 30–40 kmph are expected, with maximum and minimum temperatures hovering around 29°C and 20°C, respectively.

The IMD further predicted light to moderate rain or thundershowers accompanied by lightning and gusty winds (30–40 kmph) at isolated locations in Kolar, Chikkaballapura, Mysuru, Hassan, Tumakuru, Bengaluru Urban, Bengaluru Rural, and Mandya districts.

According to data from the local meteorological centre, HAL Airport recorded 20.7 mm of rainfall with thundershowers between 8.30 am on October 10 and 5.30 am on October 11, while Bengaluru City Observatory registered 67.1 mm.

Other rainfall measurements included Doddaballapura (Bengaluru Rural) 53 mm, Hessarghatta (Bengaluru Rural) 14.5 mm, Chandurayanahalli (Ramanagara) 19.5 mm, Chikkaballapura DHQ 12.5 mm, Hunsur (Mysuru) 8.5 mm, Tamaka (Kolar) 3.2 mm, and Gopal Nagar (Bengaluru Urban) 10 mm.

Smaller amounts were recorded at Hassan 0.5 mm, Mudigere (Chikkamagaluru) 0.5 mm, Hiriyur (Chitradurga) 2 mm, and Gonicoppal (Kodagu) 1.5 mm.