Cloudburst analysis in the Nainital district, Himalayan Region, 2021

Some areas of Uttarakhand faced heavy rainfall during 17-19th October 2021. Mainly on 18th October, rainfall hits its all-time high. Due to this, a sudden heavy rainfall occurred, which had affected daily life of humans. More than 50 casualties were recorded during this study period. The main focus of this study was to monitor the Uttarakhand flood event using satellite observations. The Nainital and Almora districts of the state were mainly affected by this sudden heavy rainfall. On 18th October Nainital has received the maximum rainfall of about 21.51 mm at 11:00 am (UTC). The Nainital district has recorded cumulative rainfall of more than 300 mm on 18th October 2021. From the observation, we find out that this heavy rainfall occurred due to the sudden cloud burst at the Ramgarh of Nainital district. This sudden extreme rainfall further caused a flash flood in the study area. The rainfall pattern has moved towards Assam after it caused a flash flood in Nainital district of Uttarakhand, India.