Cloudburst: when the balloon pops , Pg2

Key Highlights:

• A cloudburst is a sudden, intense, and localized rainfall event, distinct from typical monsoon rains.
• The India Meteorological Department (IMD) defines a cloudburst as rainfall exceeding 100 mm in one hour over a 20-30 sq. km area.
• The World Meteorological Organisation (WMO) defines cloudbursts as rainfall at a rate of 100 mm per hour or more.
• Cloudbursts occur when strong updrafts in thunderstorms collapse, releasing large amounts of water suddenly.

Detailed Insights:

• Cloudbursts are short-lived events capable of causing severe damage due to the intensity of the rainfall.
• Orographic lifting, where moist air is forced upwards by mountains, contributes to cloudbursts through rapid condensation.
• The Swedish term 'skyfall', defined as 1 mm per minute or 60 mm per hour for short bursts, is related to cloudbursts.
• Identifying cloudbursts is crucial for predicting and mitigating flash floods and landslides, especially in mountainous regions.

Key Concepts Involved:

• Cloudburst: A localized, intense rainfall event with a high precipitation rate over a short period.
• Orographic Lifting: The process where air is forced upwards by terrain, leading to cooling and condensation.
• Flash Flood: A sudden, localized flooding event, often caused by intense rainfall like cloudbursts.