Flash Floods

A cloudburst and heavy rainfall triggered flash floods in Kangra district, Himachal Pradesh, severely affecting Luwai village in Chhota Bhanghal valley.

• About Flash Floods: Sudden and rapid floods occurring within hours of heavy rainfall or intense water accumulation.
• US National Weather Service: Flash floods happen when rainfall causes flooding in less than 6 hours.
• Marked by a swift rise in water levels in rivers, streams, or urban areas with little warning.
• Factors Responsible: Heavy rain is the primary cause → Dam or levee failures → Ice or debris jams → Sudden release of water from glacial lakes or reservoirs.

o In India, flash floods are often linked to cloudbursts (intense rainfall in a short period).

• Influencing factors:Rainfall intensity & duration → Steep terrain & soil nature → Man-made structures impeding water flow.