Flash floods are among the world’s deadliest natural disasters with more than 5 000 lives lost annually. Their social, economic and environmental impacts are significant. Accounting for approximately 85% of flooding cases, flash floods also have the highest mortality rate among different classes of flooding, including riverine and coastal. Flash floods differ from river floods in their short time scales and occurrence on small spatial scales, which makes flash flood forecasting a different challenge from large-river flood forecasting.
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The World Meteorological Organization and India Meteorological Department (IMD) have held a two-day regional workshop on the proposed Hydrological Status and Outlook System (HydroSOS) in the Ganga Brahmaputra Meghna (GBM) River Basin.
Activities on capacity building and improvements of early warnings of flash floods – one of the deadliest natural hazards, in South Asia region are advancing with the South Asia Flash Flood Guidance System (SAsiaFFGS) Radar Hydrology Training.
Climate change has accentuated natural hazards, including flash floods caused by melting of snow and ice in many regions of the world. The Himalayas, which are the third largest deposit of ice and snow in the world after Antarctica and the Arctic, are heavily impacted. This was highlighted by a disaster in February in Uttarakhand in the Indian Himalayas, after a part of the Nanda Devi glacier broke off and collapsed causing a massive flood in the Rishi Ganga /Dhauliganga river. This destroyed two hydropower plants, burst open dams, and led to a large number of casualties and widespread environmental damage in an ecologically fragile area.
The annual lightning report 2020-2021 contains a mapping of entire lightning strikes over India and all 37 states and union territories along with its impacts and detailed analysis. The report is of extremely high value and it is very useful for disaster management authorities/departments at the National and state level that is NDMA and SDMAs, all the scientific institutions involved in weather and lightning for understanding the hazard, generation of early warning and solutions to lightning, pulmonologists, weather scientists, disaster management professionals, rural and urban development planners, land-use planners, armed forces, communication and IT setups, Industries, Water management authorities especially dams, tourism, Power industries, petrochemical industries, electrical industries, Bureau of Indian Standards, BMTPC, Ministry of the Forest, environment and climate change, department of science and technology, academia, students and researchers.
The World Meteorological Organization (WMO) Regional Association for Asia (RAII) has held a virtual session with a focus on how to improve service delivery, disaster risk reduction, and climate resilience.