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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Normal to below normal rainfall is likely during the 2023 southwest monsoon season (June – September) over most parts of the South Asia, according to the WMO-backed South Asian Climate Outlook Forum (SASCOF).
WMO, with support from the National Centre for Hydrology and Meteorology (NCHM) Bhutan and the Regional Integrated Multi-Hazard Early Warning Systems in Asia and Africa (RIMES) has successfully completed the implementation of a project aimed at strengthening the capacity to provide climate services and support climate sensitive sectors in the remote, landlocked mountainous country.
Normal to above normal rainfall is most likely during the 2022 southwest monsoon season (June – September) over most parts of the South Asia, according to an authoritative seasonal forecast from the South Asian Climate Outlook Forum.
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.