What is a DANA (cold drop) and why is it so dangerous
Cut-off low pressure system at high altitudes: how it forms, why it dumps so much rain and where it strikes most often.
Read articleAnimated wind, temperature, pressure, waves, clouds and more. 12 layers with a 10-day forecast and model comparison: GFS, ICON, ECMWF.
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Estimate flow in channels and rivers using Manning's formula. Velocity, area, slope and roughness.
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Assessmm/h to L/m2, m3/s to hm3, wind km/h to knots, pressure hPa to mmHg and many more.
ConvertCalculate potential evapotranspiration (Thornthwaite, Penman) and monthly water deficit.
StartArticles to understand cold drops (DANA), reservoirs, weather radar and how to prepare for floods.
Cut-off low pressure system at high altitudes: how it forms, why it dumps so much rain and where it strikes most often.
Read articleThe Automatic Hydrological Information System that tracks reservoirs, gauging stations and river flows across every basin.
Read articleFrom weather radars to your phone: yellow, orange and red warning chains explained step by step.
Read articleHow filling, controlled releases and emergency response plans are managed at every dam.
Read articleWhy every autumn the Mediterranean produces torrential storms and how to anticipate them.
Read articleRibadelago, Tous, the Llobregat surges, the Valencia DANA: catastrophes that reshaped flood prevention.
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