Forecast the storm before it floods.
RA-FEWS turns DWD ICON-EPS ensembles, IMERG precipitation, and your watch zones into early warnings you can act on, with full transparency on the science behind every number and on how well our own forecasts perform.
From forecast to warning
Four steps, run every forecast cycle.
STEP 1
Ingest the ensemble
Every cycle we pull the 40-member DWD ICON-EPS ensemble and IMERG observed rainfall.
STEP 2
Forecast your catchments
Rainfall becomes discharge forecasts for the catchments and gauges you choose, both deterministic and probabilistic.
STEP 3
Check your thresholds
Each forecast is compared to your warning thresholds, giving exceedance probabilities: how likely, how early.
STEP 4
Act on the warning
Per-zone alerts by email, push and SMS, with the science behind every number one click away.
What you get
Designed for civil-defense officers, water utilities, and hydrologists.
Ensemble forecasts
40-member ICON-EPS ensemble with probabilistic bands, not just the deterministic line.
Custom watch zones
Draw catchments, gauges, or service areas. Receive per-zone thresholds and alerts.
Verification metrics
Bias, RMSE, CRPS, Brier: see how the forecast performed on the events you care about.
Multi-model
ICON, ICON-EPS, IMERG side-by-side. Compare deterministic and probabilistic guidance.
Explainable
Every metric carries a tiered explanation: a tooltip, a side panel, and a full methodology page.
Download your data
Export the forecast hydrographs and the underlying data for your own analysis, reports, or records.
Interactive GIS map
Pan, zoom and inspect every layer on one live map: precipitation overlays, catchments, watch zones and gauge markers, all in a full GIS environment.
The warning gets louder
Days out, the ensemble spreads wide. As the event nears, the members converge and exceedance probabilities climb, so each forecast cycle gives a clearer, more confident signal.
Try it on one of your catchments.
Free tier covers 48-hour forecasts. No credit card required.