See the flood before it arrives.
We turn high-resolution rainfall and ensemble forecasts into probabilistic flood intelligence at catchment scale. Even under uncertainty, each warning region gets a clear, faster call, so stakeholders act decisively the moment a flood is imminent.
The warning gap
Forecast everywhere. Warned almost nowhere.
See the gapSee real floods
Reconstructed run by run, verified against what happened.
View case studiesHow it works
The science, methodology & pricing.
ExploreOpen the dashboard
Live forecasts, maps & alerts for your catchments.
Launch appReconstructed evidence
What the pipeline would have surfaced.
We replay real flood events through RA-FEWS, cycle by cycle, and publish the limits alongside the results. These are hindcasts of events that already happened, not warnings we issued at the time.
Taquari River, Brazil · May 2024
144 h
warning already in force at the earliest archived run, peaking at 100% of members crossing the illustrative HQ2 level at Estrela
Swat River, Pakistan · Aug 2022
132 h
warning already in force at the earliest archived run, peaking at 100% of members crossing the illustrative HQ2 level at Amandara
Tana River, Kenya · Nov 2023
72 h
lead time at Garissa, with a watch 108 h out and 97.5% of members crossing the illustrative HQ2 peak
Derna, Libya · Sept 2023
132 h
lead time before the flash flood, at 100% of members crossing the illustrative HQ2 level
Warning measured in days, not minutes.
Every cycle re-runs the whole chain. The alert lands the moment the evidence does, not when someone next looks.
The horizon opens
Five days out, the first ensemble members put water over your threshold.
Members converge
More of the forty agree. The probability climbs, and a watch becomes justified.
Your trigger is crossed
The warning goes out per zone, with the probability attached to it.
The river arrives
By now nobody should be finding out. The work happened days ago.
How early the first signal appears depends on the storm. The horizon runs to 120 hours, and everything inside it is re-checked every cycle.
Try it on one of your catchments.
Free tier covers 48-hour forecasts and one watch zone. No credit card required.