Radar-based rainfall accumulation probability

Radar-based nowcasts of the probability of rainfall accumulations to exceed different thresholds over different accumulation windows.

Description & Technical Information

Description

Radar-based nowcasts of the probability of exceeding different accumulation thresholds for different accumulation windows (e.g. 1h, 3h, 12h and 24h) generated by the 3 probabilistic nowcasting algorithms of the project (PhaSt, RAVAKE, and SBMcast).

For instance, over Finland, the FMI RAVAKE algorithm operationally produces probability forecasts for the thresholds listed in the table.

Probability of X hour rain accumulation > Y mm
X (h) Y (mm)
1 0.2, 2, 7, 20
3 0.8, 4, 10, 27
12 1.2, 6, 19, 43
24 1.4, 7, 23, 50

Technical information

Category
Coverage Regional
Horizon 15 minutes to 6 hours (up to 5 days using NWP forecasts)
Time Resolution 5-15 minutes
Spatial Resolution 1-2 km
Update 5-15 minutes
Nature Raster Maps
Availability ,

Model or Algorithm