Seamless precipitation forecast - 5 minute exceedance probabilities over the netherlands up to 6 hours ahead

PILOT: Seamless ensemble precipitation forecast probabilities up to 6 hours ahead, per 5 minutes, over the Netherlands. The forecast contains 72 time steps: +5 minutes to +360 minutes. Forecasted is the exceedance probabilities of 6 precipitation thresholds, on a grid of 1x1 km. The precipitation thresholds are 0.1, 0.3, 1, 3, 10, and 30 mm/h. The forecast is made with an experimental KNMI implementation of pySTEPS (https://pysteps.github.io). The forecast is initiated with the KNMI 5-minute real-time precipitation accumulation product (RTCOR-5m) and the HARMONIE-AROME Cy43 ensemble forecast.

NOTE: As this data product is currently in a pilot phase, please be aware that it may undergo changes or be discontinued at any time without prior notice. This pilot will last until January 31st 2026 at the latest.

The KNMI real-time precipitation accumulation product can be found here: https://dataplatform.knmi.nl/dataset/nl-rdr-data-rtcor-5m-1-0