Deprecation notice for QRF-RT-SSh-v2021

As of 01-03-2025, the dataset QRF-RT-SSh-v2021 has been deprecated and will no longer receive updates.

This decision is due to the phase-out of the input from the numerical weather prediction model Harmonie-Arome (HA) Cy40. A new version of the dataset, based on the updated HA version Cy43, has been released.

Improvements in version 2025 compared to version 2021:

  • Change of the maximum precipitation in an area: it now becomes maximum precipitation in a 3x3 km grid cell within a rolling 9x9 km area (was a fixed 7.5x7.5 km area in v2021).
  • The Minimum Divergence version of the Schaake Shuffle(1) (which will replace the standard Schaake Shuffle used in v2021) will be used for statistical ensemble member generation.
  • Unlike the previous version, the new version is planned to be available throughout the entire year
  • Hourly forecasts are issued 8 (was 4 in v2021) times per day (based on the HA runs of 00, 03, 06, 09, 12, 15, 18 and 21 UTC) for 60 hours (was 48 hours in v2021) into the future.
  1. Scheuerer, M., T. M. Hamill, B. Whitin, M. He, and A. Henkel (2017), A method for preferential selection of dates in the Schaake shuffle approach to constructing spatiotemporal forecast fields of temperature and precipitation, Water Resour. Res., 53, 3029–3046, doi:10.1002/2016WR020133.

  • Dataset that has been deprecated: Ensemble precipitation forecasts made with Quantile Regression Forests and deterministic Harmonie-Arome inputs
  • Deprecation date: 01-03-2025
  • Sunset date: 01-03-2025
  • Alternative version: https://dataplatform.knmi.nl/dataset/qrf-rt-ssh-v2025
  • New endpoint: open-data/v1/datasets/QRF-RT-SSh/versions/v2025/files

    • For more details about the deprecation of datasets and features, please visit our deprecation policy.

    Navigation