The following is a description of the operational release of EFAS v5.2, which was launched on 13 August 2024. For an overview of other EFAS releases, please see: EFAS versioning system

Summary

EFAS v5.2 introduces several minor changes to the system, including:

  • Revised Notification criteria for Formal and Informal notifications: 
    • Optimised criteria for the issue of Formal and Informal notifications are based on a new methodology for the computation of the total probability of exceedance of the 5 yr RP threshold of the grand ensemble encompassing all Numerical Weather Predictions.
    • Improved definition of the area of validity of Formal and Informal notifications.
    • Revised layers in the EFAS Map Viewer: 
    • Improved EFAS notifications email to include a link to a preview feature in the Notifications Archive.
  • Stations metadata have been updated to better align them with the hydrological data collected by EHDCC.
  • Updated flood protection levels layer using new information in EU member states
  • Updated Major Rivers layer derived from 4 different datasets: FAO AQUASTAT, EU hydro, Natural Earth, and GRDC; improved visualisation of river network and river names.
  • Updated documentation on FTP Access

This upgrade of EFAS has no impact on the EFAS modelling results.

Technical details

Pre-release date (available on stage platform)

2024-07-03

Release date

2024-08-13

In test suite

n/a

EFAS internal number

20
Archiving of data

ECFS, MARS, CDS 

Reference climatology (for thresholds/ anomalies)1992-01-01 to 2022-12-31
EFAS Historical1992-01-01 to near present
Reforecasts

tbc

Horizontal projectionEPSG4326
Horizontal resolution0.01667 x 0.01667°
Temporal resolution6-hourly