# \#operational-forecasts
**URL:** https://forum.ecmwf.int/tag/operational-forecasts/138.md
[Latest](https://forum.ecmwf.int/latest.md) · [Categories](https://forum.ecmwf.int/categories.md) · [Tags](https://forum.ecmwf.int/tags.md)
---
## [Optimizing MARS request for historical HRES](https://forum.ecmwf.int/t/optimizing-mars-request-for-historical-hres/14780)
**Author:** [@Manuel\_Davila-Romero](https://forum.ecmwf.int/u/Manuel_Davila-Romero)\
**Replies:** 2\
**Last updated:** [12 March 2026 07:25 UTC](https://forum.ecmwf.int/t/optimizing-mars-request-for-historical-hres/14780 "2026-03-12T07:25:01Z")
Hello, I’m retrieving several years of historical wave forecast data from the operational MARS archive (class=od, type=fc, stream=wave, expver=1). My workflow sends one request per day × run (00/12) × region. Each requ…
---
## [Open Data Transition on 01 October 2025](https://forum.ecmwf.int/t/open-data-transition-on-01-october-2025/14121)
**Author:** [@Michela](https://forum.ecmwf.int/u/Michela)\
**Replies:** 1\
**Last updated:** [6 October 2025 12:27 UTC](https://forum.ecmwf.int/t/open-data-transition-on-01-october-2025/14121 "2025-10-06T12:27:41Z")
We’re now 1 month away from the big moment! So what happens on 01 October 2025? From 00:00 on 01 October 2025, the current restrictions around redistribution will be abolished for all Products in the ECMWF Real-time Ca…
---
## [UEF2025: Registration and abstract submissions NOW OPEN!](https://forum.ecmwf.int/t/uef2025-registration-and-abstract-submissions-now-open/12008)
**Author:** [@Becky\_Hemingway](https://forum.ecmwf.int/u/Becky_Hemingway)\
**Replies:** 0\
**Last updated:** [21 March 2025 09:26 UTC](https://forum.ecmwf.int/t/uef2025-registration-and-abstract-submissions-now-open/12008 "2025-03-21T09:26:09Z")
Join us at Using ECMWF Forecasts (UEF2025) which will be held 15 - 18 September 2025 in Bologna, Italy! An exciting event aimed at ECMWF forecast users to exchange ideas, share experiences, and learn about and discuss t…