ECMWF data becomes free for use

Quantum
Advanced Member Topic Starter

01 October 2025 14:48:10

So this would be the first winter we have to look forward to 4x ECM runs per day!

https://www.ecmwf.int/en/about/media-centre/news/2025/ecmwf-makes-its-entire-real-time-catalogue-open-all

25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

+2

Brian Gaze
Administration

01 October 2025 15:11:10

#2

Thanks for that. Most parameters were already available via Open Data. What's not entirely clear (to me) from that press release is whether the Open Data feeds will automatically start appearing earlier or if you have to access the gribs via a different channel. If it's the former then charts will start appearing earlier by default. I'll look out later today.

https://www.theweatheroutlook.com/twodata/ecmhr.aspx

Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

Quantum
Advanced Member Topic Starter

01 October 2025 15:40:30

#3

Thanks for that. Most parameters were already available via Open Data. What's not entirely clear (to me) from that press release is whether the Open Data feeds will automatically start appearing earlier or if you have to access the gribs via a different channel. If it's the former then charts will start appearing earlier by default. I'll look out later today.

https://www.theweatheroutlook.com/twodata/ecmhr.aspx

Originally Posted by: Brian Gaze

Surely a different channel would make sense now there is presumably alot more data? I'm guessing the 6Z is no longer truncated?

25/26 (850hpa temp) 11 days snow/sleet falling

18/11 (-4) 19/11 (-6) 20/11 (-6) 01/01 (-7) 04/01 (-10) 10/01 (-7) 11/01 (-3) 30/01 (-1) 13/02 (-6) 15/02 (-4) 18/02 (-6)

24/25 10d

18/11 (-6) 19/11 (-6) 23/11 (-2) 22/12 (-5) 04/01 (-5) 05/01 (0)14/02 (0) 15/02 (0)12/03 (-6) 13/03 (-6)

23/24 8d

29/11 (-6) 30/11 (-6) 02/12 (-5) 03/12 (-5) 04/12 (-3) 16/01 (-3) 18/01 (-8)08/02 (-5)

22/23 7d

18/12 (-1)06/03 (-6) 08/03 (-8) 09/03 (-6) 10/03 (-8) 11/03 (-5) 14/03 (-6)

21/22 12d

Brian Gaze
Administration

01 October 2025 15:44:28

#4

Surely a different channel would make sense now there is presumably alot more data? I'm guessing the 6Z is no longer truncated?

Originally Posted by: Quantum

I could be wrong but think the 06Z is truncated regardless. That aside, I've got a support request with them to try and resolve.

Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

Brian Gaze
Administration

07 October 2025 15:39:15

#5

I can now provide some more information on this, which I believe to be accurate, but any mistakes that follow are my own:

1. The ECM 06Z and 18Z runs extend to T+144.

2. Open data will continue to be delayed by one hour but will be made available at a higher resolution - 0.1° rather than 0.25° - from January 2026.

3. Real-time data is made freely available, but charges still apply for data delivery; essentially, you’re paying for bandwidth and the service package.

Brian Gaze

Berkhamsted

TWO Buzz - get the latest news and views

"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

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