<![CDATA[HRRR has wind animations blowing from low to high pressure]]>First off, wonderful website.
But this was a bit crazy...
With HRRR selected the wind appears to be spiraling out from 2 areas of low pressure and converging into a high (on the W side of the screenshot. Similar problem in the far NW part of the domain. The low on the east side on the screenshot off of Southeast Alaska displays the expected behavior. Looking at the Lower 48 I don't see anything out of whack either. No change when selecting different time periods. When I change to any of the other models the wind field shifts, and the animated tracers cross the isobars from high to low as they should.
Screenshot 2023-02-01 140444-reduced.png
Screenshot 2023-02-01 140932.png
I upgraded to latest Firefox but no change.

]]>https://community.windy.com/topic/24010/hrrr-has-wind-animations-blowing-from-low-to-high-pressureRSS for NodeMon, 15 Jun 2026 14:40:46 GMTWed, 01 Feb 2023 23:44:41 GMT60<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Sun, 10 Dec 2023 20:47:15 GMT]]>@Caefix
So don’t add lame explanation just for fun.

]]>https://community.windy.com/post/171391https://community.windy.com/post/171391Sun, 10 Dec 2023 20:47:15 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Sun, 10 Dec 2023 19:19:19 GMT]]>@idefix37 Sorry for the joke. The High near Kamtschatka shows the arrow issue quite good.

]]>https://community.windy.com/post/171390https://community.windy.com/post/171390Sun, 10 Dec 2023 19:19:19 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Sun, 10 Dec 2023 20:46:26 GMT]]>@Caefix
Hey young mate, your explanation is a nonsense. Your screenshots demonstrate nothing. Don’t give hypothetical and crazy explanations when you don’t know the reason of the issue… And this is not the first time.

]]>https://community.windy.com/post/171389https://community.windy.com/post/171389Sun, 10 Dec 2023 20:46:26 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Sun, 10 Dec 2023 18:33:37 GMT]]>📉 Maybe effects of oceanic bold relief?

ModECMWF.png

ModHRRR.png

ModNAM.png

ModUSGS.png

]]>https://community.windy.com/post/171381https://community.windy.com/post/171381Sun, 10 Dec 2023 18:33:37 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Sat, 09 Dec 2023 23:34:27 GMT]]>The same issue remains. Could this be a clue? Both the models with the problem are regional; All the global models are OK.

]]>https://community.windy.com/post/171320https://community.windy.com/post/171320Sat, 09 Dec 2023 23:34:27 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Wed, 10 May 2023 20:23:01 GMT]]>I noticed this is still doing this (wind blows from low to high in regional models and seems to be only in the western part of the domain). Any ideas come up?
cb65e6c4-fef5-4b10-8639-20840b25f0f0-image.png

]]>https://community.windy.com/post/143001https://community.windy.com/post/143001Wed, 10 May 2023 20:23:01 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Mon, 20 Feb 2023 13:32:53 GMT]]>@idefix37
Then I wondered if the HRRR model data was wrong. But it is not, as the NOAA map below shows the correct wind directions around the same Low as that in my previous post. I have symbolized the center of the depression by a circle in the middle of converging winds. They are well entering into the Low.

B935B87D-3E84-4E9B-8C11-D0FE8472A2D3.jpeg

]]>https://community.windy.com/post/134815https://community.windy.com/post/134815Mon, 20 Feb 2023 13:32:53 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Mon, 20 Feb 2023 13:31:11 GMT]]>@Filip_K
It is still wrong. Compare ECMWF and HRRR wind direction around a Low.
The normal way (ECMWF) is the wind entering into the Low area.

F83D2A24-9D2C-4B64-B5A0-C30880515592.jpeg

The wrong way (HRRR) is the wind exiting out of the Low area.

D7CADE59-A8F9-42A4-8AE7-EC474FB1A3E4.jpeg

At first I thought about a possible relationship with the fact that this area is beyond the antimeridian (180°), but it does not seem to be the cause of this anomaly.

Finally I think it is due to a wrong sign, positive or negative, of the u and v vectors component of Wind. Could you check that?

]]>https://community.windy.com/post/134788https://community.windy.com/post/134788Mon, 20 Feb 2023 13:31:11 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Mon, 20 Feb 2023 08:00:14 GMT]]>@jiminak I wasn't able to figure out what is wrong. The source grib data contain the same values we're displaying. I'll have to dig into the projections more

]]>https://community.windy.com/post/134754https://community.windy.com/post/134754Mon, 20 Feb 2023 08:00:14 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Fri, 17 Feb 2023 01:35:25 GMT]]>@Filip_K Any luck with this? It seems to be a problem far west more than far north.

]]>https://community.windy.com/post/134485https://community.windy.com/post/134485Fri, 17 Feb 2023 01:35:25 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Fri, 03 Feb 2023 09:55:09 GMT]]>@jiminak Thanks for letting us know. I can confirm there is something fishy going on and some transformation probably messes up the wind vectors when they are too far to the north.
I'll investigate further

]]>https://community.windy.com/post/132643https://community.windy.com/post/132643Fri, 03 Feb 2023 09:55:09 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Thu, 02 Feb 2023 17:57:53 GMT]]>@idefix37
You are right the NAM is doing it too though not to the extent.
Here's the graphic from NOAA which looks normal.
0b6c314d-4432-4ed6-819a-5687d03a6cda-image.png

]]>https://community.windy.com/post/132584https://community.windy.com/post/132584Thu, 02 Feb 2023 17:57:53 GMT<![CDATA[Reply to HRRR has wind animations blowing from low to high pressure on Thu, 02 Feb 2023 11:04:07 GMT]]>@jiminak

Yes it’s a bit strange. Same behavior with HRRR and NAM in their Alaska domain, while ECMWF and GFS show normal wind directions entering the low pressure center and exiting the high pressure center.

66C69D65-8483-4522-8E73-AA86953AC4FB.jpeg

Over USA territory HRRR and NAM seems to show correct wind directions around Lows and Highs.

]]>https://community.windy.com/post/132536https://community.windy.com/post/132536Thu, 02 Feb 2023 11:04:07 GMT