Post by iconPost by happysailing | 2016-12-13 | 19:42:03

not sure but I am still at the GFS 12Z wind forecast while we are past 6:30 pm (UTC + 1 here in Switzerland). I had the GFS 6Z forecast until 5 PM, then it switched to GFS 12Z right at 5 pm. It look like that the forecast is delayed by 6 hours, as a result wind forecast is different than on the VR chart.
am i doing something wrong?
thank you
great tool by the way

commenticon 8 Comments
Post by iconPost by zezo | 2016-12-13 | 20:44:32
The 12Z forecast is started at 12Z and becomes available at 16Z, so that's expected.

About the differences - it's unclear when and how exactly VR switches from one model to the next, so some differences around the update time are not unexpected. If sailing at optimum downwind/upwind TWA you should stick with the game interface.
Post by iconPost by happysailing | 2016-12-13 | 21:05:38
thanks man!
Post by iconPost by zezo | 2016-12-14 | 01:35:03
The bad news is that I just checked my in-game from the point of view of another boat and there is half knot difference in wind speed. Which meeans that the game engine uses different weather data than the user interface.

You can actually do the same test by clicking another boat and comparing the wind speed at the cursor and in the info panel. The actual difference will depend on the difference between the forecasts/GFS model used/interpolation details.
Post by iconPost by petole | 2016-12-14 | 09:22:28
I agree. VR does not respect its own rules....
Post by iconPost by falcon49 | 2016-12-14 | 11:00:41
This morning, the forecast from VR and ZEZO seems very different Have you an explanation
Thanks for help
Post by iconPost by baki38 | 2016-12-14 | 20:38:01
Hello at 19h30 the Wind is very different from Vr and ZEZO, VR 16.6 and ZEZO 35.

my position is around 171 04 00/ 51 20 16
Thank you
Post by iconPost by zezo | 2016-12-14 | 20:49:03
I think you are looking at latitude 171E vs. 171W
Post by iconPost by Inicio | 2016-12-18 | 17:41:17
Not wind at all for 16:40 +72HH
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Fleet section mode record not working
2
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Possible routes on the Map tab
3
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Purple skippers on VR Dashboard
3
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UTC or CET time ?
2
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multiple routes?
2
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Real Sail
4
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Map a little gloomy
8
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Trophée Jules Verne - Route à l'envers ?
2
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Looks like weather updates offline for next 18h
26
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Bring the good old days back
7
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All.grib 0.0k ?
9
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different speed
3
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Strange 0.5 mille VR Scale
3
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Just an idea for a new feature...
7
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Connexion impossible
1
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Donations
7
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New leader - seems to be using Zezo
38
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Bravo Zezo
4
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zezo : Huge job - Huge thx
2
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Difference between boat speed display on VR, dashboard and polar curves
7
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Vendée Globe: Track lines falling too short of ischrones
8
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Tara Ocean
29
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VR winds currently not up to date ?
1
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"Sails Change" within the Programming
3
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RORC Transat finish moved to Antigua
3
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Weather update not appearing...
19
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Dashboard not updating.
6
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Boats Skins Vendée Globe
3
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Safari on iOS: Bearing lines gone
3
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Wrong coordinates in zezo
2
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Winds in the chart do not show changes between 78 hours and 114 hours forecast
2
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Decoding of All grib
6
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I CANNOT ENTER FOR 3 HOURS IN THE GAME
23
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Why the vc data is yellow underlined ?
3
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Jules Verne 2020 - "Start NOW" discrepancy VS real time
7
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Would like to know the reasenable time to update your pisition on zezo
16
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Arrival Vendée Globe in Normandy !!?
4
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MIssing the Obvious: How to get Zezo routes back into VR
2
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VG 2020-01-02 has Zezo a problem with geographic or ...
8
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How to retrieve a waypoint (TWA/HDG) that already passed...
16
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Track duration window
3
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Ways to bypass the client to give orders?
6
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Problem to Load zero route in windy.com
40
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French tutorial for zezo
4
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boat positioning
2
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Export routes in GPX format ?
4
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Sail selection issue ?
11
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Your friends boats in Google Earth
2
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Delay in Wind update ?N
1
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VR Dashboard
54
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Colone Tile red
3
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Destination setting - Fixer la destination
2
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Anyone else experiencing erratic course changing behavior?
9
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Looks like game winds not updating.
6
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difference between wind on he map and wind on the route
8
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Cape Horn route is not possible it is crossing land
6
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Lost the lines..
2
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all.grb question
3
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2 routings ?
1
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What point or line is being used to determine the rankings?
61
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180 degree bug and downwind track
11
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démarrer avec zezo au milieu de la course
2
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Local times in the charts
1
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red and green lines ahead of isochrones
13
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20 Minute tack
6
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nemo point challenge problem
8
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Nemo Point Challenge
51
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Point Nemoers
1
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Route doesn't give prediction over 24h anymore
7
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Iterations on server & Zezo
5
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Sidney-Hobart 2020
3
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To day zezo don’t give me any route
6
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Fatal Grib error tonight ?
2
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predicted times JV
3
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Loick Peyron uses zezo, the best virtual sailing router ;)
9
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Orthodromy vs loxodromy around the poles
6
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Strange 1st dot heading
3
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Campbell Island
4
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VR bugs and rants
11
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Cap constant, ou angle au vent ? Constant heading, or wind angle?
18
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Colors of wind in the chart
4
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