Question about GFS Grib
Post by iconPost by Kwasi | 2020-12-26 | 08:27:10

There is two things I don't really understand.
1st: (not so important) In XYGRIB and QtVlm there is no way to download the GFS 16d forecast.
I assume it's downloaded from the same server. Where are the 16d located?
2nd: (very important, especially for short races)
I understand that both - VR and Zezo - update the new forecast files for the next days as soon as they available which is a lot earlier than the complete GFS 10d model on XYGRIB. Where can I get those partial datas for my own routing software to compare?

commenticon 4 Comments
Post by iconPost by Hardtack | 2020-12-26 | 18:06:03
VR and Zezo use the NOAA GFS 1° forecasts. NOAA had 3-hour-forecasts covering the first 10 days and 12-hour forecasts covering 6 more days. Since recently there are 3-hour forecasts all the way. You can find information how to access the forecast data here.
Post by iconPost by jphe | 2021-01-02 | 17:53:02
exactly here
https://nomads.ncep.noaa.gov/cgi-bin/filter_gfs_1p00.pl
Post by iconPost by zezo | 2021-01-03 | 13:58:28
I also copy the downloaded files here:

http://zezo.org/grib/

Both the originals and converted to GRIB v1.

You can also check the update progress there. The file times are in UTC.
Post by iconPost by Sunkist | 2021-02-23 | 16:30:54
Does anyone know from scratch, is the GFS 1° version just the subsampled 0.5° (or even 0.25°) version?
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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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Virtual Regatta API
2
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Compliment
12
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Cap Horn bug
3
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New forecast unavailable
32
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