Sometimes, and particulary this evening, I can't download winds. I have this message : Error downloading C:\Users\xxxx\AppData\Local\Temp\tmp192.grb téléchargement interrompu. Can you explain me ? Thanks and sorry for my poor english.
NOAA gribs are added gradually while their super computer spits forecasts. You probably tried to download a fresh forecast, and it was not ready. Try to shorten the number of hours (p.e. 180) when this happens.
it looks like NOAA delivers data above 180hrs only twice a day. I download at 5:00 - 11:00 - 17:00 - 23 :00 GMT and only 11:00 and 23:00 can go above 180hrs.... see this good VRTool wiki for detailled explanations about NOAA : http://www.tecepe.com.br/wiki/index.php?title=NOAAWinds