There are always 4 updates a day for new forecast data. The collection of weather data and correlation into a 3-dimensional field starts at the so called “initial times” at UTC 00,06,12 and 18 and needs around 3.5hours. WEPROG starts then its computation of their own weather model. So therefore the deadline for new data effecting the forecast has to be 3h later than the initial time.
So therefore the changes (for example: availability) are included in the forecast if they are given before the deadline.
Example UTC timezone: availability changes are put in at UTC 02, the UTC 00 forecast is uppdated with the new values
initial time for UTC forecast deadline for changes UTC 00 till UTC 03 UTC 06 till UTC 09 UTC 12 till UTC 15 UTC 18 till UTC 21
Example Germany: winter (UTC+1); summer (UTC+2): changes given before UTC 04 will give an updated UTC 00 forecast in winter time; changes given before UTC 23 will give an updated UTC 18 forecast in summer time
initial time for UTC forecast deadline winter (UTC+1) deadline summer (UTC+2) UTC 00 till UTC 04 till UTC 05 UTC 06 till UTC 10 till UTC 11 UTC 12 till UTC 16 till UTC 17 UTC 18 till UTC 22 till UTC 23 Note
If you want to have the changes included in the new forecast, it is necessary to key in the
data within the 3 hours after the initial time. Maybe it is helpful to fix your local time too.
How long does it take until forecast data is available for a new location?