
Post by
zezo | 2014-01-25 | 14:07:20
There is a mouse over popup window on the status line GFS field where you can see the exact progress of the grib updates. gfst06z+132h would mean that the first 132 hours of the forecast come from the new model, and those after 132h come from the previous one, gfs00z
Sometimes even the first 12 hour are enough if you are close to the finish, but right now having just half the model data is not very useful.
The updates are scheduled at 11:00, 11:15, 11:30 and 11:45, same thing for 5,17 and 23 hours
What exactly is downloaded at those times depends on the NOAA servers and varies sligthly, now and then NOAA have issues and there are big delays, but generally:
:00 - t+96
:15 - t+132
:30 - t+192 (the full model)
the :45 run is mostly in case something went wrong earlier. The model also took few more minutes before NOAA upgraded their servers few years ago and the output was not complete at :30