Out of interest what times do the GFS model update on the internet?
And secondly, there appears to be a varying time between the GFS T+0
to T+8 days and T+9 to T+16 days. I say this as the first lot have
recently changed this morning, whereas the second lot haven't, and
they are showing a very mild longer term ~ hence I'm hoping they will
change :-)

Keith (Southend)

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"Keith (Southend)" wrote in message
...
Out of interest what times do the GFS model update on the internet?
And secondly, there appears to be a varying time between the GFS T+0
to T+8 days and T+9 to T+16 days. I say this as the first lot have
recently changed this morning, whereas the second lot haven't, and
they are showing a very mild longer term ~ hence I'm hoping they will
change :-)


Andrew Bond posted in another thread the reason (I think) that there
appears to be a mis-match. Up to T+180, the GFS is run on a finer
resolution (both spatial and temporal); then beyond that, the res. is
course and with lengthier time-steps. I imagine that the post-processing
involved means that effectively you've got two products output, rather
than a seamless stream. I find that they are usually fully updated by
T+5hr, sometimes T+4.5hr.

Some information he but some of it I know is out of date...

http://homepage.ntlworld.com/booty.w...put.htm#Output

Martin.

--
FAQ & Glossary for uk.sci.weather at:-
http://homepage.ntlworld.com/booty.weather/uswfaqfr.htm

"Keith (Southend)" wrote in message
...
Out of interest what times do the GFS model update on the internet?
And secondly, there appears to be a varying time between the GFS T+0
to T+8 days and T+9 to T+16 days. I say this as the first lot have
recently changed this morning, whereas the second lot haven't, and
they are showing a very mild longer term ~ hence I'm hoping they will
change :-)

Keith (Southend)


At 16:00 yesterday, the 12Z run output only extended to +30 hrs (as accessed
from the Wetterzetrale site). Beyond that, it was still showing the 06Z run
output.

--
Pete

Please take my dog out twice to e-mail

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The views expressed above are entirely those of the writer and
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"Keith (Southend)" wrote in message
...
Out of interest what times do the GFS model update on the internet?

Hi Keith,

Take the 00z GFS as an example. The data is collected at 00z (duh!). then
the usual order of events is as follows :-

02:48 BUFR input files are loaded
02:56 Datasets are analysed and rogue or erroneous records are removed or
corrected
03:14 GFS model starts running
03:24 Metcheck/WetterZentrale etc start receiving the first of the 100
odd GRIB files for T+3
04:09 GFS complete

As for the current variability of the GFS, I was under the illusion that
there had been a problem with some of the BUFR files, but this turned out to
be a problem with the US AWIPS which is simply a way of viewing the output.
I spoke to NOAA today who confirmed that the GFS has had no problems with
data input, they praised the UKMO model for it's consistency and the HPC
forecasters simply put the GFS wobblies down to the variable weather
pattern.

Cheers,

A

Hi Keith,
For all the 0-180 hour time frames:-
GFS, 4 outputs a day, 00z released around 04:15-05:00, 06z, 10:15-11:00,
12z, 16:15-17:00 and 18z 22:15-23:00.
As for the 180+ time frames, generally about 1 hour after the 0-180's. So
for the 12z run, usually around 17:00-17:30.
Danny.
----------------------------------------------------------


"Keith (Southend)" wrote in message
...
Out of interest what times do the GFS model update on the internet?
And secondly, there appears to be a varying time between the GFS T+0
to T+8 days and T+9 to T+16 days. I say this as the first lot have
recently changed this morning, whereas the second lot haven't, and
they are showing a very mild longer term ~ hence I'm hoping they will
change :-)

Keith (Southend)

********************************
'Weather Home & Abroad'
http://www.southendweather.net
********************************
COL Station for Southend-on-Sea
http://www.wunderground.com/weathers...p?ID=IESSEXSO1
********************************
Reply to: kreh'at'southendweather'dot'net
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