The Weather Forecasting Forum

Well, the general method we used "back in the day" was:

1) Use the 12Z sounding.

2) Determine if there was going to be a frontal passage and/or air mass change.

3) Determine whether it was going to be clear or partly cloudy to overcast.

4) If clear was your forecast, take the 850 temp dry ...

Are these files available for the whole world??

Short, ambiguous answer: Maybe. Read on...

These shape - files are "maps " right ?

Short answer, yes they are. Shapefiles are the most common vector format used in the realm of Geographic Information Systems (GIS). There are actually three files ...

Added some new shapefiles today:

http://www.centralnebraskaweather.net/daws/shapefiles/

Regards,

Mike

I'm creating subsets of some of the AWIPS shapefiles for use in DAWS since some of them are rather large and each user may find they only want them for a particular region. The first set, NWS CWA's, are online at:

http://www.centralnebraskaweather.net/daws/shapefiles/

I'm also open to any ...

TROWAL stands for "trough of warm air aloft". There's pretty good web based presentations on trowals as well as isentropic analysis at:

TROWAL Identification (Lindstrom, Bachmeier, Martin)
http://www.cira.colostate.edu/ramm/visit/trowal.html

Isentropic Analysis (Moore)
http://meted.ucar.edu ...

Actually, I think the PCGRIDDS command mode would be a good base to start with Tim, contingent on reversing it from right to left. For the most part I find the PCGRIDDS command pretty intuitive. For instance, being able to compute one hour field changes by using a TDIF command with the RUC fields ...

For the eta grids:
http://www.nco.ncep.noaa.gov/pmb/products/eta/
http://wwwt.emc.ncep.noaa.gov/mmb/etagrids/

For the GFS grids:
http://www.nco.ncep.noaa.gov/pmb/products/gfs/

For the ensembles:
http://www.nco.ncep.noaa.gov/pmb/products/ens/

For the RSAS grids:
http://www.nco.ncep.noaa ...

Here's a couple I know will work in DAWS. The ones listed below are all under 10mb per file:

ETA directory:
awps211 (North America)
grb5fm (Europe)

Regards,

Mike

Here's one good site for GRIB data I use for PCGRIDDS:

ftp://ftpprd.ncep.noaa.gov/pub/data/nccf/com/

Regards,

Mike