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Numerical Models

National Weather Service NCEP Model Loops - The loops in the tables below contain individual frames with map images created at the National Weather Service's NCEP (National Center for Environmental Prediction).


GFS Model

The GFS model produces forecasts out to 16 days, four times per day. The loop time steps are 6 hours from analysis time to 240 hours (10 days), then change to 12-hour time steps out to 384 hours (16 days).

Longer loops (384 hours) contain up to 48 frames, so a fast internet connection is recommended. Links to 120 hours (21 frames) and 240 hours (36 frames) of the model runs have been included for faster download purposes. Also, if bandwidth is a concern, you now have the option of choosing between small (640x480) and large images (1024x768).

S
Small - 640x480 pixel map images - for desktops 800x600 or larger
L
Large - 1024x768 pixel map images - for desktops 1280x1024 or larger
*
12 hour time steps for faster downloads [Note: precipitation is 6-hour amounts]

US (CONUS) View

Model Fields
GFS Model Loops
00 UTC
06 UTC
12 UTC
18 UTC
Mean SLP/Thickness/Pcpn
120
120
120
120
240
240
240
240
384
384
384
384
384*
 
 
700 MB Heights/Rel Humidity
120
120
120
120
240
240
240
240
384
384
384
384
384*
   
500 MB Heights/Vorticity
120
120
120
120
240
240
240
240
384
384
384
384
384*
 
   
250 MB Heights/Isotachs
120
120
120
120
240
240
240
240
384
384
384
384
384*
 

North Pacific View

Model Fields
GFS Model Loops
00 UTC
06 UTC
12 UTC
18 UTC
Mean SLP/Thickness/Pcpn
120
120
120
120
240
240
240
240
384
384
384
384
384*
 
 
700 MB Heights/Rel Humidity
120
120
120
120
240
240
240
240
384
384
384
384
384*
   
500 MB Heights/Vorticity
120
120
120
120
240
240
240
240
384
384
384
384
384*
 
   
250 MB Heights/Isotachs
120
120
120
120
240
240
240
240
384
384
384
384
384*
 

WRF-NAM Model

The WRF-NAM model produces forecasts out to 3.5 days, four times per day. The loop time steps are 6 hours from analyis time to 84 hours.

S
Small - 640x480 pixel map images - for desktops 800x600 or larger
L
Large - 1024x768 pixel map images - for desktops 1280x1024 or larger

Model Fields
WRF-NAM Model Loops
 
00 UTC
06 UTC
12 UTC
18 UTC
Mean SLP/Thickness/Pcpn
700 MB Heights/Rel Humidity
500 MB Heights/Vorticity
200 MB Heights/Isotachs


Other Sources of Model Guidance

Model
Source
WRF-NAM 
 ESRL, Edwards AFB, NCAR, NCEP
NCEP 12KM NAM (Eta) 
 00Z, 12Z
All NCEP Models/Comparisons 
 NCEP/EMC
NGM 
 NCEP
GFS 

 ESRL, FNMOC, NCAR, NCEP, Edwards AFB

RUC 
 FSL, Edwards AFB
MM5 
 CANSAC
NOGAPS (Navy FNMOC) 
 Eastern Pacific, North America
ECMWF 
 ECMWF
Canadian GSM (0-144 hrs) 
 Meteorological Service of Canada
Canadian GEM (0-48 hrs) 
 Meteorological Service of Canada
Canadian Ensemble 
 Meteorological Service of Canada
NCEP Ensemble 
 CDC
00UTC GFS Ensemble 
 Edwards AFB
Short Range Ensemble (SREF) 
 EMC/NCEP
Miscellaneous 
Precipitation Maps 
 NAM (Eta) 12-Hour Precipitation valid 12-48 hours
 GFS 12-Hour Precipitation valid 12-48 hours
 GFS 12-Hour Precipitation valid 60-96 hours
 GFS 24-Hour Precipitation valid 24-72 hours
 GFS 24-Hour Precipitation valid 96-168 hours
 GFS 14-Day Precipitation Outlook
GFS-Extended Orographic Aid 
GFS Orographic Aid 

Northern CA

WRF-NAM Orographic Aid 

Model Output Statistics Forecast Products (Meteorological Development Lab)

Short-range GFS MOS (MAV)
Extended-range GFS MOS (MEX)
Eta MOS (MET)
Ensemble MOS
NGM MOS (FWC)

Meteorological Development Lab Current MOS Forecast Products Main Page

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