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Numerical Models
Please Note: On December 26, 2012, the Model Analysis and Guidance (MAG) website experienced a major hardware failure. For updated information, click here. |
On March 15, 2011, NCEP Central Operations redesigned its website hosting graphical numerical model analyses and guidance. Their new Model Analyses and Guidance webpage features an easy-to-use interface providing access to all NCEP products, including model guidance, observations and analyses, and tropical guidance across several user-selectable domains. The use of Flash-based technology in image loops provides faster loading and improved image appearance, along with the ability to zoom in and out of static images. Please refer to the sites listed above to view the latest guidance from NCEP.
For those unable to access loops utilizing Flash-based technology, the image loops below for the GFS and WRF-NAM models are available.
GFS Model
The GFS (Global Forecast System) model produces forecasts
out to 16 days, four times per day. The loop time steps are 6 hours
from analysis time to 180 hours (7.5 days), then change to 12-hour time
steps out to 384 hours (16 days). Map view options include NAmer (North American) and NPacific (North Pacfic).
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Displayed Model Fields |
GFS
Model Analysis Times (UTC) |
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12 |
18 |
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850 MB Heights/PW/Winds |
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700 MB Heights/Rel Humidity/Winds |
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500 MB Heights/Vorticity/Winds
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250 MB Heights/Isotachs/Winds
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WRF-NAM Model
The WRF-NAM model (Weather and Research Forecast Model - North American Mesoscale) produces forecasts out to 3.5 days, four
times per day. The loop time steps are 6 hours from analysis time to
84 hours. Map view options include NAmer (North American) and NPacific (North Pacfic).
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Displayed Model Fields |
WRF-NAM
Model Analysis Time (UTC) |
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06 |
12 |
18 |
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700 MB Heights/Rel Humidity/Winds
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500 MB Heights/Vorticity/Winds
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250 MB Heights/Isotachs/Winds
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Other Sources of Model Guidance
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Model |
Source |
NCEP Model Analyses and Guidance |
NCEP |
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NCEP, ESRL, Edwards AFB, NCAR |
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NCEP, ESRL,
FNMOC,
NCAR, Edwards AFB |
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NCEP, Edwards AFB, ESRL |
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CANSAC |
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Eastern Pacific, North America |
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ECMWF |
Canadian GEM (0-144 hrs, Global) |
Meteorological
Service of Canada |
Canadian GEM (0-48 hrs, Regional) |
Meteorological
Service of Canada |
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Meteorological
Service of Canada |
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NCEP, ESRL |
00UTC GFS Ensemble |
Edwards AFB |
Short Range Ensemble (SREF) |
NCEP, NCEP/EMC |
| 13-km Rapid Refresh (RR) |
ESRL |
3-km High Res Rapid Refresh (HRRR) |
ESRL |
Flow-following finite-volume
Icosahedral Model (FIM) |
ESRL |
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Miscellaneous
Precipitation Maps
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GFS 12-Hour Precipitation Totals (12-48 hours)
GFS 12-Hour Precipitation Totals (60-96 hours)
GFS 24-Hour Precipitation Totals (96-168 hours)
GFS 16-Day Precipitation Outlook (Temperature) |
GFS Rhea Orographic Aid |
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WRF-NAM Rhea Orographic Aid |
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Model Output Statistics Forecast Products (Meteorological Development Lab)
Short-range GFS MOS (MAV)
Extended-range GFS MOS (MEX)
Eta MOS (MET)
Ensemble MOS
Meteorological Development Lab Current MOS Forecast Products Main Page |
www.weather.gov 
