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Posted at 4:00 AM ET, 01/ 8/2008

Links: Models & Technical Discussion

By Jason Samenow

This page contains links to computer simulations of the atmosphere used by meteorologists to forecast the weather. It also includes technical discussions. Understanding the content of these links would be aided through self-study or by taking some classes in meteorology.


For an overview on interpreting computer models, see: -and/or- The UniSys Model Interpretation Guide . If you have some background in meteorology, you might consider taking the online Model Fundamentals course offered by the Cooperative Program for Online Meteorology, Education and Training (COMET).

This is not an exhaustive list of models, but the most frequently referenced. If you want more comprehensive listings, try the model tables at WeatherLinkHub and the Penn State E-wall. and provide excellent interfaces for generating loops and comparing models.

US Models

Best Site
Other Sites
NAMNCEP- Fast: 0z run complete around 10:15 EST
- 6, 12, 24, 36, 48 and 60 hr cumulative precip
NexLab: NexLab has nice Java animations as well as thermodynamic/severe wx diagnostics. Univ. of Wisc has reliable, clean graphics. Usually fast.

GFS/AVNNCEP- Goes out 16 days
- Fast with four daily runs
Univ. of Wisc.

European/Canadian Models

Best Site
Backup Sites
ECMWFNexLab- Most data and nicest graphicsUnisys: Limited information.
UKMETNexLab- ReliableUniv.
of Wyoming
: Graphics aren't great but you can choose the levels and contour variables you want to display/loop
GEMCanada Wx Office - Reliable

Gridded Model Data, from Texas A&M.

Model Soundings, from Plymouth University.

Ensemble Prediction System Graphics - North America from NOAA's National Center for Environmental Prediction

Models for tropical cyclone forecasting from Penn State. See also Tropical E-wall from Penn State.


By Jason Samenow  | January 8, 2008; 4:00 AM ET
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