National Weather Service United States Department of Commerce
Forecast Tools
Numerical and Graphical Guidance
The following links will provide some of the information meteorologists use to make a forecast for Arkansas.
 
GFS Numerical Guidance
NAM Numerical Guidance
Graphical Guidance
 
Model Choices
NAM Primary Alternate
GFS Primary Alternate
RUC Primary
 
Other Data Sources
SREF (winter weather) SREF (severe weather)
More Guidance
 
Surface and Upper Air Maps
Severe Weather Tools
Severe Weather Link 1
(overlay variables such as Boundary Layer Moisture Convengence, CAPE/CIN and Helicity/Shear...with a description of each variable by clicking the links provided)
Severe Weather Link 2
(severe weather analyses updated hourly and usually centered on an SPC risk area)
 
Other Tools