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Forecast Tools

Compmap
This dynamic web page uses Javascript and cascading style sheets to display hourly RUC2 model graphics, surface weather, and NCEP graphics. The user can overlay the different graphics to produce a web-based "composite map".
Upper Air Maps
	Maps and derived fields based on twice daily (00 and 12 UTC) radiosonde data over the continental U.S.
Mesoanalysis Graphics
Severe weather analyses updated hourly and usually centered on an SPC risk area.
Fire Weather Composite Maps
	Forecast and observational maps for various fire weather variables based on the Eta and RUC models.
Short-Range Ensemble Forecast (SREF)
The SPC Short-Range Ensemble Forecast (SREF) system is based on postprocessing the 15 member NCEP SREF plus the 3-hour time lagged, operational (12 km grid spacing) NCEP Eta for a total of 16 members.
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