Primary SKYWARN frequency is 146.920. For a complete list, see the DCARA site.
The output of the 146.920 repeater is available on the Internet at RadioReference.com.
Denton County SKYWARN Guidelines
Hail Size guide pdf doc
NOAA Weather Radio information
Zip of map files needed for Cooke, Denton and Wise Counties for use with GRLevel3. Instructions for their use.