…THE SEVERE THUNDERSTORM WARNING FOR NORTHERN COLLIN…SOUTHEASTERN GRAYSON AND FANNIN COUNTIES WILL EXPIRE AT 715 PM CDT… The storm which prompted the warning has weakened below severe limits. Therefore the warning will be allowed to expire. However small hail and gusty winds are still possible with this thunderstorm. A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for