This hazardous weather outlook is for extreme southwest Nebraska... northwest Kansas and east central Colorado. .DAY ONE...TODAY AND TONIGHT... A corridor of dense fog has developed and is impacting Sherman county along with portions of Kit Carson, Cheyenne county Colorado, Cheyenne county Kansas, Rawlins, Thomas and Wallace counties. Fog is forecast to dissipate by mid morning. A brief severe storm cannot be ruled out over a very limited portion of the area this afternoon, mainly in southern and eastern portions of Gove, Graham and Wichita counties between 4 PM and 7 PM CDT. Thunderstorm development, if any, will largely be confined to southwest and central Kansas. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY... No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Active weather across portions of the Tri-State Area is anticipated. Spotters are encouraged to report significant weather conditions.