814 FPUS65 KCYS 232152 SFPWY WYZALL-241200- STATE FORECAST FOR WYOMING NATIONAL WEATHER SERVICE RIVERTON WY 330 PM MST MON DEC 23 2002 .TONIGHT...MOSTLY CLOUDY WITH ISOLATED SNOW SHOWERS SOUTH. AREAS OF FOG AND LOW CLOUDS WESTERN AND CENTRAL VALLEYS. PARTLY CLOUDY ELSEWHERE. LOWS 10 BELOW ZERO TO 10 ABOVE ZERO. .TUESDAY...AREAS OF MORNING FOG AND LOW CLOUDS WESTERN AND CENTRAL VALLEYS. ISOLATED SNOW SHOWERS SOUTH...OTHERWISE MOSTLY SUNNY. HIGHS 15 TO 30. .TUESDAY NIGHT...MOSTLY CLEAR. PATCHY FOG CENTRAL BASINS. LOWS 10 BELOW ZERO TO 10 ABOVE ZERO. .CHRISTMAS...A CHANCE OF SNOW WESTERN MOUNTAINS WITH ISOLATED SNOW SHOWERS CARBON COUNTY. MOSTLY CLEAR TO PARTLY CLOUDY ELSEWHERE. HIGHS 15 TO 30. .EXTENDED FORECAST... .THURSDAY...SNOW LIKELY IN THE WESTERN MOUNTAINS BY AFTERNOON WITH A CHANCE OF SNOW WESTERN VALLEYS. DRY ELSEWHERE...EXCEPT A SLIGHT CHANCE OF SNOW SHOWERS SOUTHEAST MOUNTAINS. WINDY AREAS. LOWS IN THE SINGLE DIGITS AND TEENS WITH ZERO TO 5 BELOW IN THE WESTERN AND CENTRAL VALLEYS. HIGHS IN THE 20S AND 30S...45 TO 55 NORTHEAST. .FRIDAY...SNOW LIKELY WESTERN MOUNTAINS WITH A CHANCE OF SNOW SOUTH CENTRAL. CONTINUED WINDY. LOWS IN THE SINGLE DIGITS AND TEENS. HIGHS IN THE 30S AND 40S WITH 20S MOUNTAINS. .SATURDAY...SNOW LIKELY WESTERN MOUNTAINS WITH A CHANCE OF SNOW WESTERN VALLEYS AND SOUTH CENTRAL. WINDY AREAS. LOWS IN THE SINGLE DIGITS AND TEENS. HIGHS IN THE 30S TO LOWER 40S WITH 20S MOUNTAINS. $$ DCC/JMR/PS/CF