510  
FPUS55 KRIW 170358  
ZFPRIW  
 
ZONE FORECAST PRODUCT FOR WESTERN AND CENTRAL WYOMING  
NATIONAL WEATHER SERVICE RIVERTON WY  
856 PM MST SAT DEC 16 2017  
 
WYZ020-171100-  
NATRONA COUNTY LOWER ELEVATIONS-  
INCLUDING THE CITY OF CASPER  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. NEW SNOW ACCUMULATION AROUND 1 INCH.  
TOTAL SNOW ACCUMULATION 2 TO 3 INCHES. LOWS 15 TO 19. NORTH WINDS  
15 TO 20 MPH. CHANCE OF SNOW 90 PERCENT.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE  
IN THE MORNING THEN BECOMING MOSTLY SUNNY. HIGHS 31 TO 35.  
SOUTHWEST WINDS 15 TO 20 MPH.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR UNTIL EARLY MORNING THEN  
BECOMING PARTLY CLOUDY. LOWS 18 TO 22. SOUTHWEST WINDS 15 TO  
25 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 35 TO 39. SOUTHWEST WINDS  
15 TO 25 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 19 TO 23. SOUTHWEST  
WINDS 15 TO 20 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS NEAR 40.    
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS IN THE MID 20S TO  
LOWER 30S.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SNOW, POSSIBLY  
MIXED WITH RAIN IN THE AFTERNOON. HIGHS NEAR 40. TEMPERATURES  
FALLING INTO THE LOWER 20S IN THE AFTERNOON. CHANCE OF  
PRECIPITATION 50 PERCENT.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 2 TO 6. WIND CHILL READINGS 11 BELOW TO  
21 BELOW ZERO.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY. A 20 PERCENT CHANCE OF  
SNOW IN THE MORNING. HIGHS AROUND 11. WIND CHILL READINGS  
11 BELOW TO 21 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN CLEARING.  
LOWS 4 BELOW TO ZERO. WIND CHILL READINGS 12 BELOW TO 22 BELOW  
ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 18.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. LOWS 2 BELOW TO 3 ABOVE  
ZERO. WIND CHILL READINGS 11 BELOW TO 21 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 17.  
 

 
 
WYZ017-171100-  
WIND RIVER BASIN-  
INCLUDING THE CITIES OF RIVERTON AND SHOSHONI  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
AFTER MIDNIGHT. NEW SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW  
ACCUMULATION AROUND 2 INCHES. LOWS AROUND 15. NORTHEAST WINDS  
AROUND 15 MPH EARLY IN THE EVENING. CHANCE OF SNOW 80 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY. HIGHS AROUND 31.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY THEN BECOMING MOSTLY CLEAR  
LATE IN THE EVENING THEN BECOMING PARTLY CLOUDY. LOWS 11 TO 15.  
SOUTHWEST WINDS 15 TO 20 MPH AFTER MIDNIGHT.    
MONDAY
 
MOSTLY CLOUDY. HIGHS 34 TO 38. SOUTHWEST WINDS AROUND  
15 MPH.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 17 TO 21. SOUTHWEST WINDS  
AROUND 15 MPH IN THE EVENING.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE MID TO UPPER 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 20S.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SNOW, POSSIBLY  
MIXED WITH RAIN IN THE AFTERNOON. HIGHS IN THE UPPER 30S. CHANCE  
OF PRECIPITATION 50 PERCENT.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 4 TO 8.    
THURSDAY
 
MUCH COLDER. CLOUDY WITH A 20 PERCENT CHANCE OF SNOW  
IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS AROUND  
14.    
THURSDAY NIGHT
 
COLDER. MOSTLY CLEAR IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 2 BELOW TO 6 BELOW ZERO. WIND CHILL  
READINGS 14 BELOW TO 24 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 15 TO 19. LOWEST WIND CHILL  
READINGS 10 BELOW TO 20 BELOW ZERO IN THE MORNING.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. LOWS 4 BELOW TO ZERO. WIND  
CHILL READINGS 12 BELOW TO 22 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 16. WIND CHILL READINGS 10 BELOW TO 20 BELOW  
ZERO.  
 

 
 
WYZ018-171100-  
LANDER FOOTHILLS-  
INCLUDING THE CITY OF LANDER  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
AFTER MIDNIGHT. NEW SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW  
ACCUMULATION 2 TO 3 INCHES. LOWS AROUND 16. NORTHEAST WINDS  
AROUND 15 MPH LATE IN THE EVENING. CHANCE OF SNOW 90 PERCENT.    
SUNDAY
 
PARTLY CLOUDY EARLY IN THE MORNING THEN CLEARING. HIGHS  
AROUND 32.    
SUNDAY NIGHT
 
PARTLY CLOUDY THEN BECOMING MOSTLY CLEAR IN THE  
LATE EVENING AND EARLY MORNING THEN BECOMING PARTLY CLOUDY. LOWS  
13 TO 17.    
MONDAY
 
MOSTLY CLOUDY. HIGHS AROUND 37.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 20 TO 24.    
TUESDAY
 
PARTLY CLOUDY. HIGHS AROUND 40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER TO MID 20S.    
WEDNESDAY
 
PARTLY CLOUDY. CHANCE OF SNOW, POSSIBLY MIXED WITH  
RAIN IN THE AFTERNOON. HIGHS IN THE LOWER 40S. CHANCE OF  
PRECIPITATION 30 PERCENT.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 6 TO 10.    
THURSDAY
 
MUCH COLDER. CLOUDY WITH A 20 PERCENT CHANCE OF SNOW  
IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS AROUND  
13.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY IN THE EVENING THEN  
CLEARING. LOWS 1 BELOW TO 6 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 18.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 3 BELOW TO 2 ABOVE ZERO.    
SATURDAY
 
PARTLY CLOUDY. HIGHS AROUND 16.  
 

 
 
WYZ028-171100-  
ROCK SPRINGS AND GREEN RIVER-  
INCLUDING THE CITIES OF ROCK SPRINGS AND GREEN RIVER  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW AFTER MIDNIGHT. LITTLE OR NO NEW SNOW  
ACCUMULATION. LOWS AROUND 16. WEST WINDS AROUND 15 MPH IN THE  
LATE EVENING AND EARLY MORNING. CHANCE OF SNOW 60 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY. HIGHS 30 TO 34. WEST WINDS  
AROUND 15 MPH.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR UNTIL EARLY MORNING THEN  
BECOMING PARTLY CLOUDY. LOWS 13 TO 17. WEST WINDS 15 TO 20 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. HIGHS 35 TO 39. WEST WINDS 15 TO 20 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 17 TO 22. WEST WINDS  
15 TO 20 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS NEAR 40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 19 TO 23.    
WEDNESDAY
 
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
HIGHS NEAR 40.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 5 TO 9.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY. A 30 PERCENT CHANCE OF  
SNOW IN THE MORNING. HIGHS 13 TO 17.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY IN THE EVENING THEN  
CLEARING. LOWS 4 BELOW TO 1 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 20S.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 1 TO 6.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 20S.  
 

 
 
WYZ013-171100-  
JACKSON HOLE-  
INCLUDING THE CITY OF JACKSON  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW  
EARLY IN THE EVENING. LOWS 8 TO 13. NORTH WINDS AROUND 15 MPH  
LATE IN THE EVENING.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 22 TO 26.    
SUNDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. SCATTERED SNOW SHOWERS. LOWS 10 TO 14. CHANCE OF SNOW  
40 PERCENT.    
MONDAY
 
CLOUDY WITH SCATTERED SNOW SHOWERS. HIGHS AROUND 28.  
CHANCE OF SNOW 40 PERCENT.    
MONDAY NIGHT
 
CLOUDY WITH A 40 PERCENT CHANCE OF SNOW. LOWS  
18 TO 22.    
TUESDAY
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW. HIGHS  
IN THE LOWER TO MID 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
LOWS 19 TO 23.    
WEDNESDAY
 
SNOW LIKELY. HIGHS IN THE LOWER TO MID 30S. CHANCE  
OF SNOW 60 PERCENT.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 4 TO 9.    
THURSDAY
 
COLDER. MOSTLY CLOUDY IN THE MORNING THEN CLEARING.  
HIGHS AROUND 15.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 3 BELOW TO 2 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
AFTERNOON. HIGHS AROUND 17.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS 2 BELOW TO 3 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 17.  
 

 
 
WYZ003-171100-  
CODY FOOTHILLS-  
INCLUDING THE CITIES OF CODY AND MEETEETSE  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY EARLY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN CHANCE OF  
SNOW IN THE LATE EVENING AND OVERNIGHT. PATCHY FREEZING FOG AFTER  
MIDNIGHT. LITTLE OR NO NEW SNOW ACCUMULATION. LOWS 13 TO 17.  
NORTHWEST WINDS AROUND 15 MPH EARLY IN THE EVENING. CHANCE OF  
PRECIPITATION 60 PERCENT.    
SUNDAY
 
BREEZY. MOSTLY SUNNY UNTIL LATE AFTERNOON THEN BECOMING  
PARTLY CLOUDY. PATCHY FREEZING FOG IN THE MORNING. HIGHS 31 TO  
35. SOUTHWEST WINDS 15 TO 20 MPH.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY UNTIL EARLY MORNING THEN  
BECOMING MOSTLY CLOUDY. LOWS 19 TO 23. SOUTHWEST WINDS 15 TO  
25 MPH.    
MONDAY
 
BREEZY. MOSTLY CLOUDY. HIGHS 39 TO 43. WEST WINDS 15 TO  
20 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY IN THE EVENING THEN  
BECOMING MOSTLY CLOUDY. LOWS 24 TO 29. WEST WINDS 15 TO 20 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 40S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 26 TO 31.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW. HIGHS NEAR 40.  
TEMPERATURES FALLING INTO THE LOWER 20S IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 5 TO 10.    
THURSDAY
 
COLDER. MOSTLY CLOUDY IN THE MORNING THEN CLEARING.  
HIGHS 15 TO 19.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 4 TO 9.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH A  
20 PERCENT CHANCE OF SNOW IN THE AFTERNOON. HIGHS IN THE LOWER TO  
MID 20S.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 3 TO 8.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 20S.  
 

 
 
WYZ004-171100-  
NORTH BIG HORN BASIN-  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
MOSTLY CLOUDY. SNOW LIKELY EARLY IN THE  
EVENING, THEN CHANCE OF SNOW IN THE LATE EVENING AND OVERNIGHT.  
PATCHY FREEZING FOG AFTER MIDNIGHT. NEW SNOW ACCUMULATION UP TO  
1 INCH. TOTAL SNOW ACCUMULATION UP TO 2 INCHES. LOWS 15 TO 19.  
NORTHWEST WINDS AROUND 15 MPH EARLY IN THE EVENING. CHANCE OF  
PRECIPITATION 60 PERCENT.    
SUNDAY
 
PARTLY CLOUDY. PATCHY FREEZING FOG IN THE MORNING.  
HIGHS AROUND 33. SOUTHEAST WINDS AROUND 15 MPH IN THE LATE  
MORNING AND AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING  
MOSTLY CLOUDY. LOWS 15 TO 20. SOUTH WINDS AROUND 15 MPH IN THE  
LATE EVENING AND OVERNIGHT.    
MONDAY
 
MOSTLY CLOUDY. HIGHS AROUND 39. SOUTH WINDS AROUND  
15 MPH.    
MONDAY NIGHT
 
MOSTLY CLOUDY. LOWS 19 TO 23.    
TUESDAY
 
PARTLY CLOUDY. HIGHS AROUND 40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 21 TO 26.    
WEDNESDAY
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW.  
HIGHS IN THE UPPER 30S.    
WEDNESDAY NIGHT
 
BREEZY, COLDER. CLOUDY WITH A 40 PERCENT  
CHANCE OF SNOW. LOWS AROUND 8.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY IN THE MORNING THEN  
CLEARING. HIGHS AROUND 18.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 1 TO 5.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH A  
20 PERCENT CHANCE OF SNOW IN THE AFTERNOON. HIGHS IN THE LOWER  
20S.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 3 TO 7.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 20S.  
 

 
 
WYZ006-171100-  
SOUTHEAST BIG HORN BASIN-  
INCLUDING THE CITY OF WORLAND  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER  
MIDNIGHT. NEW SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW  
ACCUMULATION 1 TO 2 INCHES. LOWS AROUND 16. CHANCE OF  
PRECIPITATION 70 PERCENT.    
SUNDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. PATCHY  
FREEZING FOG IN THE MORNING. HIGHS AROUND 33.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS 12 TO 16.    
MONDAY
 
MOSTLY CLOUDY. HIGHS AROUND 38.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 17 TO 21.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 19 TO 23.    
WEDNESDAY
 
PARTLY CLOUDY WITH A 50 PERCENT CHANCE OF SNOW.  
HIGHS IN THE LOWER 40S.    
WEDNESDAY NIGHT
 
BREEZY, COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS AROUND 8.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS 14 TO 18.    
THURSDAY NIGHT
 
COLDER. MOSTLY CLEAR IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 2 BELOW TO 2 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 19 TO 23.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS AROUND 2.    
SATURDAY
 
MOSTLY CLOUDY. HIGHS 18 TO 23.  
 

 
 
WYZ005-171100-  
SOUTHWEST BIG HORN BASIN-  
INCLUDING THE CITY OF THERMOPOLIS  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
CLOUDY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER MIDNIGHT. NEW  
SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW ACCUMULATION 2 TO  
3 INCHES. LOWS 12 TO 16. NORTHWEST WINDS AROUND 15 MPH EARLY IN  
THE EVENING. CHANCE OF PRECIPITATION 80 PERCENT.    
SUNDAY
 
PARTLY CLOUDY EARLY IN THE MORNING THEN CLEARING.  
PATCHY FREEZING FOG IN THE MORNING. HIGHS AROUND 32.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS 11 TO 16.    
MONDAY
 
MOSTLY CLOUDY. HIGHS AROUND 37.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS 17 TO 21.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE UPPER 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 19 TO 23.    
WEDNESDAY
 
PARTLY CLOUDY WITH A 50 PERCENT CHANCE OF SNOW.  
HIGHS IN THE UPPER 30S.    
WEDNESDAY NIGHT
 
BREEZY, COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 4 TO 8.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS AROUND 15.    
THURSDAY NIGHT
 
COLDER. MOSTLY CLEAR IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 4 BELOW TO 1 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 19.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 2 BELOW TO 3 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 19.  
 

 
 
WYZ023-171100-  
STAR VALLEY-  
INCLUDING THE CITIES OF AFTON, ALPINE, STAR VALLEY RANCH,  
AND THAYNE  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW  
EARLY IN THE EVENING. LOWS AROUND 12.    
SUNDAY
 
MOSTLY CLOUDY EARLY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 26.    
SUNDAY NIGHT
 
PARTLY CLOUDY UNTIL EARLY MORNING THEN BECOMING  
MOSTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN THE MORNING. LOWS  
10 TO 14. CHANCE OF SNOW 40 PERCENT.    
MONDAY
 
CLOUDY WITH SCATTERED SNOW SHOWERS. HIGHS AROUND 29.  
CHANCE OF SNOW 40 PERCENT.    
MONDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 17 TO 21.    
TUESDAY
 
MOSTLY CLOUDY. HIGHS IN THE MID 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 18 TO 22.    
WEDNESDAY
 
SNOW LIKELY. HIGHS IN THE MID 30S. CHANCE OF SNOW  
60 PERCENT.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 5 TO 9.    
THURSDAY
 
COLDER. MOSTLY CLOUDY IN THE MORNING THEN BECOMING  
PARTLY CLOUDY. HIGHS AROUND 15.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY. LOWS 4 BELOW TO ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 18.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS 1 BELOW TO 3 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 20.  
 

 
 
WYZ025-171100-  
UPPER GREEN RIVER BASIN FOOTHILLS-  
INCLUDING THE CITY OF PINEDALE  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
CLOUDY. A 50 PERCENT CHANCE OF SNOW EARLY IN  
THE EVENING. LITTLE OR NO NEW SNOW ACCUMULATION. LOWS 9 TO 13.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE AFTERNOON. HIGHS 25 TO 29. NORTHWEST WINDS AROUND  
15 MPH IN THE AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS 9 TO 13. NORTHWEST WINDS  
AROUND 15 MPH.    
MONDAY
 
MOSTLY CLOUDY WITH SCATTERED SNOW SHOWERS. HIGHS 28 TO  
32. CHANCE OF SNOW 30 PERCENT.    
MONDAY NIGHT
 
MOSTLY CLOUDY. LOWS 15 TO 19.    
TUESDAY
 
MOSTLY CLOUDY. HIGHS IN THE MID 30S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW AFTER  
MIDNIGHT. LOWS 14 TO 18.    
WEDNESDAY
 
MOSTLY CLOUDY. CHANCE OF SNOW IN THE MORNING, THEN  
SNOW LIKELY IN THE AFTERNOON. HIGHS IN THE MID 30S. CHANCE OF  
SNOW 60 PERCENT.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 5 TO 9.    
THURSDAY
 
COLDER. MOSTLY CLOUDY IN THE MORNING THEN BECOMING  
PARTLY CLOUDY. HIGHS AROUND 18.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY. LOWS 4 BELOW TO 1 ABOVE  
ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 20.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 2 BELOW TO 3 ABOVE ZERO.    
SATURDAY
 
PARTLY CLOUDY. HIGHS AROUND 20.  
 

 
 
WYZ026-171100-  
UPPER GREEN RIVER BASIN-  
INCLUDING THE CITIES OF LA BARGE, BIG PINEY, AND FARSON  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW IN THE LATE EVENING AND OVERNIGHT. NEW SNOW  
ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION UP TO  
2 INCHES. LOWS 10 TO 14. NORTHEAST WINDS AROUND 15 MPH IN THE  
LATE EVENING AND EARLY MORNING. CHANCE OF SNOW 60 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE AFTERNOON. HIGHS 28 TO 32. NORTHWEST WINDS AROUND  
15 MPH LATE IN THE AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS 6 TO 10. NORTHWEST WINDS  
AROUND 15 MPH.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. HIGHS 31 TO 35. WEST WINDS AROUND 15 MPH.    
MONDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS 11 TO 15. WEST WINDS AROUND 15 MPH IN THE EVENING.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 34 TO 39.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 12 TO 16.    
WEDNESDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. A 40 PERCENT CHANCE OF SNOW. HIGHS IN THE MID TO UPPER  
30S.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 2 TO 7. WIND CHILL READINGS 10 BELOW TO 20 BELOW ZERO.   
THURSDAY
 
COLDER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS  
15 TO 19. WIND CHILL READINGS 10 BELOW TO 20 BELOW ZERO.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY. LOWS 6 BELOW TO 11 BELOW  
ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 18 TO 23. LOWEST WIND CHILL  
READINGS 13 BELOW TO 23 BELOW ZERO IN THE MORNING.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 3 BELOW TO 8 BELOW ZERO.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 19 TO 24. LOWEST WIND CHILL  
READINGS 11 BELOW TO 21 BELOW ZERO IN THE MORNING.  
 

 
 
WYZ010-171100-  
NORTHEAST JOHNSON COUNTY-  
INCLUDING THE CITY OF BUFFALO  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW IN THE LATE EVENING AND OVERNIGHT. PATCHY FREEZING  
FOG AFTER MIDNIGHT. NEW SNOW ACCUMULATION UP TO 1 INCH. TOTAL  
SNOW ACCUMULATION 1 TO 2 INCHES. LOWS AROUND 17. CHANCE OF  
PRECIPITATION 70 PERCENT.    
SUNDAY
 
PARTLY CLOUDY IN THE MORNING THEN CLEARING. PATCHY  
FREEZING FOG IN THE MORNING. HIGHS AROUND 37.    
SUNDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS AROUND 22. SOUTHWEST WINDS AROUND 15 MPH AFTER  
MIDNIGHT.    
MONDAY
 
MOSTLY CLOUDY. HIGHS AROUND 46. WEST WINDS AROUND  
15 MPH IN THE AFTERNOON.    
MONDAY NIGHT
 
MOSTLY CLOUDY. LOWS AROUND 23.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER 40S.    
TUESDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. LOWS IN THE UPPER 20S.    
WEDNESDAY
 
MOSTLY CLOUDY IN THE MORNING, THEN PARTLY CLOUDY  
WITH CHANCE OF SNOW IN THE AFTERNOON. HIGHS IN THE LOWER 40S.  
CHANCE OF SNOW 50 PERCENT.    
WEDNESDAY NIGHT
 
WINDY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS AROUND 7.    
THURSDAY
 
BREEZY. MUCH COLDER. CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS AROUND 16.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS AROUND 7.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. HIGHS IN THE MID 20S.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS AROUND 8.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 20S.  
 

 
 
WYZ011-171100-  
SOUTHEAST JOHNSON COUNTY-  
INCLUDING THE CITY OF KAYCEE  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
CLOUDY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER MIDNIGHT. NEW  
SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW ACCUMULATION 2 TO  
3 INCHES. LOWS AROUND 17. NORTH WINDS AROUND 15 MPH EARLY IN THE  
EVENING. CHANCE OF PRECIPITATION 80 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY EARLY IN THE MORNING THEN CLEARING.  
PATCHY FREEZING FOG IN THE MORNING. HIGHS AROUND 36. SOUTHWEST  
WINDS AROUND 15 MPH.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS AROUND 21. SOUTHWEST WINDS 15 TO 20 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. HIGHS 41 TO 45. SOUTHWEST WINDS 15 TO 20 MPH.    
MONDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS AROUND 23. WEST WINDS AROUND 15 MPH IN THE EVENING.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER 40S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE UPPER 20S.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY. CHANCE OF SNOW, POSSIBLY  
MIXED WITH RAIN IN THE AFTERNOON. HIGHS IN THE MID 40S. CHANCE OF  
PRECIPITATION 50 PERCENT.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS AROUND 7.    
THURSDAY
 
BREEZY. MUCH COLDER. CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS 14 TO 18.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 2 TO 6.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING, THEN MOSTLY CLOUDY WITH A  
20 PERCENT CHANCE OF SNOW IN THE AFTERNOON. HIGHS IN THE LOWER TO  
MID 20S.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 3 TO 7.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS IN THE LOWER TO MID 20S.  
 

 
 
WYZ027-171100-  
SOUTH LINCOLN COUNTY-  
INCLUDING THE CITIES OF KEMMERER AND COKEVILLE  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. A 40 PERCENT CHANCE OF SNOW EARLY IN  
THE EVENING. LOWS 11 TO 15. NORTHWEST WINDS AROUND 15 MPH IN THE  
LATE EVENING AND EARLY MORNING.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE  
IN THE MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING PARTLY  
CLOUDY LATE IN THE AFTERNOON. HIGHS 26 TO 30. WEST WINDS 15 TO  
20 MPH IN THE LATE MORNING AND AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS 9 TO 13. WEST WINDS AROUND  
15 MPH.    
MONDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. HIGHS 31 TO 35. WEST WINDS AROUND 15 MPH.    
MONDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS 14 TO 18. WEST WINDS AROUND 15 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE MID 30S TO LOWER 40S.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 16 TO 20.    
WEDNESDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. A 40 PERCENT CHANCE OF SNOW. HIGHS IN THE MID 30S TO  
LOWER 40S.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 4 TO 8.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE  
OF SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON.  
HIGHS 13 TO 17.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY. LOWS 4 BELOW TO 1 ABOVE  
ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 18 TO 22.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. LOWS 1 BELOW TO 4 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 19 TO 23.  
 

 
 
WYZ016-171100-  
UPPER WIND RIVER BASIN-  
INCLUDING THE CITY OF DUBOIS  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW LATE IN THE EVENING. NEW SNOW ACCUMULATION UP TO  
1 INCH. TOTAL SNOW ACCUMULATION 1 TO 2 INCHES. LOWS AROUND 14.  
CHANCE OF SNOW 70 PERCENT.    
SUNDAY
 
BREEZY. PARTLY CLOUDY EARLY IN THE MORNING THEN  
CLEARING. HIGHS 29 TO 34. NORTHWEST WINDS 15 TO 25 MPH.    
SUNDAY NIGHT
 
WINDY. PARTLY CLOUDY. LOWS 16 TO 20. NORTHWEST  
WINDS 20 TO 30 MPH.    
MONDAY
 
BREEZY. MOSTLY CLOUDY IN THE MORNING THEN BECOMING  
PARTLY CLOUDY. HIGHS 35 TO 40. WEST WINDS 15 TO 20 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 23. WEST WINDS  
15 TO 20 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS NEAR 40.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE LOWER 20S.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. HIGHS IN THE MID 30S TO LOWER 40S. TEMPERATURES FALLING  
INTO THE LOWER 20S IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS 7 TO 11.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY IN THE MORNING THEN  
BECOMING PARTLY CLOUDY. HIGHS AROUND 17.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 2 TO 6.    
FRIDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER 20S.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 2 TO 7.    
SATURDAY
 
PARTLY CLOUDY. HIGHS AROUND 20.  
 

 
 
WYZ001-171100-  
YELLOWSTONE NATIONAL PARK-  
INCLUDING THE CITIES OF LAKE, MAMMOTH, AND OLD FAITHFUL  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW  
EARLY IN THE EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS  
3 TO 9. NORTH WINDS AROUND 15 MPH LATE IN THE EVENING.    
SUNDAY
 
PARTLY CLOUDY UNTIL LATE AFTERNOON THEN BECOMING MOSTLY  
CLOUDY. SCATTERED SNOW SHOWERS LATE IN THE AFTERNOON. HIGHS 17 TO  
23. SOUTHWEST WINDS AROUND 15 MPH. CHANCE OF SNOW 30 PERCENT.    
SUNDAY NIGHT
 
BREEZY. CLOUDY WITH SCATTERED SNOW SHOWERS. LOWS  
9 TO 15. SOUTHWEST WINDS 15 TO 20 MPH. CHANCE OF SNOW 30 PERCENT.   
MONDAY
 
BREEZY, CLOUDY. SCATTERED SNOW SHOWERS IN THE MORNING,  
THEN NUMEROUS SNOW SHOWERS IN THE AFTERNOON. SNOW ACCUMULATION OF  
1 TO 2 INCHES. HIGHS 21 TO 27. SOUTHWEST WINDS 15 TO 25 MPH.  
CHANCE OF SNOW 60 PERCENT.    
MONDAY NIGHT
 
BREEZY. CLOUDY WITH A 50 PERCENT CHANCE OF SNOW.  
SNOW ACCUMULATION OF 1 TO 2 INCHES. TOTAL SNOW ACCUMULATION 2 TO  
4 INCHES. LOWS 16 TO 22. SOUTHWEST WINDS 15 TO 20 MPH.    
TUESDAY
 
BREEZY, CLOUDY. CHANCE OF SNOW IN THE MORNING, THEN  
SCATTERED SNOW SHOWERS IN THE AFTERNOON. HIGHS 25 TO 31. CHANCE  
OF SNOW 40 PERCENT.    
TUESDAY NIGHT
 
MOSTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW.  
LOWS 16 TO 22.    
WEDNESDAY
 
BREEZY. SNOW LIKELY. HIGHS 24 TO 30. CHANCE OF SNOW  
60 PERCENT.    
WEDNESDAY NIGHT
 
MUCH COLDER. CLOUDY WITH A 50 PERCENT CHANCE  
OF SNOW. LOWS 4 BELOW TO 2 ABOVE ZERO. WIND CHILL READINGS  
14 BELOW TO 24 BELOW ZERO.    
THURSDAY
 
COLDER. PARTLY CLOUDY IN THE MORNING THEN CLEARING.  
HIGHS 8 TO 14. LOWEST WIND CHILL READINGS 17 BELOW TO 27 BELOW  
ZERO IN THE MORNING.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 7 BELOW TO 1 ABOVE ZERO.    
FRIDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
AFTERNOON. HIGHS 11 TO 17. LOWEST WIND CHILL READINGS 10 BELOW TO  
20 BELOW ZERO IN THE MORNING.    
FRIDAY NIGHT
 
MOSTLY CLOUDY. LOWS 7 BELOW TO 1 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 12 TO 18. WIND CHILL READINGS 13 BELOW TO 23 BELOW  
ZERO.  
 

 
 
WYZ029-171100-  
FLAMING GORGE-  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
AFTER MIDNIGHT. LITTLE OR NO NEW SNOW ACCUMULATION. LOWS AROUND  
17. CHANCE OF SNOW 80 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY EARLY IN THE  
AFTERNOON THEN BECOMING MOSTLY SUNNY. HIGHS 31 TO 36. WEST WINDS  
AROUND 15 MPH IN THE LATE MORNING AND AFTERNOON.    
SUNDAY NIGHT
 
MOSTLY CLEAR UNTIL EARLY MORNING THEN BECOMING  
PARTLY CLOUDY. LOWS AROUND 17. WEST WINDS AROUND 15 MPH IN THE  
EVENING BECOMING WEST AROUND 15 MPH EARLY IN THE MORNING.    
MONDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 36 TO 41. WEST WINDS 15 TO  
20 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 21. WEST WINDS  
15 TO 20 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS IN THE LOWER TO MID 40S.    
TUESDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS IN THE LOWER 20S.    
WEDNESDAY
 
PARTLY CLOUDY WITH A 50 PERCENT CHANCE OF SNOW.  
HIGHS 39 TO 44.    
WEDNESDAY NIGHT
 
COLDER. CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. LOWS AROUND 9.    
THURSDAY
 
MUCH COLDER. MOSTLY CLOUDY. A 30 PERCENT CHANCE OF  
SNOW IN THE MORNING. HIGHS 13 TO 18.    
THURSDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN CLEARING.  
LOWS AROUND 1.    
FRIDAY
 
NOT AS COLD. PARTLY CLOUDY. HIGHS 21 TO 26.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 5.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 21 TO 26.  
 

 
 
WYZ022-171100-  
CASPER MOUNTAIN-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN ISOLATED SNOW  
SHOWERS EARLY IN THE MORNING. NEW SNOW ACCUMULATION UP TO 1 INCH.  
TOTAL SNOW ACCUMULATION UP TO 2 INCHES. LOWS 14 TO 20. NORTHEAST  
WINDS AROUND 15 MPH EARLY IN THE EVENING. CHANCE OF SNOW  
90 PERCENT.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY WITH ISOLATED SNOW SHOWERS IN THE  
MORNING, THEN MOSTLY SUNNY IN THE AFTERNOON. HIGHS 26 TO 32.  
SOUTHWEST WINDS 15 TO 25 MPH IN THE LATE MORNING AND AFTERNOON.  
CHANCE OF SNOW 20 PERCENT.    
SUNDAY NIGHT
 
WINDY. MOSTLY CLEAR UNTIL EARLY MORNING THEN  
BECOMING PARTLY CLOUDY. LOWS 17 TO 23. SOUTHWEST WINDS 20 TO  
30 MPH.    
MONDAY
 
WINDY. PARTLY CLOUDY. HIGHS 30 TO 36. SOUTHWEST WINDS  
20 TO 30 MPH.    
MONDAY NIGHT
 
WINDY. PARTLY CLOUDY. LOWS 19 TO 25. SOUTHWEST  
WINDS 20 TO 30 MPH.    
TUESDAY
 
WINDY. PARTLY CLOUDY. HIGHS 31 TO 37.    
TUESDAY NIGHT
 
BREEZY. MOSTLY CLEAR IN THE EVENING THEN  
BECOMING PARTLY CLOUDY. LOWS 25 TO 31.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. HIGHS 35 TO 41. TEMPERATURES FALLING INTO THE LOWER 20S IN  
THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. SNOW LIKELY. LOWS ZERO TO  
6 ABOVE. CHANCE OF SNOW 60 PERCENT.    
THURSDAY
 
BREEZY. MUCH COLDER. CLOUDY. A 40 PERCENT CHANCE OF  
SNOW IN THE MORNING. HIGHS 4 TO 10. WIND CHILL READINGS 11 BELOW  
TO 21 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN CLEARING.  
LOWS 5 BELOW TO 1 ABOVE ZERO. WIND CHILL READINGS 10 BELOW TO  
20 BELOW ZERO.    
FRIDAY
 
NOT AS COLD. PARTLY CLOUDY. HIGHS 12 TO 18.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. LOWS 1 BELOW TO 5 ABOVE  
ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 11 TO 17.  
 

 
 
WYZ002-171100-  
ABSAROKA MOUNTAINS-  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER MIDNIGHT. NEW  
SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW ACCUMULATION UP TO  
3 INCHES. LOWS 6 TO 12. WEST WINDS AROUND 15 MPH AFTER MIDNIGHT.  
CHANCE OF PRECIPITATION 80 PERCENT.    
SUNDAY
 
BREEZY. PARTLY CLOUDY THEN BECOMING MOSTLY SUNNY LATE  
IN THE MORNING THEN BECOMING PARTLY CLOUDY. PATCHY FREEZING FOG  
IN THE MORNING. HIGHS 19 TO 27. WEST WINDS 15 TO 25 MPH.    
SUNDAY NIGHT
 
WINDY. PARTLY CLOUDY EARLY IN THE EVENING THEN  
BECOMING MOSTLY CLOUDY. SCATTERED SNOW SHOWERS. AREAS OF BLOWING  
SNOW EARLY IN THE MORNING. LOWS 13 TO 19. WEST WINDS 20 TO  
30 MPH. CHANCE OF SNOW 30 PERCENT.    
MONDAY
 
WINDY. CLOUDY WITH SCATTERED SNOW SHOWERS. AREAS OF  
BLOWING SNOW. SNOW ACCUMULATION UP TO 1 INCH. HIGHS 23 TO 33.  
WEST WINDS 25 TO 35 MPH. CHANCE OF SNOW 50 PERCENT.    
MONDAY NIGHT
 
WINDY. CLOUDY WITH A 40 PERCENT CHANCE OF SNOW.  
AREAS OF BLOWING SNOW. LOWS 18 TO 24. WEST WINDS 25 TO 35 MPH  
DECREASING TO 15 TO 25 MPH AFTER MIDNIGHT.    
TUESDAY
 
WINDY. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
HIGHS 25 TO 35.    
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE  
OF SNOW. LOWS 18 TO 26.    
WEDNESDAY
 
BREEZY. MOSTLY CLOUDY WITH SNOW LIKELY. HIGHS 23 TO  
33. TEMPERATURES FALLING INTO THE LOWER TEENS IN THE AFTERNOON.  
CHANCE OF SNOW 60 PERCENT.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY. SNOW LIKELY IN  
THE EVENING, THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS ZERO TO  
6 ABOVE. CHANCE OF SNOW 60 PERCENT. WIND CHILL READINGS 19 BELOW  
TO 29 BELOW ZERO.    
THURSDAY
 
BREEZY, COLDER. MOSTLY CLOUDY IN THE MORNING THEN  
CLEARING. HIGHS 9 TO 15. WIND CHILL READINGS 19 BELOW TO 29 BELOW  
ZERO.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS ZERO TO 6 ABOVE. WIND CHILL READINGS 14 BELOW  
TO 24 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. HIGHS 13 TO 19. WIND CHILL  
READINGS 11 BELOW TO 21 BELOW ZERO.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
LOWS 3 BELOW TO 5 ABOVE ZERO. WIND CHILL READINGS 19 BELOW TO  
29 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 11 TO 17. WIND CHILL READINGS 16 BELOW TO 26 BELOW  
ZERO.  
 

 
 
WYZ007-171100-  
OWL CREEK AND BRIDGER MOUNTAINS-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. NEW SNOW ACCUMULATION AROUND 1 INCH.  
TOTAL SNOW ACCUMULATION 2 TO 3 INCHES. LOWS 12 TO 18. NORTHWEST  
WINDS 15 TO 20 MPH EARLY IN THE EVENING. CHANCE OF SNOW  
80 PERCENT.    
SUNDAY
 
PARTLY CLOUDY EARLY IN THE MORNING THEN CLEARING. HIGHS  
25 TO 31. SOUTHWEST WINDS AROUND 15 MPH IN THE LATE MORNING AND  
EARLY AFTERNOON.    
SUNDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 17. SOUTHWEST WINDS  
AROUND 15 MPH IN THE LATE EVENING AND OVERNIGHT.    
MONDAY
 
MOSTLY CLOUDY. HIGHS 32 TO 38. SOUTHWEST WINDS AROUND  
15 MPH.    
MONDAY NIGHT
 
PARTLY CLOUDY. LOWS AROUND 22. SOUTHWEST WINDS  
AROUND 15 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 33 TO 39.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS IN THE MID 20S.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. HIGHS 33 TO 39.    
WEDNESDAY NIGHT
 
BREEZY, COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 4 TO 10.    
THURSDAY
 
BREEZY, COLDER. CLOUDY WITH A 20 PERCENT CHANCE OF  
SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS  
10 TO 16. WIND CHILL READINGS 10 BELOW TO 20 BELOW ZERO.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 1 BELOW TO 5 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
AFTERNOON. HIGHS 14 TO 20.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. LOWS ZERO TO 6 ABOVE.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 13 TO 19.  
 

 
 
WYZ008-171100-  
BIGHORN MOUNTAINS WEST-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER MIDNIGHT. NEW SNOW  
ACCUMULATION AROUND 1 INCH. TOTAL SNOW ACCUMULATION 2 TO  
3 INCHES. LOWS 10 TO 18. EAST WINDS AROUND 15 MPH EARLY IN THE  
EVENING BECOMING SOUTHWEST AROUND 15 MPH EARLY IN THE MORNING.  
CHANCE OF PRECIPITATION 90 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE AFTERNOON. PATCHY FREEZING FOG IN THE MORNING. HIGHS  
22 TO 30. SOUTHWEST WINDS AROUND 15 MPH.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 15 TO 21. NORTHWEST  
WINDS AROUND 15 MPH SHIFTING TO THE WEST EARLY IN THE MORNING.    
MONDAY
 
BREEZY. MOSTLY CLOUDY. HIGHS 28 TO 36. WEST WINDS 15 TO  
25 MPH.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY. LOWS 18 TO 24. WEST WINDS  
15 TO 25 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 29 TO 37.    
TUESDAY NIGHT
 
PARTLY CLOUDY. LOWS 21 TO 27.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW. HIGHS 27 TO 37.  
TEMPERATURES FALLING INTO THE MID TEENS IN THE AFTERNOON. LOWEST  
WIND CHILL READINGS 15 BELOW TO 25 BELOW ZERO IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 2 BELOW TO 8 ABOVE ZERO. WIND CHILL READINGS  
26 BELOW TO 36 BELOW ZERO.    
THURSDAY
 
COLDER. CLOUDY WITH A 20 PERCENT CHANCE OF SNOW IN  
THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS 6 TO 12.  
WIND CHILL READINGS 23 BELOW TO 33 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 2 BELOW TO 6 ABOVE ZERO.  
WIND CHILL READINGS 18 BELOW TO 28 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. A 30 PERCENT CHANCE OF SNOW. HIGHS 12 TO 18. WIND CHILL  
READINGS 14 BELOW TO 24 BELOW ZERO.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
LOWS 3 BELOW TO 5 ABOVE ZERO. WIND CHILL READINGS 22 BELOW TO  
32 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
MORNING. HIGHS 10 TO 16. WIND CHILL READINGS 19 BELOW TO 29 BELOW  
ZERO.  
 

 
 
WYZ009-171100-  
BIGHORN MOUNTAINS SOUTHEAST-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. PATCHY FREEZING FOG AFTER MIDNIGHT. NEW  
SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW ACCUMULATION 2 TO  
3 INCHES. NEAR STEADY TEMPERATURE AROUND 17. NORTHEAST WINDS  
15 TO 20 MPH SHIFTING TO THE WEST EARLY IN THE MORNING. CHANCE OF  
PRECIPITATION 90 PERCENT.    
SUNDAY
 
BREEZY. PARTLY CLOUDY EARLY IN THE MORNING THEN  
CLEARING. PATCHY FREEZING FOG IN THE MORNING. HIGHS 24 TO 30.  
WEST WINDS 15 TO 25 MPH.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. NEAR STEADY TEMPERATURE AROUND 20. WEST WINDS  
15 TO 25 MPH.    
MONDAY
 
WINDY. NOT AS COLD. PARTLY CLOUDY IN THE MORNING THEN  
BECOMING MOSTLY CLOUDY. HIGHS 31 TO 39. WEST WINDS 20 TO 30 MPH.    
MONDAY NIGHT
 
WINDY. PARTLY CLOUDY. LOWS 18 TO 24. WEST WINDS  
20 TO 30 MPH DECREASING TO 15 TO 20 MPH AFTER MIDNIGHT.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 30 TO 38.    
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 23 TO 29.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. HIGHS 30 TO 38. TEMPERATURES FALLING INTO THE MID TEENS IN  
THE AFTERNOON. LOWEST WIND CHILL READINGS 16 BELOW TO 26 BELOW  
ZERO IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 2 BELOW TO 6 ABOVE ZERO. WIND CHILL READINGS  
25 BELOW TO 35 BELOW ZERO.    
THURSDAY
 
MUCH COLDER. CLOUDY WITH A 20 PERCENT CHANCE OF SNOW  
IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS 6 TO  
12. WIND CHILL READINGS 23 BELOW TO 33 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 1 BELOW TO 5 ABOVE ZERO.  
WIND CHILL READINGS 17 BELOW TO 27 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY IN THE MORNING THEN BECOMING MOSTLY  
CLOUDY. A 30 PERCENT CHANCE OF SNOW. HIGHS 13 TO 19. WIND CHILL  
READINGS 14 BELOW TO 24 BELOW ZERO.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF SNOW.  
LOWS 1 BELOW TO 5 ABOVE ZERO. WIND CHILL READINGS 23 BELOW TO  
33 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW IN THE  
MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS 11 TO 17.  
WIND CHILL READINGS 20 BELOW TO 30 BELOW ZERO.  
 

 
 
WYZ012-171100-  
TETON AND GROS VENTRE MOUNTAINS-  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW AFTER MIDNIGHT. LITTLE OR NO NEW SNOW  
ACCUMULATION. LOWS 7 TO 13. NORTHEAST WINDS AROUND 15 MPH  
SHIFTING TO THE WEST EARLY IN THE MORNING. CHANCE OF SNOW  
60 PERCENT.    
SUNDAY
 
PARTLY CLOUDY. HIGHS 17 TO 23. WEST WINDS AROUND  
15 MPH.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLOUDY WITH SCATTERED SNOW  
SHOWERS. LOWS 9 TO 15. SOUTHWEST WINDS 15 TO 20 MPH. CHANCE OF  
SNOW 30 PERCENT.    
MONDAY
 
BREEZY. CLOUDY WITH SCATTERED SNOW SHOWERS. SNOW  
ACCUMULATION OF 1 TO 2 INCHES. HIGHS 21 TO 27. SOUTHWEST WINDS  
15 TO 20 MPH. CHANCE OF SNOW 50 PERCENT.    
MONDAY NIGHT
 
BREEZY. CLOUDY WITH A 50 PERCENT CHANCE OF SNOW.  
SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW ACCUMULATION 2 TO  
3 INCHES. LOWS 17 TO 23. SOUTHWEST WINDS 15 TO 20 MPH.    
TUESDAY
 
BREEZY. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. HIGHS 26 TO 32.    
TUESDAY NIGHT
 
PARTLY CLOUDY WITH A 40 PERCENT CHANCE OF SNOW.  
LOWS 16 TO 22.    
WEDNESDAY
 
BREEZY. SNOW LIKELY. HIGHS 25 TO 31. CHANCE OF SNOW  
70 PERCENT.    
WEDNESDAY NIGHT
 
COLDER, CLOUDY. SNOW LIKELY IN THE EVENING,  
THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS 2 TO 8. CHANCE OF SNOW  
60 PERCENT. WIND CHILL READINGS 11 BELOW TO 21 BELOW ZERO.    
THURSDAY
 
COLDER. MOSTLY CLOUDY IN THE MORNING THEN CLEARING.  
HIGHS 10 TO 16. WIND CHILL READINGS 11 BELOW TO 21 BELOW ZERO.    
THURSDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. LOWS 2 BELOW TO 4 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
AFTERNOON. HIGHS 12 TO 18.    
FRIDAY NIGHT
 
MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 2 BELOW TO 4 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 12 TO 18.  
 

 
 
WYZ014-171100-  
WIND RIVER MOUNTAINS WEST-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. ISOLATED SNOW SHOWERS EARLY IN THE  
MORNING. NEW SNOW ACCUMULATION UP TO 1 INCH. TOTAL SNOW  
ACCUMULATION UP TO 3 INCHES. LOWS 7 TO 13. NORTHEAST WINDS 15 TO  
20 MPH SHIFTING TO THE WEST EARLY IN THE MORNING. CHANCE OF SNOW  
90 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE IN THE  
MORNING THEN BECOMING MOSTLY SUNNY THEN BECOMING PARTLY CLOUDY  
LATE IN THE AFTERNOON. HIGHS 19 TO 25. NORTHWEST WINDS AROUND  
15 MPH.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 8 TO 14. NORTHWEST  
WINDS 15 TO 20 MPH.    
MONDAY
 
BREEZY. MOSTLY CLOUDY WITH SCATTERED SNOW SHOWERS.  
HIGHS 22 TO 30. WEST WINDS 15 TO 25 MPH. CHANCE OF SNOW  
30 PERCENT.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. LOWS 14 TO 20. WEST WINDS 15 TO 25 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 25 TO 33.    
TUESDAY NIGHT
 
PARTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW AFTER  
MIDNIGHT. LOWS 14 TO 20.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH CHANCE OF SNOW IN THE  
MORNING, THEN MOSTLY CLOUDY WITH SNOW LIKELY IN THE AFTERNOON.  
HIGHS 23 TO 33. TEMPERATURES FALLING INTO THE LOWER TEENS IN THE  
AFTERNOON. CHANCE OF SNOW 60 PERCENT. LOWEST WIND CHILL READINGS  
12 BELOW TO 22 BELOW ZERO IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
COLDER, CLOUDY. SNOW LIKELY IN THE EVENING,  
THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS ZERO TO 6 ABOVE. CHANCE  
OF SNOW 60 PERCENT. WIND CHILL READINGS 18 BELOW TO 28 BELOW  
ZERO.    
THURSDAY
 
COLDER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS  
8 TO 14. WIND CHILL READINGS 19 BELOW TO 29 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 5 BELOW TO 1 ABOVE ZERO.  
WIND CHILL READINGS 16 BELOW TO 26 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN THE  
AFTERNOON. HIGHS 12 TO 18. WIND CHILL READINGS 14 BELOW TO  
24 BELOW ZERO.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 4 BELOW TO 2 ABOVE ZERO. WIND CHILL READINGS 17 BELOW TO  
27 BELOW ZERO.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 11 TO 17. WIND CHILL READINGS  
17 BELOW TO 27 BELOW ZERO.  
 

 
 
WYZ015-171100-  
WIND RIVER MOUNTAINS EAST-  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. ISOLATED SNOW SHOWERS EARLY IN THE  
MORNING. NEW SNOW ACCUMULATION AROUND 1 INCH. TOTAL SNOW  
ACCUMULATION 2 TO 3 INCHES. LOWS 6 TO 14. EAST WINDS AROUND  
15 MPH LATE IN THE EVENING BECOMING WEST 15 TO 20 MPH EARLY IN  
THE MORNING. CHANCE OF SNOW NEAR 100 PERCENT.    
SUNDAY
 
BREEZY. PARTLY CLOUDY WITH ISOLATED SNOW SHOWERS IN THE  
MORNING, THEN MOSTLY SUNNY IN THE AFTERNOON. HIGHS 19 TO 29. WEST  
WINDS 15 TO 20 MPH. CHANCE OF SNOW 20 PERCENT.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY THEN BECOMING MOSTLY CLEAR  
LATE IN THE EVENING THEN BECOMING PARTLY CLOUDY. LOWS 12 TO 18.  
WEST WINDS 15 TO 25 MPH.    
MONDAY
 
WINDY. MOSTLY CLOUDY WITH SCATTERED SNOW SHOWERS. AREAS  
OF BLOWING SNOW. HIGHS 24 TO 34. WEST WINDS 20 TO 30 MPH. CHANCE  
OF SNOW 30 PERCENT.    
MONDAY NIGHT
 
WINDY. PARTLY CLOUDY IN THE EVENING THEN BECOMING  
MOSTLY CLOUDY. AREAS OF BLOWING SNOW IN THE EVENING. A 30 PERCENT  
CHANCE OF SNOW. LOWS 17 TO 23. WEST WINDS 20 TO 30 MPH.    
TUESDAY
 
WINDY. PARTLY CLOUDY. HIGHS 25 TO 35.    
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY. A 30 PERCENT CHANCE OF  
SNOW AFTER MIDNIGHT. LOWS 16 TO 24.    
WEDNESDAY
 
WINDY. PARTLY CLOUDY WITH CHANCE OF SNOW IN THE  
MORNING, THEN MOSTLY CLOUDY WITH SNOW LIKELY IN THE AFTERNOON.  
HIGHS 24 TO 34. TEMPERATURES FALLING INTO THE LOWER TEENS IN THE  
AFTERNOON. CHANCE OF SNOW 60 PERCENT. LOWEST WIND CHILL READINGS  
14 BELOW TO 24 BELOW ZERO IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CLOUDY. SNOW LIKELY IN  
THE EVENING, THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS 1 BELOW TO  
7 ABOVE ZERO. CHANCE OF SNOW 60 PERCENT. WIND CHILL READINGS  
19 BELOW TO 29 BELOW ZERO.    
THURSDAY
 
BREEZY, COLDER. MOSTLY CLOUDY WITH A 30 PERCENT  
CHANCE OF SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE  
AFTERNOON. HIGHS 8 TO 14. WIND CHILL READINGS 20 BELOW TO  
30 BELOW ZERO.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 2 BELOW TO 4 ABOVE ZERO.  
WIND CHILL READINGS 17 BELOW TO 27 BELOW ZERO.    
FRIDAY
 
BREEZY. PARTLY CLOUDY. A 20 PERCENT CHANCE OF SNOW IN  
THE AFTERNOON. HIGHS 12 TO 18. WIND CHILL READINGS 14 BELOW TO  
24 BELOW ZERO.    
FRIDAY NIGHT
 
PARTLY CLOUDY WITH A 20 PERCENT CHANCE OF SNOW.  
LOWS 4 BELOW TO 4 ABOVE ZERO. WIND CHILL READINGS 19 BELOW TO  
29 BELOW ZERO.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 10 TO 16. WIND CHILL READINGS  
19 BELOW TO 29 BELOW ZERO.  
 

 
 
WYZ019-171100-  
GREEN MOUNTAINS AND RATTLESNAKE RANGE-  
INCLUDING THE CITY OF JEFFREY CITY  
856 PM MST SAT DEC 16 2017  
   
..WINTER WEATHER ADVISORY IN EFFECT UNTIL 5 AM MST SUNDAY
 
 
   
REST OF TONIGHT
 
BREEZY. SNOW EARLY IN THE EVENING, THEN CHANCE  
OF SNOW AFTER MIDNIGHT. NEW SNOW ACCUMULATION UP TO 1 INCH. TOTAL  
SNOW ACCUMULATION UP TO 2 INCHES. LOWS 11 TO 17. NORTH WINDS  
15 TO 25 MPH. CHANCE OF SNOW 90 PERCENT.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY LATE  
IN THE MORNING THEN BECOMING MOSTLY SUNNY. HIGHS 25 TO 31.  
SOUTHWEST WINDS 15 TO 25 MPH IN THE LATE MORNING AND AFTERNOON.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR UNTIL EARLY MORNING THEN  
BECOMING PARTLY CLOUDY. LOWS 11 TO 17. SOUTHWEST WINDS 15 TO  
25 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 30 TO 36. SOUTHWEST WINDS  
15 TO 25 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 16 TO 22. SOUTHWEST  
WINDS 15 TO 20 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS 32 TO 38.    
TUESDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS 18 TO 26.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY WITH A 50 PERCENT CHANCE OF  
SNOW. HIGHS 34 TO 40. TEMPERATURES FALLING INTO THE LOWER 20S IN  
THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY. MUCH COLDER. CHANCE OF SNOW IN THE  
EVENING, THEN SNOW LIKELY AFTER MIDNIGHT. LOWS ZERO TO 6 ABOVE.  
CHANCE OF SNOW 60 PERCENT. WIND CHILL READINGS 14 BELOW TO  
24 BELOW ZERO.    
THURSDAY
 
BREEZY. MUCH COLDER. MOSTLY CLOUDY. A 30 PERCENT  
CHANCE OF SNOW IN THE MORNING. HIGHS 6 TO 12. WIND CHILL READINGS  
16 BELOW TO 26 BELOW ZERO.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY IN THE EVENING THEN  
CLEARING. LOWS 3 BELOW TO 11 BELOW ZERO. WIND CHILL READINGS  
21 BELOW TO 31 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS AROUND 15. LOWEST WIND CHILL  
READINGS 15 BELOW TO 25 BELOW ZERO IN THE MORNING.    
FRIDAY NIGHT
 
PARTLY CLOUDY IN THE EVENING THEN BECOMING MOSTLY  
CLOUDY. A 20 PERCENT CHANCE OF SNOW. LOWS 7 BELOW TO 1 ABOVE  
ZERO. WIND CHILL READINGS 19 BELOW TO 29 BELOW ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS AROUND 14. WIND CHILL READINGS 15 BELOW TO 25 BELOW  
ZERO.  
 

 
 
WYZ024-171100-  
SALT RIVER AND WYOMING RANGES-  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
CLOUDY. SNOW LIKELY EARLY IN THE EVENING, THEN  
CHANCE OF SNOW AFTER MIDNIGHT. NEW SNOW ACCUMULATION UP TO  
1 INCH. TOTAL SNOW ACCUMULATION UP TO 2 INCHES. LOWS 9 TO 15.  
CHANCE OF SNOW 60 PERCENT.    
SUNDAY
 
MOSTLY CLOUDY EARLY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 21 TO 27. NORTHWEST WINDS AROUND 15 MPH.    
SUNDAY NIGHT
 
BREEZY. PARTLY CLOUDY UNTIL EARLY MORNING THEN  
BECOMING MOSTLY CLOUDY. SCATTERED SNOW SHOWERS EARLY IN THE  
MORNING. LOWS 9 TO 15. WEST WINDS 15 TO 20 MPH. CHANCE OF SNOW  
40 PERCENT.    
MONDAY
 
BREEZY. CLOUDY WITH SCATTERED SNOW SHOWERS. HIGHS 25 TO  
31. WEST WINDS 15 TO 20 MPH. CHANCE OF SNOW 40 PERCENT.    
MONDAY NIGHT
 
BREEZY. MOSTLY CLOUDY WITH A 30 PERCENT CHANCE OF  
SNOW. LOWS 16 TO 22. WEST WINDS 15 TO 20 MPH.    
TUESDAY
 
PARTLY CLOUDY. HIGHS 30 TO 36.    
TUESDAY NIGHT
 
PARTLY CLOUDY. A 30 PERCENT CHANCE OF SNOW AFTER  
MIDNIGHT. LOWS 17 TO 23.    
WEDNESDAY
 
BREEZY. SNOW LIKELY. HIGHS 29 TO 35. CHANCE OF SNOW  
60 PERCENT.    
WEDNESDAY NIGHT
 
COLDER, CLOUDY. SNOW LIKELY IN THE EVENING,  
THEN CHANCE OF SNOW AFTER MIDNIGHT. LOWS 5 TO 11. CHANCE OF SNOW  
60 PERCENT.    
THURSDAY
 
COLDER. MOSTLY CLOUDY WITH A 20 PERCENT CHANCE OF  
SNOW IN THE MORNING, THEN PARTLY CLOUDY IN THE AFTERNOON. HIGHS  
12 TO 18.    
THURSDAY NIGHT
 
PARTLY CLOUDY. LOWS 1 BELOW TO 5 ABOVE ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 15 TO 21.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 1 TO 7.    
SATURDAY
 
PARTLY CLOUDY. HIGHS 15 TO 21.  
 

 
 
WYZ030-171100-  
EAST SWEETWATER COUNTY-  
INCLUDING THE CITY OF WAMSUTTER  
856 PM MST SAT DEC 16 2017  
   
REST OF TONIGHT
 
SNOW EARLY IN THE EVENING, THEN CHANCE OF SNOW  
AFTER MIDNIGHT. LITTLE OR NO NEW SNOW ACCUMULATION. LOWS 14 TO  
18. NORTH WINDS AROUND 15 MPH. CHANCE OF SNOW 80 PERCENT.    
SUNDAY
 
BREEZY. MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY EARLY  
IN THE AFTERNOON THEN BECOMING MOSTLY SUNNY. HIGHS 29 TO 33. WEST  
WINDS 15 TO 20 MPH IN THE LATE MORNING AND AFTERNOON.    
SUNDAY NIGHT
 
BREEZY. MOSTLY CLEAR UNTIL EARLY MORNING THEN  
BECOMING PARTLY CLOUDY. LOWS 14 TO 18. SOUTHWEST WINDS 15 TO  
20 MPH.    
MONDAY
 
BREEZY. PARTLY CLOUDY IN THE MORNING THEN BECOMING  
MOSTLY CLOUDY. HIGHS 33 TO 37. WEST WINDS 15 TO 25 MPH.    
MONDAY NIGHT
 
BREEZY. PARTLY CLOUDY. LOWS AROUND 20. WEST WINDS  
15 TO 25 MPH.    
TUESDAY
 
BREEZY. PARTLY CLOUDY. HIGHS NEAR 40.    
TUESDAY NIGHT
 
MOSTLY CLEAR IN THE EVENING THEN BECOMING PARTLY  
CLOUDY. LOWS 19 TO 23.    
WEDNESDAY
 
BREEZY. PARTLY CLOUDY. A 50 PERCENT CHANCE OF SNOW  
IN THE AFTERNOON. HIGHS NEAR 40. TEMPERATURES FALLING INTO THE  
LOWER 20S IN THE AFTERNOON.    
WEDNESDAY NIGHT
 
BREEZY, COLDER. CLOUDY WITH A 50 PERCENT  
CHANCE OF SNOW. LOWS 3 TO 7.    
THURSDAY
 
BREEZY. MUCH COLDER. MOSTLY CLOUDY. A 30 PERCENT  
CHANCE OF SNOW IN THE MORNING. HIGHS 9 TO 13. WIND CHILL READINGS  
12 BELOW TO 22 BELOW ZERO.    
THURSDAY NIGHT
 
COLDER. PARTLY CLOUDY IN THE EVENING THEN  
CLEARING. LOWS 2 BELOW TO 7 BELOW ZERO.    
FRIDAY
 
PARTLY CLOUDY. HIGHS 16 TO 20. LOWEST WIND CHILL  
READINGS 10 BELOW TO 20 BELOW ZERO IN THE MORNING.    
FRIDAY NIGHT
 
PARTLY CLOUDY. LOWS 2 BELOW TO 3 ABOVE ZERO.    
SATURDAY
 
MOSTLY CLOUDY IN THE MORNING THEN BECOMING PARTLY  
CLOUDY. HIGHS 15 TO 20.  
 

 
 
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