242
WWUS45 KCYS 180731
WSWCYS
URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
131 AM MDT MON MAY 18 2026
WYZ103-114-182200-
/O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/
NORTH LARAMIE RANGE-SNOWY RANGE-
INCLUDING THE CITIES OF ALBANY, GARRETT, AND CENTENNIAL
131 AM MDT MON MAY 18 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW. TOTAL SNOW ACCUMULATIONS 10 TO 20 INCHES
EXPECTED WITH LOCALLY HIGHER AMOUNTS POSSIBLE. WINDS COULD GUST AS
HIGH AS 30 TO 40 MPH WITH PERIODS OF BLOWING AND DRIFTING SNOW,
ESPECIALLY ABOVE 8500 FEET.
* WHERE...SNOWY RANGE AND NORTH LARAMIE RANGE.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...HEAVY WET SNOW. ROADS, AND ESPECIALLY BRIDGES, WILL
LIKELY BECOME SLICK AND HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
WYZ104-110-182200-
/O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-NORTH SNOWY RANGE FOOTHILLS-
INCLUDING THE CITIES OF SEMINOE DAM, ELK MOUNTAIN, AND ARLINGTON
131 AM MDT MON MAY 18 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW AND PERIODS OF DRIFTING SNOW. TOTAL SNOW
ACCUMULATIONS 6 TO 12 INCHES WITH HIGHER AMOUNTS NEAR THE
MOUNTAINS. WINDS COULD GUST AS HIGH AS 35 TO 45 MPH WITH PERIODS
OF BLOWING AND DRIFTING SNOW.
* WHERE...NORTH SNOWY RANGE FOOTHILLS INCLUDING ARLINGTON AND ELK
MOUNTAIN ALONG INTERSTATE 80, AND FERRIS/SEMINOE/SHIRLEY MOUNTAINS.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS. SCATTERED POWER OUTAGES
POSSIBLE DUE TO HEAVY WET SNOW ON TREES AND POWERLINES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
PERSONS SHOULD DELAY ALL TRAVEL IF POSSIBLE. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION AND BE PREPARED FOR SUDDEN
CHANGES IN VISIBILITY. LEAVE PLENTY OF ROOM BETWEEN YOU AND THE
MOTORIST AHEAD OF YOU, AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. AVOID SUDDEN BRAKING OR ACCELERATION, AND BE ESPECIALLY
CAUTIOUS ON HILLS OR WHEN MAKING TURNS. MAKE SURE YOUR CAR IS
WINTERIZED AND IN GOOD WORKING ORDER.
WYZ109-182200-
/O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/
CENTRAL CARBON COUNTY-
INCLUDING THE CITIES OF RAWLINS
131 AM MDT MON MAY 18 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW AND PERIODS OF BLOWING SNOW. TOTAL SNOW
ACCUMULATIONS 5 TO 10 INCHES EXPECTED WITH LOCALLY HIGHER AMOUNTS
NEAR THE MOUNTAINS. WINDS COULD GUST AS HIGH AS 45 MPH.
* WHERE...CENTRAL CARBON COUNTY.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...VISIBILITIES MAY DROP BELOW 1/4 MILE DUE TO FALLING AND
BLOWING SNOW.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD DELAY ALL TRAVEL IF POSSIBLE. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION AND BE PREPARED FOR SUDDEN
CHANGES IN VISIBILITY. LEAVE PLENTY OF ROOM BETWEEN YOU AND THE
MOTORIST AHEAD OF YOU, AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. AVOID SUDDEN BRAKING OR ACCELERATION, AND BE ESPECIALLY
CAUTIOUS ON HILLS OR WHEN MAKING TURNS. MAKE SURE YOUR CAR IS
WINTERIZED AND IN GOOD WORKING ORDER.
WYZ112-182200-
/O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/
SIERRA MADRE RANGE-
131 AM MDT MON MAY 18 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW EXPECTED. TOTAL SNOW ACCUMULATION 8 TO 16
INCHES, MAINLY ON THE EASTERN SIDE OF THE RANGE. WINDS GUSTING AS
HIGH AS 50 MPH WITH PERIODS OF BLOWING AND DRIFTING SNOW.
* WHERE...SIERRA MADRE RANGE.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT TO IMPOSSIBLE. THE
HAZARDOUS CONDITIONS COULD IMPACT THE MONDAY MORNING AND EVENING
COMMUTES. STRONG WINDS COULD CAUSE TREE DAMAGE.
* ADDITIONAL DETAILS...NORTH TO NORTHEAST FACING SLOPES AND RIDGES
WILL SEE THE HIGHEST ACCUMULATIONS, WITH ACCUMULATIONS MUCH LOWER
ON THE WESTERN SIDE OF THE RANGE NEAR DIXON AND BAGGS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU MUST TRAVEL, KEEP AN EXTRA FLASHLIGHT, FOOD, AND WATER IN
YOUR VEHICLE IN CASE OF AN EMERGENCY. THE LATEST ROAD CONDITIONS FOR
THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY CALLING 5 1 1.
WYZ116-182200-
/O.CON.KCYS.WS.W.0007.000000T0000Z-260519T0000Z/
SOUTH LARAMIE RANGE-
INCLUDING THE CITIES OF PUMPKIN VINE, BUFORD, AND VEDAUWOO
131 AM MDT MON MAY 18 2026
...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...HEAVY SNOW. TOTAL SNOW ACCUMULATIONS 7 TO 14 INCHES
EXPECTED WITH LOCALLY HIGHER AMOUNTS. WINDS COULD GUST AS HIGH AS
30 TO 40 MPH WITH SOME DRIFTING SNOW EXPECTED.
* WHERE...SOUTH LARAMIE RANGE INCLUDING THE INTERSTATE 80 SUMMIT
BETWEEN CHEYENNE AND LARAMIE.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...ROADS, AND ESPECIALLY BRIDGES AND OVERPASSES, WILL
LIKELY BECOME SLICK AND HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PERSONS SHOULD DELAY ALL TRAVEL IF POSSIBLE. IF TRAVEL IS ABSOLUTELY
NECESSARY, DRIVE WITH EXTREME CAUTION AND BE PREPARED FOR SUDDEN
CHANGES IN VISIBILITY. LEAVE PLENTY OF ROOM BETWEEN YOU AND THE
MOTORIST AHEAD OF YOU, AND ALLOW EXTRA TIME TO REACH YOUR
DESTINATION. AVOID SUDDEN BRAKING OR ACCELERATION, AND BE ESPECIALLY
CAUTIOUS ON HILLS OR WHEN MAKING TURNS. MAKE SURE YOUR CAR IS
WINTERIZED AND IN GOOD WORKING ORDER.
WYZ101-105-106-117-182200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/
CONVERSE COUNTY LOWER ELEVATIONS-SHIRLEY BASIN-CENTRAL LARAMIE
RANGE AND SOUTHWEST PLATTE COUNTY-SOUTH LARAMIE RANGE FOOTHILLS-
INCLUDING THE CITIES OF BORDEAUX, GLENROCK, HORSE CREEK,
WHITAKER, MEDICINE BOW, SHIRLEY BASIN, BILL, DEER CREEK, FEDERAL,
AND DOUGLAS
131 AM MDT MON MAY 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS 2 TO 6 INCHES.
WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...CONVERSE COUNTY LOWER ELEVATIONS, SHIRLEY BASIN, CENTRAL
LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, AND SOUTH LARAMIE RANGE
FOOTHILLS.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE MONDAY MORNING AND EVENING COMMUTES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE PREPARED FOR SLIPPERY ROADS. SLOW DOWN AND USE CAUTION WHILE
DRIVING. IF YOU ARE GOING OUTSIDE, WATCH YOUR FIRST FEW STEPS TAKEN
ON STAIRS, SIDEWALKS, AND DRIVEWAYS. THESE SURFACES COULD BE ICY AND
SLIPPERY, INCREASING YOUR RISK OF A FALL AND INJURY.
WYZ111-182200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/
SOUTHWEST CARBON COUNTY-
INCLUDING THE CITIES OF BAGGS
131 AM MDT MON MAY 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...SNOW AND PERIODS OF BLOWING SNOW. TOTAL SNOW ACCUMULATIONS
3 TO 6 INCHES, LOCALLY HEAVIER IN THE NORTHERN EXTENT OF THE ZONE.
WINDS GUSTING AS HIGH AS 50 MPH.
* WHERE...SOUTHWEST CARBON COUNTY.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE MONDAY MORNING AND EVENING COMMUTES. STRONG WINDS
COULD CAUSE TREE DAMAGE.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY
CALLING 5 1 1.
WYZ115-182200-
/O.CON.KCYS.WW.Y.0017.000000T0000Z-260519T0000Z/
LARAMIE VALLEY-
INCLUDING THE CITIES OF LARAMIE AND BOSLER
131 AM MDT MON MAY 18 2026
...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 6 PM MDT THIS
EVENING...
* WHAT...SNOW AND BLOWING SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS
BETWEEN 2 TO 6 INCHES. WINDS GUSTING AS HIGH AS 35 MPH.
* WHERE...LARAMIE VALLEY.
* WHEN...UNTIL 6 PM MDT THIS EVENING.
* IMPACTS...TRAVEL COULD BE VERY DIFFICULT. THE HAZARDOUS CONDITIONS
COULD IMPACT THE MONDAY MORNING AND EVENING COMMUTES.
* ADDITIONAL DETAILS...PORTIONS OF THE LARAMIE VALLEY INCLUDING
LARAMIE ITSELF COULD SEE AMOUNTS ON THE LOWER END DUE TO WESTERLY
WINDS, BUT PORTIONS OF THE VALLEY INCLUDING I-80 MAY SEE ON THE
HIGHER END OF THESE AMOUNTS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SLOW DOWN AND USE CAUTION WHILE TRAVELING. THE LATEST ROAD
CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN BE OBTAINED BY
CALLING 5 1 1.
TRUDEL
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