465
WWUS75 KCYS 181533
NPWCYS
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
933 AM MDT MON MAY 18 2026
WYZ102-182200-
/O.EXP.KCYS.FZ.W.0001.000000T0000Z-260518T1600Z/
/O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/
NIOBRARA COUNTY-
INCLUDING THE CITIES OF REDBIRD AND LUSK
933 AM MDT MON MAY 18 2026
..FREEZE WARNING WILL EXPIRE AT 10 AM MDT THIS MORNING
...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM
MDT TUESDAY...
* WHAT...FOR THE FREEZE WARNING TOMORROW NIGHT, SUB-FREEZING
TEMPERATURES AS LOW AS 22 POSSIBLE.
* WHERE...NIOBRARA COUNTY.
* WHEN...FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY.
* IMPACTS...FROST AND FREEZE CONDITIONS COULD KILL CROPS, OTHER
SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR
PLUMBING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.
NEZ019-095-096-WYZ101-107-108-182200-
/O.CON.KCYS.FZ.W.0002.260519T0200Z-260519T1600Z/
SCOTTS BLUFF COUNTY-NORTHERN SIOUX COUNTY-SOUTHERN SIOUX COUNTY-
CONVERSE COUNTY LOWER ELEVATIONS-EAST PLATTE COUNTY-GOSHEN COUNTY-
INCLUDING THE CITIES OF GERING, GLENROCK, WHEATLAND, SCOTTSBLUFF,
TORRINGTON, DEER CREEK, HARRISON, BILL, DOUGLAS, AGATE, AND
GUERNSEY
933 AM MDT MON MAY 18 2026
...FREEZE WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 10 AM
MDT TUESDAY...
* WHAT...SUB-FREEZING TEMPERATURES AS LOW AS 20 EXPECTED.
* WHERE...PORTIONS OF THE PANHANDLE OF NEBRASKA, AND EAST CENTRAL
AND SOUTHEAST WYOMING.
* WHEN...FROM 8 PM THIS EVENING TO 10 AM MDT TUESDAY.
* IMPACTS...FROST AND FREEZE CONDITIONS COULD KILL CROPS, OTHER
SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR
PLUMBING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.
WYZ104-105-109>111-182200-
/O.CON.KCYS.FZ.A.0001.260519T0300Z-260519T1600Z/
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-CENTRAL CARBON
COUNTY-NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
INCLUDING THE CITIES OF MEDICINE BOW, RAWLINS, ELK MOUNTAIN,
ARLINGTON, SHIRLEY BASIN, SEMINOE DAM, AND BAGGS
933 AM MDT MON MAY 18 2026
...FREEZE WATCH REMAINS IN EFFECT FROM 9 PM MDT THIS EVENING THROUGH
TUESDAY MORNING...
* WHAT...SUB-FREEZING TEMPERATURES AS LOW AS 15 POSSIBLE.
* WHERE...CENTRAL CARBON COUNTY, FERRIS/SEMINOE/SHIRLEY MOUNTAINS,
NORTH SNOWY RANGE FOOTHILLS, SHIRLEY BASIN, AND SOUTHWEST CARBON
COUNTY.
* WHEN...FROM 9 PM MDT THIS EVENING THROUGH TUESDAY MORNING.
* IMPACTS...FROST AND FREEZE CONDITIONS COULD KILL CROPS, OTHER
SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR
PLUMBING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.
NEZ002-003-020-021-054-055-WYZ106-113-115>119-182200-
/O.CON.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/
DAWES COUNTY-BOX BUTTE COUNTY-BANNER COUNTY-MORRILL COUNTY-
KIMBALL COUNTY-CHEYENNE COUNTY-CENTRAL LARAMIE RANGE AND
SOUTHWEST PLATTE COUNTY-UPPER NORTH PLATTE RIVER BASIN-LARAMIE
VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-CENTRAL
LARAMIE COUNTY-EAST LARAMIE COUNTY-
INCLUDING THE CITIES OF HARRISBURG, VEDAUWOO, FEDERAL,
HEMINGFORD, PUMPKIN VINE, LARAMIE, BORDEAUX, ALLIANCE, BROWNSON,
HORSE CREEK, BAYARD, SIDNEY, ENCAMPMENT, KIMBALL, CHEYENNE,
BRIDGEPORT, PINE BLUFFS, BUFORD, REDINGTON, ANGORA, CHADRON,
WHITAKER, BOSLER, CHADRON ST PARK, AND SARATOGA
933 AM MDT MON MAY 18 2026
...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY
MORNING...
* WHAT...SUB-FREEZING TEMPERATURES AS LOW AS 16 POSSIBLE.
* WHERE...PORTIONS OF PANHANDLE NEBRASKA AND SOUTH CENTRAL AND
SOUTHEAST WYOMING.
* WHEN...FROM LATE TONIGHT THROUGH TUESDAY MORNING.
* IMPACTS...FROST AND FREEZE CONDITIONS COULD KILL CROPS, OTHER
SENSITIVE VEGETATION AND POSSIBLY DAMAGE UNPROTECTED OUTDOOR
PLUMBING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE STEPS NOW TO PROTECT TENDER PLANTS FROM THE COLD.
CG
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