290
WWUS75 KCYS 171822
NPWCYS
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1222 PM MDT SUN MAY 17 2026
WYZ102-181200-
/O.NEW.KCYS.FZ.W.0001.260518T1100Z-260518T1600Z/
/O.NEW.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/
NIOBRARA COUNTY-
INCLUDING THE CITIES OF LUSK AND REDBIRD
1222 PM MDT SUN MAY 17 2026
..FREEZE WARNING IN EFFECT FROM 5 AM TO 10 AM MDT MONDAY
...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING...
* WHAT...FOR THE FREEZE WARNING TONIGHT, SUB-FREEZING TEMPERATURES
AS LOW AS 26 EXPECTED. FOR THE FREEZE WATCH TOMORROW NIGHT,
SUB-FREEZING TEMPERATURES AS LOW AS 22 POSSIBLE.
* WHERE...NIOBRARA COUNTY.
* WHEN...FOR THE FREEZE WARNING, FROM 5 AM TO 10 AM MDT MONDAY. FOR
THE FREEZE WATCH, FROM LATE MONDAY NIGHT 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.
WYZ104-105-109>111-181200-
/O.NEW.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 BAGGS, SEMINOE DAM, MEDICINE BOW, ELK
MOUNTAIN, ARLINGTON, RAWLINS, AND SHIRLEY BASIN
1222 PM MDT SUN MAY 17 2026
...FREEZE WATCH IN EFFECT FROM MONDAY 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 MONDAY 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.
NEZ002-003-019>021-054-055-095-096-WYZ101-106>108-113-115>119-181200-
/O.NEW.KCYS.FZ.A.0001.260519T0600Z-260519T1600Z/
DAWES COUNTY-BOX BUTTE COUNTY-SCOTTS BLUFF COUNTY-BANNER COUNTY-
MORRILL COUNTY-KIMBALL COUNTY-CHEYENNE COUNTY-NORTHERN SIOUX
COUNTY-SOUTHERN SIOUX COUNTY-CONVERSE COUNTY LOWER ELEVATIONS-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-EAST PLATTE
COUNTY-GOSHEN 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 FEDERAL, BORDEAUX, TORRINGTON, CHADRON,
AGATE, HEMINGFORD, WHITAKER, SCOTTSBLUFF, PUMPKIN VINE, GLENROCK,
GERING, PINE BLUFFS, BAYARD, BROWNSON, BUFORD, BRIDGEPORT,
LARAMIE, BILL, HORSE CREEK, VEDAUWOO, KIMBALL, HARRISON,
SARATOGA, CHADRON ST PARK, ALLIANCE, ENCAMPMENT, WHEATLAND,
BOSLER, REDINGTON, CHEYENNE, DEER CREEK, DOUGLAS, ANGORA,
HARRISBURG, GUERNSEY, AND SIDNEY
1222 PM MDT SUN MAY 17 2026
...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY
MORNING...
* WHAT...SUB-FREEZING TEMPERATURES AS LOW AS 18 POSSIBLE.
* WHERE...PORTIONS OF THE PANHANDLE OF NEBRASKA AND EAST CENTRAL,
SOUTH CENTRAL, AND SOUTHEAST WYOMING.
* WHEN...FROM LATE MONDAY NIGHT 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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