Alert archive / Wyoming / Freeze Warnings in 2026

Freeze Warning 4, NWS Cheyenne, WY

May 21, 2026Albany County, Carbon County, Laramie County, Wyoming

NWS Cheyenne, WY issued this freeze warning at May 21, 2026, 1:58 PM MDT for Albany County, Carbon County, Laramie County, Wyoming. It took effect at May 22, 2026, 12:00 AM MDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 21, 2026, 1:58 PM MDT (19:58 UTC)
In effect from
May 22, 2026, 12:00 AM MDT
Expired
May 22, 2026, 9:00 AM MDT
In force
9 hr
Issued by
NWS Cheyenne, WY

Counties Albany County, WY, Carbon County, WY, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 19:57 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this freeze warning went out at May 21, 11:56 AM MDT, 2 hours 2 minutes earlier.

Area forecast discussion, May 21, 11:56 AM MDT, 2 hours 2 minutes before
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In the hours before

Special weather statement, May 21, 12:07 PM MDT, 1 hour 51 minutes before
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Special weather statement, May 21, 12:52 PM MDT, 1 hour 6 minutes before
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Special weather statement, May 21, 1:29 PM MDT, 29 minutes before
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Special weather statement, May 21, 1:39 PM MDT, 19 minutes before
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Special weather statement, May 21, 1:50 PM MDT, 8 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
150 PM MDT Thu May 21 2026

NEZ095-096-WYZ102-108-212030-
North Sioux NE-South Sioux NE-Goshen County WY-Niobrara County WY-
150 PM MDT Thu May 21 2026

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL SIOUX...
SOUTHEASTERN NIOBRARA AND NORTHEASTERN GOSHEN COUNTIES THROUGH 230 PM
MDT...

At 150 PM MDT, Doppler radar was tracking a strong thunderstorm 9
miles southeast of Prairie Center, or 23 miles north of Torrington,
moving northeast at 15 mph.

HAZARD...Wind gusts up to 40 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

This storm will remain over mainly rural areas of west central Sioux,
southeastern Niobrara and northeastern Goshen Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4231 10405 4236 10425 4264 10410 4252 10381
TIME...MOT...LOC 1950Z 208DEG 11KT 4240 10410

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

Goatley

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 21, 12:07 PM MDTSpecial Weather StatementCYSGoshen23 min
May 21, 12:52 PM MDTSpecial Weather StatementCYSGoshen38 min
May 21, 1:29 PM MDTSpecial Weather StatementCYSGoshen31 min
May 21, 1:39 PM MDTSpecial Weather StatementCYSGoshen36 min
May 21, 2:02 PM MDTSpecial Weather StatementCYSGoshen43 min
May 21, 3:54 PM MDTSpecial Weather StatementCYSLaramie36 min
May 21, 4:22 PM MDTSnow Squall WarningCYSCarbon53 min
May 21, 1:50 PM MDTSpecial Weather StatementCYSSioux40 min
May 21, 3:01 PM MDTSpecial Weather StatementCYSSioux44 min
May 21, 3:08 PM MDTSpecial Weather StatementCYSScotts Bluff37 min
May 21, 3:09 PM MDTSpecial Weather StatementCYSDawes36 min
May 21, 3:22 PM MDTSpecial Weather StatementCYSScotts Bluff38 min
May 21, 3:30 PM MDTSevere Thunderstorm WarningCYSScotts Bluff, Sioux45 min
May 21, 3:37 PM MDTSevere Thunderstorm WarningCYSDawes38 min
May 21, 3:57 PM MDTSpecial Weather StatementCYSBanner33 min
May 21, 4:01 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball44 min
May 21, 4:14 PM MDTSpecial Weather StatementCYSDawes46 min
May 21, 4:24 PM MDTSpecial Weather StatementCYSScotts Bluff36 min
May 21, 4:41 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball30 min
May 21, 4:44 PM MDTTornado WarningCYSKimball26 min
May 21, 4:57 PM MDTSpecial Weather StatementCYSScotts Bluff48 min
May 21, 5:09 PM MDTSevere Thunderstorm WarningCYSBanner, Cheyenne, Kimball, Morrill51 min
May 21, 5:11 PM MDTSpecial Weather StatementCYSScotts Bluff49 min

Nearby

Freeze Warnings in Wyoming, 2026Every freeze warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.