Alert archive / Wyoming / Special Weather Statements in 2021

Special Weather Statement, NWS Cheyenne, WY

August 26, 2021Albany County, Wyoming

NWS Cheyenne, WY issued this special weather statement at Aug 26, 2021, 5:27 PM MDT for Albany County, Wyoming. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 26, 2021, 5:27 PM MDT (23:27 UTC)
Expired: Aug 26, 2021, 6:00 PM MDT
In force: 33 min
Issued by: NWS Cheyenne, WY
Hail: 0.25 in
Wind: 40

County Albany County, WY

The radar

The Cheyenne radar (KCYS), 52 km from the middle of the area, began a volume at 23:30 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.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.5 hours before the alert went out and 242 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 852 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 1389 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 26, 5:25 PM MDT, 2 minutes earlier.

Area forecast discussion, Aug 26, 5:25 PM MDT, 2 minutes before

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Hazardous weather outlook, Aug 26, 2:55 PM MDT, 2 hours 32 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
255 PM MDT Thu Aug 26 2021

NEZ002-003-019>021-054-055-095-096-WYZ101>119-272100-
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-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
255 PM MDT Thu Aug 26 2021

This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.

.DAY ONE...THIS AFTERNOON AND TONIGHT

Isolated strong thunderstorms will be possible today across
portions of western Nebraska. Gusty outflow winds in the 40 to 50
mph are expected. Please report any strong wind or hail to the NWS
in Cheyenne or your local law enforcement.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

The probability for widespread hazardous weather is low. Gusty
winds and low humidity will result in Red Flag Warnings on Friday.
Dry weather will persist throughout the weekend.

.Spotter information statement...

Spotter activation will not be needed.

In the hours before

Special weather statement, Aug 26, 4:23 PM MDT, 1 hour 4 minutes before

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Local storm report, Aug 26, 4:31 PM MDT, 56 minutes before

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Local storm report, Aug 26, 4:33 PM MDT, 54 minutes before

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Local storm report, Aug 26, 4:45 PM MDT, 42 minutes before

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Local storm report, Aug 26, 4:53 PM MDT, 34 minutes before

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Special weather statement, Aug 26, 5:27 PM MDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 1:56 AM MDT	Fire Weather Watch	CYS		12 hr
Aug 26, 1:27 PM MDT	Red Flag Warning	CYS		31 hr
Aug 26, 2:39 PM MDT	Special Weather Statement	CYS	Carbon	36 min
Aug 26, 3:26 PM MDT	Special Weather Statement	CYS	Carbon	34 min
Aug 26, 3:39 PM MDT	Special Weather Statement	CYS	Platte	36 min
Aug 26, 4:08 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	37 min
Aug 26, 4:23 PM MDT	Special Weather Statement	CYS	Platte	37 min
Aug 26, 4:44 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Carbon	31 min

Nearby

Special Weather Statements in Wyoming, 2021 Every special weather statement in 2021

Sources

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