Alert archive / Wyoming / Special Weather Statements in 2021
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at May 22, 2021, 3:46 PM MDT for Laramie County, Wyoming. It was in force for 44 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
- May 22, 2021, 3:46 PM MDT (21:46 UTC)
- Expired
- May 22, 2021, 4:30 PM MDT
- In force
- 44 min
- Issued by
- NWS Cheyenne, WY
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 34 km from the middle of the area, began a volume at 21:50 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, 9.8 hours before the alert went out and 191 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1528 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>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 May 22, 3:28 PM MDT, 18 minutes earlier.
Area forecast discussion, May 22, 3:28 PM MDT, 18 minutes before
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</html>Hazardous weather outlook, May 22, 3:27 PM MDT, 19 minutes before
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</html>In the hours before
Special weather statement, May 22, 12:03 PM MDT, 3 hours 43 minutes before
Special Weather Statement National Weather Service Cheyenne WY 1203 PM MDT Sat May 22 2021 NEZ002-003-019>021-054-055-095-096-222000- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Including the cities of Chadron, Chadron St Park, Alliance, Scottsbluff, Gering, Harrisburg, Angora, Bridgeport, Bayard, Redington, Kimball, Sidney, Brownson, Harrison, and Agate 1203 PM MDT Sat May 22 2021 Patchy dense fog has formed throughout the Nebraska panhandle. Patches of visibilities less than a quarter mile are likely until 2 PM MDT. Maintain caution if traveling by keeping distance between vehicles and turning your headlights on. LK
Special weather statement, May 22, 3:46 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 7:07 PM MDT | Special Weather Statement | CYS | Goshen | 38 min |
| May 22, 5:36 PM MDT | High Wind Warning | CYS | Albany, Carbon | 3 hr |
Nearby
Special Weather Statements in Wyoming, 2021Every 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.