Alert archive / Wyoming / Special Weather Statements in 2021
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Jun 27, 2021, 1:12 PM MDT for Goshen 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
- Jun 27, 2021, 1:12 PM MDT (19:12 UTC)
- Expired
- Jun 27, 2021, 1:45 PM MDT
- In force
- 33 min
- Issued by
- NWS Cheyenne, WY
County Goshen County, WY
The radar
The Cheyenne radar (KCYS), 128 km from the middle of the area, began a volume at 19:12 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 7.2 hours before the alert went out and 309 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
- 11 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1495 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 8 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 Jun 27, 11:54 AM MDT, 1 hour 18 minutes earlier.
Area forecast discussion, Jun 27, 11:54 AM MDT, 1 hour 18 minutes before
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</html>Hazardous weather outlook, Jun 27, 5:15 AM MDT, 7 hours 57 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 515 AM MDT Sun Jun 27 2021 NEZ002-003-019>021-054-055-095-096-WYZ101>111-113-115>119-281115- 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- Upper North Platte River Basin-Laramie Valley-South Laramie Range- South Laramie Range Foothills-Central Laramie County- East Laramie County- 515 AM MDT Sun Jun 27 2021 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Scattered to numerous showers and a few thunderstorms are expected across much of the area today and tonight. Some of this activity may produce brief wind gusts in excess of 50 MPH. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Chances for showers and thunderstorms will continue through Monday. .Spotter information statement... Spotter activation will not be needed. However, please report any significant weather to the National Weather Service in Cheyenne. WYZ112-114-281115- Sierra Madre Range-Snowy Range- 515 AM MDT Sun Jun 27 2021 This hazardous weather outlook is for portions of south central Wyoming. .DAY ONE...TODAY AND TONIGHT Scattered to numerous showers and a few thunderstorms are expected in the high country today and tonight. Avoid recently burned areas due to the risk for flash flooding or debris flows in heavy rain. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Chances for showers and thunderstorms will continue through Monday. .Spotter information statement... Spotter activation will not be needed. However, please report any significant weather to the National Weather Service in Cheyenne.
In the hours before
Local storm report, Jun 27, 11:36 AM MDT, 1 hour 36 minutes before
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</html>Special weather statement, Jun 27, 12:40 PM MDT, 32 minutes before
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</html>Special weather statement, Jun 27, 12:42 PM MDT, 30 minutes before
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</html>Special weather statement, Jun 27, 1:12 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 |
|---|---|---|---|---|
| Jun 27, 11:50 AM MDT | Special Weather Statement | CYS | Scotts Bluff | 25 min |
| Jun 27, 12:40 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 35 min |
| Jun 27, 12:42 PM MDT | Special Weather Statement | CYS | Kimball | 33 min |
| Jun 27, 1:27 PM MDT | Special Weather Statement | CYS | Dawes | 33 min |
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.