Alert archive / Wyoming / Special Weather Statements in 2017
Special Weather Statement, NWS Cheyenne, WY
NWS Cheyenne, WY issued this special weather statement at Jun 27, 2017, 1:13 PM MDT for Laramie County, Wyoming. It was in force for 47 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, 2017, 1:13 PM MDT (19:13 UTC)
- Expired
- Jun 27, 2017, 2:00 PM MDT
- In force
- 47 min
- Issued by
- NWS Cheyenne, WY
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 56 km from the middle of the area, began a volume at 19:16 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 (KDEN), launched 12:00Z, 7.2 hours before the alert went out and 193 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
- 34 J/kg
- Mixed-layer CIN
- -526 J/kg
- Mixed-layer LCL
- 2742 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 95 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, 1:02 PM MDT, 11 minutes earlier.
Area forecast discussion, Jun 27, 1:02 PM MDT, 11 minutes before
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</html>Hazardous weather outlook, Jun 27, 3:35 AM MDT, 9 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 335 AM MDT Tue Jun 27 2017 WYZ101>119-280945- 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- 335 AM MDT Tue Jun 27 2017 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Widely scattered to scattered thunderstorms will develop this afternoon with the greatest coverage over Converse and Niobrara Counties. Gusty winds are possible with these storms but widespread severe weather is not expected. Windy conditions will also develop west of Interstate 25 this afternoon. Gusts of 40 to 50 mph are possible in these areas. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed. NEZ002-003-019>021-054-055-095-096-280945- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux- 335 AM MDT Tue Jun 27 2017 This hazardous weather outlook is for portions of western Nebraska. .DAY ONE...TODAY AND TONIGHT Widely scattered to scattered showers and thunderstorms will develop this afternoon. A few of these storms will be strong with small hail and gusty winds but widespread severe weather is not expected at this time. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Special weather statement, Jun 27, 1:13 PM MDT, 0 minutes before
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<div class="status" id="status">Temporary Notice</div>
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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, 12:47 PM MDT | Red Flag Warning | CYS | 6 hr | |
| Jun 27, 2:40 PM MDT | Special Weather Statement | CYS | Converse | 50 min |
| Jun 27, 3:14 PM MDT | Special Weather Statement | CYS | Niobrara | 46 min |
| Jun 27, 3:35 PM MDT | Special Weather Statement | CYS | Niobrara | 40 min |
| Jun 27, 3:57 PM MDT | Special Weather Statement | CYS | Niobrara | 48 min |
| Jun 27, 4:54 PM MDT | Special Weather Statement | CYS | Converse | 51 min |
| Jun 27, 5:24 PM MDT | Special Weather Statement | CYS | Albany | 51 min |
| Jun 27, 5:40 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Laramie, Platte | 42 min |
| Jun 27, 1:55 PM MDT | Special Weather Statement | CYS | Banner | 50 min |
| Jun 27, 1:58 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 47 min |
| Jun 27, 3:10 PM MDT | Special Weather Statement | CYS | Kimball | 50 min |
| Jun 27, 3:20 PM MDT | Special Weather Statement | CYS | Kimball | 40 min |
| Jun 27, 3:23 PM MDT | Special Weather Statement | CYS | Box Butte | 52 min |
| Jun 27, 3:24 PM MDT | Special Weather Statement | CYS | Sioux | 51 min |
| Jun 27, 3:40 PM MDT | Special Weather Statement | CYS | Dawes | 50 min |
| Jun 27, 4:05 PM MDT | Special Weather Statement | CYS | Cheyenne | 40 min |
| Jun 27, 4:08 PM MDT | Special Weather Statement | CYS | Dawes | 52 min |
| Jun 27, 4:19 PM MDT | Special Weather Statement | CYS | Dawes | 41 min |
| Jun 27, 4:33 PM MDT | Special Weather Statement | CYS | Morrill | 27 min |
| Jun 27, 4:46 PM MDT | Special Weather Statement | CYS | Dawes | 44 min |
| Jun 27, 4:51 PM MDT | Special Weather Statement | CYS | Cheyenne | 39 min |
| Jun 27, 4:59 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 16 min |
Nearby
Special Weather Statements in Wyoming, 2017Every special weather statement in 2017
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.