Alert archive / Wyoming / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 95, NWS Cheyenne, WY

July 27, 2022Goshen County, Laramie County, Platte County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 27, 2022, 8:40 PM MDT for Goshen County, Laramie County, Platte County, Wyoming. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 27, 2022, 8:40 PM MDT (02:40 UTC)
Expired: Jul 27, 2022, 9:19 PM MDT
In force: 39 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Damage threat: Considerable
Hail: 1.0 in
Wind: 70.0 mph

Counties Goshen County, WY, Laramie County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 78 km from the middle of the area, began a volume at 02:39 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 00:00Z, 2.7 hours before the alert went out and 348 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: 12 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 2077 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 302 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 27, 7:45 PM MDT, 55 minutes earlier.

Area forecast discussion, Jul 27, 7:45 PM MDT, 55 minutes before

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Hazardous weather outlook, Jul 27, 1:46 PM MDT, 6 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
146 PM MDT Wed Jul 27 2022

NEZ002-003-019>021-054-055-095-096-WYZ101>119-282000-
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-
146 PM MDT Wed Jul 27 2022

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
Thunderstorms are likely especially in far southeast Wyoming and
southwestern Nebraska this afternoon and evening. Large hail and
gusty winds are the most likely concerns. The thunderstorm
activity should generally favor areas along and south of I80
before ending by 9pm or so.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
Another round of showers and thunderstorms are possible on
Thursday afternoon, especially over the higher terrain of
southeast Wyoming. Small hail and gusty winds, along with heavy
downpours will be the primary concern. Drier weather will move in
for Friday and the weekend although a weak afternoon storm cannot
be ruled out in the higher terrain.

.Spotter information statement...
Please report any hail over 1" in diameter or damaging wind gusts
to your local NWS office.

In the hours before

Special weather statement, Jul 27, 7:28 PM MDT, 1 hour 12 minutes before

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Special weather statement, Jul 27, 7:55 PM MDT, 45 minutes before

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Local storm report, Jul 27, 8:10 PM MDT, 30 minutes before

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Local storm report, Jul 27, 8:21 PM MDT, 19 minutes before

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Special weather statement, Jul 27, 8:31 PM MDT, 9 minutes before

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Local storm report, Jul 27, 8:33 PM MDT, 7 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
Jul 27, 6:09 PM MDT	Special Weather Statement	CYS	Laramie	36 min
Jul 27, 6:28 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	47 min
Jul 27, 7:07 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	38 min
Jul 27, 7:28 PM MDT	Special Weather Statement	CYS	Platte	32 min
Jul 27, 7:55 PM MDT	Special Weather Statement	CYS	Platte	35 min
Jul 27, 8:03 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	42 min
Jul 27, 8:31 PM MDT	Special Weather Statement	CYS	Goshen	29 min
Jul 27, 8:49 PM MDT	Special Weather Statement	CYS	Goshen	26 min
Jul 27, 9:17 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Goshen, Laramie	43 min
Jul 27, 9:57 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	30 min
Jul 27, 10:36 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	34 min
Jul 28, 1:00 AM MDT	Special Weather Statement	CYS	Carbon	45 min
Jul 28, 2:14 AM MDT	Flash Flood Watch	CYS	Albany, Carbon	19 hr
Jul 28, 3:29 AM MDT	Special Weather Statement	CYS	Albany	46 min
Jul 28, 4:41 AM MDT	Special Weather Statement	CYS	Laramie	49 min
Jul 28, 5:35 AM MDT	Special Weather Statement	CYS	Laramie	40 min
Jul 28, 1:45 PM MDT	Flash Flood Warning	CYS	Albany, Carbon	3 hr
Jul 28, 2:47 PM MDT	Areal Flood Advisory	CYS	Carbon	3 hr
Jul 28, 4:09 PM MDT	Special Weather Statement	CYS	Albany	51 min
Jul 28, 4:16 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Laramie, Platte	44 min
Jul 28, 5:00 PM MDT	Special Weather Statement	CYS	Albany	60 min
Jul 28, 5:23 PM MDT	Special Weather Statement	CYS	Albany	52 min
Jul 28, 5:27 PM MDT	Severe Thunderstorm Warning	CYS	Albany	48 min
Jul 28, 5:50 PM MDT	Special Weather Statement	CYS		40 min
Jul 27, 9:32 PM MDT	Special Weather Statement	CYS	Scotts Bluff	28 min
Jul 27, 9:47 PM MDT	Severe Thunderstorm Warning	CYS	Scotts Bluff	43 min
Jul 27, 10:16 PM MDT	Areal Flood Advisory	CYS	Scotts Bluff	2 hr
Jul 27, 10:21 PM MDT	Special Weather Statement	CYS	Banner	39 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2022 Every severe thunderstorm warning in 2022

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.