Alert archive / Wyoming / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 281, NWS Cheyenne, WY

July 14, 2023Goshen County, Platte County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 14, 2023, 3:33 PM MDT for Goshen County, Platte County, Wyoming. It was in force for 27 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 14, 2023, 3:33 PM MDT (21:33 UTC)
Expired: Jul 14, 2023, 4:00 PM MDT
In force: 27 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Goshen County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 107 km from the middle of the area, began a volume at 21:33 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, 9.6 hours before the alert went out and 355 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: 1423 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 1385 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

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 14, 3:01 PM MDT, 32 minutes earlier.

Area forecast discussion, Jul 14, 3:01 PM MDT, 32 minutes before

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In the hours before

Local storm report, Jul 14, 2:43 PM MDT, 50 minutes before

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Special weather statement, Jul 14, 2:53 PM MDT, 40 minutes before

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Local storm report, Jul 14, 2:58 PM MDT, 35 minutes before

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Local storm report, Jul 14, 3:13 PM MDT, 20 minutes before

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Special weather statement, Jul 14, 3:18 PM MDT, 15 minutes before

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Special weather statement, Jul 14, 3:29 PM MDT, 4 minutes before

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      <p id="message2">
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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 14, 1:20 PM MDT	Special Weather Statement	CYS	Platte	40 min
Jul 14, 1:57 PM MDT	Special Weather Statement	CYS	Platte	33 min
Jul 14, 2:07 PM MDT	Special Weather Statement	CYS	Converse	38 min
Jul 14, 2:15 PM MDT	Severe Thunderstorm Warning	CYS	Converse	30 min
Jul 14, 2:22 PM MDT	Special Weather Statement	CYS	Laramie	38 min
Jul 14, 2:33 PM MDT	Special Weather Statement	CYS	Platte	27 min
Jul 14, 2:48 PM MDT	Severe Thunderstorm Warning	CYS	Platte	42 min
Jul 14, 2:53 PM MDT	Special Weather Statement	CYS	Converse	37 min
Jul 14, 3:18 PM MDT	Special Weather Statement	CYS	Platte	27 min
Jul 14, 3:29 PM MDT	Special Weather Statement	CYS	Laramie	31 min
Jul 14, 4:00 PM MDT	Special Weather Statement	CYS	Laramie	30 min
Jul 14, 4:02 PM MDT	Special Weather Statement	CYS	Goshen	28 min
Jul 14, 4:23 PM MDT	Special Weather Statement	CYS	Laramie	37 min
Jul 14, 4:27 PM MDT	Special Weather Statement	CYS	Converse	33 min
Jul 14, 4:55 PM MDT	Severe Thunderstorm Warning	CYS	Converse	20 min
Jul 14, 5:32 PM MDT	Special Weather Statement	CYS	Laramie	28 min
Jul 14, 5:41 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	34 min
Jul 13, 11:14 PM MDT	Special Weather Statement	CYS	Morrill	31 min
Jul 13, 11:26 PM MDT	Special Weather Statement	CYS	Morrill	19 min
Jul 13, 11:44 PM MDT	Severe Thunderstorm Warning	CYS	Morrill, Scotts Bluff	31 min
Jul 13, 11:51 PM MDT	Special Weather Statement	CYS	Morrill	24 min
Jul 13, 11:59 PM MDT	Special Weather Statement	CYS	Morrill	31 min
Jul 14, 12:16 AM MDT	Special Weather Statement	CYS	Morrill	29 min
Jul 14, 12:17 AM MDT	Severe Thunderstorm Warning	CYS	Morrill, Scotts Bluff	28 min
Jul 14, 3:42 AM MDT	Special Weather Statement	CYS	Dawes	33 min
Jul 14, 4:16 AM MDT	Special Weather Statement	CYS	Box Butte	29 min
Jul 14, 6:44 AM MDT	Special Weather Statement	CYS	Box Butte	31 min
Jul 14, 3:39 PM MDT	Special Weather Statement	CYS	Kimball	36 min
Jul 14, 4:17 PM MDT	Special Weather Statement	CYS	Kimball	28 min
Jul 14, 5:11 PM MDT	Special Weather Statement	CYS	Cheyenne	34 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2023 Every severe thunderstorm warning in 2023

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.