Alert archive / Wyoming / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 285, NWS Cheyenne, WY

July 15, 2023Laramie County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 15, 2023, 3:43 PM MDT for Laramie County, Wyoming. It was in force for 32 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 15, 2023, 3:43 PM MDT (21:43 UTC)
Expired: Jul 15, 2023, 4:15 PM MDT
In force: 32 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Laramie County, WY

The radar

The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 21:47 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.

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 15, 3:18 PM MDT, 25 minutes earlier.

Area forecast discussion, Jul 15, 3:18 PM MDT, 25 minutes before

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Hazardous weather outlook, Jul 15, 2:57 PM MDT, 46 minutes before

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In the hours before

Special weather statement, Jul 15, 1:41 PM MDT, 2 hours 2 minutes before

Special Weather Statement
National Weather Service Cheyenne WY
141 PM MDT Sat Jul 15 2023

WYZ117>119-152015-
Central Laramie County WY-South Laramie Range Foothills WY-
East Laramie County WY-
141 PM MDT Sat Jul 15 2023

...A strong thunderstorm will impact portions of south central
Laramie County through 215 PM MDT...

At 140 PM MDT, Doppler radar was tracking a strong thunderstorm over
Frontier Park, or over Cheyenne, moving southeast at 15 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Cheyenne, South Greeley, Ranchettes, Warren AFB, Frontier Park, North
Cheyenne, Warren Af Base, Fox Farm-College and South Greeley High.

This includes the following highways...
 Interstate 25 in Wyoming between mile markers 4 and 18.
 Interstate 80 in Wyoming between mile markers 356 and 372.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4118 10498 4127 10480 4101 10438 4100 10486
TIME...MOT...LOC 1940Z 321DEG 14KT 4116 10483

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

Dewey

Local storm report, Jul 15, 2:16 PM MDT, 1 hour 27 minutes before

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Local storm report, Jul 15, 2:20 PM MDT, 1 hour 23 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 14, 6:36 PM MDT	Special Weather Statement	CYS	Platte	24 min
Jul 14, 10:30 PM MDT	Special Weather Statement	CYS	Laramie	30 min
Jul 14, 11:01 PM MDT	Special Weather Statement	CYS	Goshen	29 min
Jul 15, 1:41 PM MDT	Special Weather Statement	CYS	Laramie	34 min
Jul 15, 2:09 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	23 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; radar from the NEXRAD Level II archive.