Alert archive / Wyoming / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 74, NWS Cheyenne, WY

June 13, 2025Converse County, Niobrara County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 13, 2025, 3:28 PM MDT for Converse County, Niobrara 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 counties it named.

The facts

Issued: Jun 13, 2025, 3:28 PM MDT (21:28 UTC)
Expired: Jun 13, 2025, 4:15 PM MDT
In force: 47 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Converse County, WY, Niobrara County, WY

The radar

The Cheyenne radar (KCYS), 208 km from the middle of the area, began a volume at 21:29 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 13, 1:56 PM MDT	Severe Thunderstorm Watch	SPC	9 hr

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 Jun 13, 2:47 PM MDT, 41 minutes earlier.

Area forecast discussion, Jun 13, 2:47 PM MDT, 41 minutes before

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Hazardous weather outlook, Jun 13, 2:50 PM MDT, 38 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
250 PM MDT Fri Jun 13 2025

NEZ002-003-019>021-054-055-095-096-WYZ101>119-142100-
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-
250 PM MDT Fri Jun 13 2025

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

- Thunderstorm threat continues through the weekend, with a
  daily risk of strong to severe activity expected.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

- Temperatures notably above average this weekend with highs 5
  to 10 degrees warmer than normal.

- Strong to severe thunderstorms continue into next week with a
  quick cool-off to bring us back to near normal before heating
  back to well above normal late next week.

.Spotter information statement...

Spotters are encourage to report severe weather to the NWS.

In the hours before

Special weather statement, Jun 13, 12:52 PM MDT, 2 hours 36 minutes before

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Special weather statement, Jun 13, 12:55 PM MDT, 2 hours 33 minutes before

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Special weather statement, Jun 13, 1:48 PM MDT, 1 hour 40 minutes before

Special Weather Statement
National Weather Service Cheyenne WY
148 PM MDT Fri Jun 13 2025

WYZ103>106-132030-
Shirley Basin WY-
Central Laramie Range and Southwest Platte County WY-
North Laramie Range WY-Ferris/Seminoe/Shirley Mountains WY-
148 PM MDT Fri Jun 13 2025

...GUSTY SHOWERS WILL IMPACT NORTHEASTERN CARBON...NORTHEASTERN
ALBANY AND SOUTHWESTERN CONVERSE COUNTIES THROUGH 230 PM MDT...

At 147 PM MDT, Doppler radar was tracking gusty showers along a line
extending from 8 miles northeast of Prior Flat Campground to 8 miles
east of Battle Mountain to 7 miles northwest of Wheatland Reservoir
Number 3. Movement was east at 45 mph.

HAZARD...Wind gusts of 50 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Shirley Basin, Prior Flat Campground, Windy Peak, Wheatland Reservoir
Number 3, Garrett, Dome Rock, Friend Park Campground, and Campbell
Creek Campground.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4206 10618 4232 10683 4243 10683 4243 10608
      4260 10607 4231 10547 4190 10530 4184 10590
TIME...MOT...LOC 1947Z 258DEG 38KT 4230 10644 4214 10605 4193 10584

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH

Natoli

Local storm report, Jun 13, 3:25 PM MDT, 3 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
Jun 12, 6:05 PM MDT	Severe Thunderstorm Warning	CYS	Albany	40 min
Jun 12, 6:29 PM MDT	Severe Thunderstorm Warning	CYS	Goshen, Platte	46 min
Jun 12, 6:31 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	30 min
Jun 12, 7:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	52 min
Jun 12, 7:57 PM MDT	Severe Thunderstorm Warning Considerable damage threat	CYS	Niobrara	33 min
Jun 13, 12:52 PM MDT	Special Weather Statement	CYS	Laramie	53 min
Jun 13, 12:55 PM MDT	Special Weather Statement	CYS	Albany	50 min
Jun 13, 1:48 PM MDT	Special Weather Statement	CYS		42 min
Jun 13, 2:32 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse, Platte	43 min
Jun 13, 2:38 PM MDT	Severe Thunderstorm Warning	CYS	Albany, Converse	37 min
Jun 13, 3:05 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	55 min
Jun 13, 3:59 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Goshen, Niobrara, Platte	28 min
Jun 13, 4:09 PM MDT	Severe Thunderstorm Warning	CYS	Converse	51 min
Jun 13, 4:43 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara	47 min
Jun 13, 4:48 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	72 min
Jun 12, 6:32 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne	43 min
Jun 12, 6:54 PM MDT	Special Weather Statement	CYS	Box Butte	36 min
Jun 13, 4:22 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill, Scotts Bluff, Sioux	53 min
Jun 13, 5:00 PM MDT	Severe Thunderstorm Warning	CYS	Banner, Box Butte, Morrill, Scotts Bluff	45 min
Jun 13, 5:16 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Dawes, Morrill, Scotts Bluff, Sioux	59 min
Jun 13, 5:44 PM MDT	Severe Thunderstorm Warning	CYS	Box Butte, Morrill	61 min
Jun 13, 5:51 PM MDT	Severe Thunderstorm Warning	CYS	Cheyenne, Kimball, Morrill	54 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 2025 Every severe thunderstorm warning in 2025

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.