Alert archive / Wyoming / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 110, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 18, 2024, 6:10 PM MDT for Goshen County, Laramie County, Wyoming; Banner County, Kimball County, Nebraska. It was in force for 35 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 18, 2024, 6:10 PM MDT (00:10 UTC)
- Expired
- Jul 18, 2024, 6:45 PM MDT
- In force
- 35 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Banner County, NE, Kimball County, NE, Goshen County, WY, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 72 km from the middle of the area, began a volume at 00:12 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
Rapid City, SD (KUNR), launched 00:00Z, 0.2 hours before the alert went out and 299 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
- 271 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 2939 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
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 18, 5:33 PM MDT, 37 minutes earlier.
Area forecast discussion, Jul 18, 5:33 PM MDT, 37 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Hazardous weather outlook, Jul 18, 3:55 AM MDT, 14 hours 15 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 355 AM MDT Thu Jul 18 2024 NEZ002-003-019>021-054-055-095-096-WYZ101>103-106>108-117>119- 191000- 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- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range Foothills- Central Laramie County-East Laramie County- 355 AM MDT Thu Jul 18 2024 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Severe weather potential for Thursday and Friday, with Friday looking to be the better day. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Cooler weather expected this weekend with daily chances of storms through early next week. .Spotter information statement... Spotter activation will not be needed. WYZ104-105-109>116-191000- Ferris/Seminoe/Shirley Mountains-Shirley Basin- 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- 355 AM MDT Thu Jul 18 2024 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT Warm today with showers possible in the afternoon across the higher terrain. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY Cooler weather expected this weekend with daily chances of storms through early next week. .Spotter information statement... Spotter activation will not be needed.
In the hours before
Special weather statement, Jul 18, 3:38 PM MDT, 2 hours 32 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
338 PM MDT Thu Jul 18 2024
WYZ116>118-182215-
South Laramie Range WY-Central Laramie County WY-
South Laramie Range Foothills WY-
338 PM MDT Thu Jul 18 2024
...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LARAMIE COUNTY
THROUGH 415 PM MDT...
At 337 PM MDT, Doppler radar was tracking a strong thunderstorm near
Table Mountain Ranches, or 17 miles west of Cheyenne, moving
southeast at 15 mph.
HAZARD...Wind gusts up to 50 mph and half inch hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Happy Valley, Federal, Table Mountain Ranches, Willadsen Estates,
Granite Canon, Granite Springs Reservoir, Crystal Lake Reservoir,
Curt Gowdy State Park, Pine Grove Estates, Granite Springs Retreat,
Harriman Heights, and Cheyenne Pass.
This includes the following highways...
Interstate 25 in Wyoming between mile markers 1 and 5.
Interstate 80 in Wyoming between mile markers 338 and 356.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4121 10528 4129 10510 4100 10479 4100 10525
TIME...MOT...LOC 2137Z 319DEG 14KT 4118 10513
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...50 MPH
TrudelSpecial weather statement, Jul 18, 4:41 PM MDT, 1 hour 29 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
441 PM MDT Thu Jul 18 2024
WYZ106-116>118-182315-
South Laramie Range WY-
Central Laramie Range and Southwest Platte County WY-
Central Laramie County WY-South Laramie Range Foothills WY-
441 PM MDT Thu Jul 18 2024
...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN ALBANY AND
NORTHWESTERN LARAMIE COUNTIES THROUGH 515 PM MDT...
At 441 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Horse Creek, or 28 miles northeast of Laramie, moving
southeast at 15 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation is
possible.
Locations impacted include...
Federal, Table Mountain Ranches, Whitaker, and Horse Creek.
This includes Interstate 25 in Wyoming between mile markers 28 and
41.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4145 10535 4165 10511 4151 10463 4121 10519
TIME...MOT...LOC 2241Z 320DEG 12KT 4153 10512
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
TrudelLocal storm report, Jul 18, 5:25 PM MDT, 45 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Special weather statement, Jul 18, 5:29 PM MDT, 41 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>Special weather statement, Jul 18, 5:54 PM MDT, 16 minutes before
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 2:41 PM MDT | Special Weather Statement | CYS | Carbon | 49 min |
| Jul 19, 2:52 PM MDT | Special Weather Statement | CYS | Laramie | 8 min |
| Jul 19, 3:06 PM MDT | Special Weather Statement | CYS | Albany | 39 min |
| Jul 19, 3:27 PM MDT | Special Weather Statement | CYS | Albany | 48 min |
| Jul 19, 4:21 PM MDT | Special Weather Statement | CYS | Albany | 39 min |
| Jul 19, 5:21 PM MDT | Special Weather Statement | CYS | Laramie | 24 min |
| Jul 19, 5:48 PM MDT | Special Weather Statement | CYS | Platte | 42 min |
| Jul 19, 5:55 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 50 min |
| Jul 18, 6:45 PM MDT | Special Weather Statement | CYS | Banner | 45 min |
| Jul 18, 7:33 PM MDT | Special Weather Statement | CYS | Kimball | 42 min |
| Jul 19, 3:40 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 50 min |
| Jul 19, 4:29 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 25 min |
| Jul 19, 5:00 PM MDT | Special Weather Statement | CYS | Box Butte | 30 min |
| Jul 19, 5:15 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 34 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2024Severe Thunderstorm Warnings in Nebraska, 2024Every severe thunderstorm warning in 2024
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.