Strong winds were measured and felt across much of southeastern Wyoming. Several locations across the wind prone areas and high plains had gusts into the middle 60 to middle 70 mph range.
Every event with a place to put it; 14 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CYS wrote it up.
Strong winds were measured and felt across much of southeastern Wyoming. Several locations across the wind prone areas and high plains had gusts into the middle 60 to middle 70 mph range. Heavy snow followed closely behind the high winds with reports of heavy snow for much of the western mountains and northern high plains. Snow totals in the mountains of the Sierra Madre and Snowy Ranges in the 20 to even up to 60 inches of new snowfall. Areas in the High Plains received half a foot of snow to a foot and half in some places.
The local office's own words before the first event, 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 the first event at Nov 22, 4:45 AM MST, 15 minutes earlier.
<!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><!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 national radar mosaic for the moment the first event began.
7 heavy snow, 7 high wind. Local standard time, as filed.
Site at Medicine bow or twenty-one miles south-southeast of Elk Mountain measured a storm total of sixty inches of snowfall. This was measured using a snow water equivalent of 4.0 inches and a snow to liquid ratio of 15 to 1.
Blackhall Mountain site had a snow water equivalent measurement of 3.3 inches and using a snow to liquid ratio of 15 to 1, estimated snowfall calculated out to be 49.5 inches. Several other Snotel sites had snowfall measurements in the upper 30s and upper 40 inch ranges.
Sensor along Interstate 80 seven miles northeast of Buford measured the strong wind gust while other sensors along the interstate had gusts in the upper 50 and 60 mph range.
Sensor along County Road 402 three miles east-southeast of Elk Mountain measured the associated wind gust.
A Union Pacific Railroad sensor 11 miles west-southwest of Warren Air Force Base had multiple reports of wind gusts exceeding 70 mph. Nearby sensor along Interstate 80 had measured gusts in the 60 mph range.
Sensor eight miles south of Chugwater or near Bear Creek measured the reported wind gust. Sensors across the city of Cheyenne had measured gusts in the low 60 mph range.
Sensor thirteen miles south of Glendo measured the reported wind gust. Other nearby sensors by Sibley Peak had wind gusts from the upper 50s into the middle 60 mph range.
La Prele Creek site measured a snow water equivalent of 1.5 inches and using a snow to liquid ratio of 12 to 1, estimated snowfall accumulation was calculated at 18.0 inches. Another Snotel site 12 north-northeast of Garrett had a calculated snowfall of 15.6 inches.
Sensor located two miles south-southwest of Bordeaux measured the reported wind gust.
Sensor located seven miles south-southwest of Meriden or nearby Gun Barrel measured the reported wind gust. A nearby site also measured a sustained wind of 40 mph.
A public report of 6.0 inches of snowfall measured in the city of Rawlins.
Observer in Shirley Basin measured a storm total snowfall of 6.0 inches.
Observer 10 miles north of Jay Em measured 6.0 inches of snowfall.
Public report on Facebook of heavy snow measuring 7.5 inches ten miles north of Lusk. A CO-OP observer eleven miles north-northeast of Lance Creek measured 6.3 inches of snow in addition to another public report of 6.0 inches in Manville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2018Every state in 2018This day in weather historyWarnings in Wyoming, November 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 792609, 792617, 792577, 792590, 792583, 792599, 792593, 792616, 792597, 792596, 792611, 792610, 792613, 792615.