A broad and strong Pacific trough and associated surface cold front slowly progressed across western Colorado over the course of several days. As a result, moderate to heavy wet snow fell across the mountains.
Every event with a place to put it; 9 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 GJT wrote it up.
A broad and strong Pacific trough and associated surface cold front slowly progressed across western Colorado over the course of several days. As a result, moderate to heavy wet snow fell across the mountains. Additionally, winds gusted up to 68 MPH in the mountains.
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 Grand Junction, CO wrote its last area forecast discussion before the first event at Nov 27, 3:27 PM MST, 33 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>Hazardous Weather Outlook National Weather Service Grand Junction CO 314 AM MST Wed Nov 27 2019 COZ001>014-017>023-UTZ022>025-027>029-281015- Lower Yampa River Basin-Central Yampa River Basin- Roan and Tavaputs Plateaus-Elkhead and Park Mountains- Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor- Central Colorado River Basin-Grand and Battlement Mesas- Gore and Elk Mountains/Central Mountain Valleys- Central Gunnison and Uncompahgre River Basin- West Elk and Sawatch Mountains-Flat Tops- Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide- Northwest San Juan Mountains-Southwest San Juan Mountains- Paradox Valley/Lower Dolores River- Four Corners/Upper Dolores River-Animas River Basin- San Juan River Basin-Southeast Utah-Eastern Uinta Mountains- Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat- La Sal and Abajo Mountains-Canyonlands/Natural Bridges- 314 AM MST Wed Nov 27 2019 This hazardous weather outlook is for eastern Utah and western Colorado. .DAY ONE...Today and Tonight After a lull in the winter weather this, another storm will begin affecting eastern UT and western CO this afternoon and tonight. The snowfall will start first in the eastern Uinta mountains this afternoon then this evening snowfall will begin in the highest peaks of the La Sal and Abajo mountains and the Tavaputs plateau in eastern UT. By the end of the night winter weather will spread to the San Juan mountains and may also affect the lower elevations of the Four Corners. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday A strong winter storm will impact eastern UT and western CO Thursday through Saturday. Holiday travel will be difficult, if not dangerous across the area. Over any of the high mountain passes travel may not be possible during this storm. Over all the mountains 12 to 24 inches of snow may accumulate, while portions of the San Juan, La Sal, Abajo and Uinta mountains may receive 40 or more inches of snow by Saturday afternoon. There will be a rain and snow mix in the valleys through Friday, changing to snow Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
<!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><!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>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
400 PM MST WED NOV 27 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0329 PM NON-TSTM WND GST 5 SW CORTEZ 37.30N 108.63W
11/27/2019 M48 MPH MONTEZUMA CO ASOS
ASOS STATION KCEZ CORTEZ MUNICIPAL AIRPORT.
&&The national radar mosaic for the moment the first event began.
4 winter weather, 3 winter storm, 2 heavy snow. Local standard time, as filed.
Generally 20 to 25 inches of snow fell across the area. Winds gusted to at least 45 MPH with near white-out conditions occurring at times along Highway 550 over the mountain passes.
Generally 17 to 30 inches of snow fell across the area. Winds gusted from 46 to 53 MPH with near white-out conditions occurring at times along Highway 550 over the mountain passes.
Strong wind gusts of up to 68 MPH during much of the event resulted in near white-out conditions with icy, snow-packed roads over Douglas Pass.
Most SNOTELs across the area averaged 8 to 10 inches of snow with locally higher amounts up to 18 inches estimated by the Park Reservoir site. A CoCoRaHs observer measured 12 inches of new snow in 24 hours.
Generally 8 to 14 inches of snow fell across the area. Wind gusts averaged 30 to 40 MPH for much of the event which resulted in widespread blowing snow.
Generally 10 to 20 inches of snow fell across the area in less than 24 hours. Winds gusted from 35 to 45 MPH with a peak gust of 62 MPH.
Generally 4 to 8 inches of snow fell across the area. Winds gusted from 40 to 50 MPH. A strong band of snow showers on Friday, November 29 produced wind gusts of 34 to 40 MPH along Interstate 70 between Avon and Vail Pass which reduced visibilities down to less than a half a mile.
Generally 6 to 12 inches of snow fell across the area with up to 13 inches estimated by the Bison Lake SNOTEL site.
An estimated 10 to 12 inches of snow fell across the higher elevations with 2 to 4 inches across the lower elevations. Winds gusted from 48 to 53 MPH.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2019Every state in 2019This day in weather historyWarnings in Colorado, November 2019
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: 858278, 858277, 858281, 858279, 858280, 858282, 858283, 858284, 858285.