A moist Pacific trough produced significant snowfall across the intermountain region.
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 GJT wrote it up.
A moist Pacific trough produced significant snowfall across the intermountain region.
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 20, 3:28 PM MST, 32 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 454 AM MST SAT NOV 20 2010 COZ001>014-017>023-UTZ022>025-027>029-211153- ANIMAS RIVER BASIN-ARCHES/GRAND FLAT-CANYONLANDS/NATURAL BRIDGES- CENTRAL COLORADO RIVER BASIN- CENTRAL GUNNISON AND UNCOMPAHGRE RIVER BASIN- CENTRAL YAMPA RIVER BASIN-DEBEQUE TO SILT CORRIDOR- EASTERN UINTA BASIN-EASTERN UINTA MOUNTAINS- ELKHEAD AND PARK MOUNTAINS-FLAT TOPS- FOUR CORNERS/UPPER DOLORES RIVER- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS- GRAND VALLEY-LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN- NORTHWEST SAN JUAN MOUNTAINS-PARADOX VALLEY/LOWER DOLORES RIVER- ROAN AND TAVAPUTS PLATEAUS-SAN JUAN RIVER BASIN-SOUTHEAST UTAH- SOUTHWEST SAN JUAN MOUNTAINS-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY- UPPER YAMPA RIVER BASIN-WEST ELK AND SAWATCH MOUNTAINS- 454 AM MST SAT NOV 20 2010 ...BIG WINDS BIG SNOW AND DEEP COLD DEVELOP THROUGH WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT WEST TO SOUTHWEST WIND GUSTS OF 25 TO 40 MPH WILL OCCUR OVER THE HIGHER TERRAIN AND COULD POSE PROBLEMS FOR HIGH PROFILE VEHICLES TRAVELING MOUNTAIN PASSES. LIGHT RAIN OR SNOW SHOWERS OVER THE NORTH THIS AFTERNOON WILL TRANSITIONS TO HEAVY SNOW FOR ALL THE MOUNTAINS AND NORTHERN VALLEYS THIS EVENING. CONTINUED STRONG GUSTY WINDS WILL PRODUCE AREAS OF BLOWING AND DRIFTING SNOW. HIGH EXPOSED TERRAIN MAY HAVE WHITE-OUT CONDITIONS MAKING TRAVEL DANGEROUS OR IMPOSSIBLE. WINTER STORM WARNINGS GO INTO EFFECT FOR THE MOUNTAINS BEGINNING AT 6 PM. SIGNIFICANT SNOWFALL IS LIKELY IN THE NORTHERN AND PORTIONS OF THE CENTRAL VALLEYS TONIGHT AS WELL. DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY STRONG WINDS AND WIND DRIVEN SNOW IN THE MOUNTAINS COULD POTENTIALLY YIELD 1 TO 2 FEET OF NEW SNOW BY WEDNESDAY EVENING. THE NORTHERN AND CENTRAL VALLEYS COULD RECEIVE 4-8 INCHES OF SNOW. STAY UP TO DATE ON THIS DEVELOPING EARLY SEASON WINTER STORM ON OUR WEB PAGE AT WWW.WEATHER.GOV/GJT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. BUT YOU ARE ENCOURAGED TO REPORT WIND GUST AND PRECIPITATION VALUES TO THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION. JOE
The national radar mosaic for the moment the first event began.
10 winter storm, 4 winter weather. Local standard time, as filed.
Snowfall of 5 to 9 inches was measured above the 8000 foot level. Wind gusts of 25 to 50 mph produced local blizzard conditions.
Areas of blizzard conditions were reported during this event which produced 8 to 14 inches of snow and wind gusts of 40 to 80 mph. Locally stronger wind gusts included 97 mph at the top of Telluride Ski Area.
Snowfall of 10 to 22 inches was measured. Wind gusts of 25 to 50 mph produced local blizzard conditions.
Areas of blizzard conditions were reported during this event which produced 5 to 6 inches of snowfall and wind gusts of 50 to 70 mph. A peak gust of 78 mph was recorded on Douglas Pass.
Snowfall of 10 to 15 inches was measured. Wind gusts of 25 to 50 mph produced local blizzard conditions.
Snowfall of 9 to 23 inches was measured. Wind gusts of 30 to 60 mph produced areas of blizzard conditions.
Snowfall of around 12 inches occurred over about half of the area. Wind gusts of 30 to 65 mph produced areas of blizzard conditions.
Areas of blizzard conditions were reported during this event which produced 8 to 20 inches of snow and wind gusts of 40 to 80 mph. Locally stronger wind gusts included 113 mph at the top of Eagle Mountain.
Snowfall of 1 to 5 inches was measured in about half of the area. Wind gusts of 30 to 45 mph produced areas of blowing and drifting snow.
Snowfall of 1 to 4 inches was measured. Wind gusts of 35 to 60 mph produced local blizzard conditions.
Snowfall of 5 to 12 inches was measured. Wind gusts of 25 to 45 mph produced areas of blowing and drifting snow.
Snowfall of 8 to 15 inches was measured. Wind gusts of 30 to 55 mph produced local blizzard conditions.
Snowfall of 8 to 15 inches was measured. Wind gusts of 30 to 55 mph produced local blizzard conditions.
Snowfall of 2 to 5 inches was measured. Wind gusts of 25 to 55 mph produced local blizzard conditions.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2010Every state in 2010This day in weather historyWarnings in Colorado, November 2010
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 2026-09-30. Each event’s entry at NCEI: 269333, 269335, 269332, 269328, 269331, 269329, 269330, 269336, 269338, 269339, 269340, 269327, 269342, 269341.