Afternoon showers primed the atmosphere with sufficient, low-level moisture, which then combined with cooling overnight temperatures to produce dense fog.
Every event with a place to put it; 3 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.
Afternoon showers primed the atmosphere with sufficient, low-level moisture, which then combined with cooling overnight temperatures to produce dense fog.
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 Feb 18, 3:35 PM MST, 5 hours 25 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 545 AM MST THU FEB 18 2010 COZ001>014-017>023-UTZ022>025-027>029-191245- 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- 545 AM MST THU FEB 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. ...A SERIES OF STORMS WILL TRACK OVER THE REGION THROUGH THE WEEKEND... .DAY ONE...TODAY AND TONIGHT SNOW WILL INTENSIFY THIS AFTERNOON AND CONTINUE THROUGH TONIGHT. ADVISORIES HAVE BEEN ISSUED FOR THE NORTHERN AND NORTH CENTRAL MOUNTAIN OF WESTERN COLORADO. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SERIES OF MOIST PACIFIC STORMS WILL BRING WIDESPREAD RAIN AND SNOW TO MUCH OF WESTERN COLORADO AND EASTERN UTAH THROUGH NEXT MONDAY. THE HEAVIEST PRECIPITATION WILL FALL SATURDAY AND SATURDAY NIGHT...WITH SIGNIFICANT MOUNTAIN SNOWFALL EXPECTED. STAY TUNED TO NOAA WEATHER RADIO OR VISIT THE NATIONAL WEATHER SERVICE GRAND JUNCTION WEB SITE AT WEATHER.GOV/GJT FOR ADDITIONAL INFORMATION ON THIS INCLEMENT WEATHER. SPOTTER INFORMATION STATEMENT SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. TGJT
The national radar mosaic for the moment the first event began.
3 dense fog. Local standard time, as filed.
Dense fog formed along the Interstate 70 corridor between Rifle and Silt. Visibilities were reduced to one-quarter mile and were estimated to be as low as 50 feet in the thickest fog banks.
Visibility was reduced to near one-quarter mile in areas.
Dense fog formed along Interstate 70, particularly in the lowest areas near the Colorado River. Visibilities ranged from one mile in eastern portions of the area near Eagle to less than one-quarter mile in western portions near New Castle.
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, February 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 2026-10-01. Each event’s entry at NCEI: 210604, 210601, 210606.