Dense fog formed in the lower, snow-covered valleys, where strong temperature inversions allowed sufficient overnight cooling to occur.
Every event with a place to put it; 1 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.
Dense fog formed in the lower, snow-covered valleys, where strong temperature inversions allowed sufficient overnight cooling to occur.
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 7, 2:52 PM MST, 5 hours 8 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 555 AM MST SUN FEB 7 2010 COZ001>014-017>023-UTZ022>025-027>029-071255- 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- 555 AM MST SUN FEB 7 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN UTAH AND WESTERN COLORADO. .DAY ONE...TODAY AND TONIGHT SNOW SHOWERS WILL DEVELOP OVER THE MOUNTAINS TODAY...AND BECOME HEAVY AT TIMES BY TONIGHT ESPECIALLY OVER THE SOUTHERN ZONES WHERE WINTER STORM WARNINGS HAVE BEEN ISSUED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH WEDNESDAY WIDESPREAD SNOW...HEAVY AT TIMES OVER THE SOUTHERN ZONES WILL CONTINUE THROUGH MONDAY BEFORE TAPERING OFF. MAXIMUM SNOWFALL APPEARS TO BE CENTERED OVER SAN JUANS...WHERE 1 TO 2 FEET OF SNOW IS EXPECTED. LIGHTER AMOUNTS ARE EXPECTED OVER THE NORTHERN AND CENTRAL MOUNTAINS WHERE 6 TO 12 INCHES OF SNOW ARE FORECAST. BY TUESDAY SNOWFALL WILL HAVE DIMINISHED CONSIDERABLY THOUGH SOME REMAINING SNOWSHOWERS OVER MOUNTAINS WILL PERSIST. REMAINDER OF THE WEEK WILL SEE MAINLY OROGRAPHIC SNOWFALL OVER FAVORED TERRAIN THOUGH AMOUNTS LOOK TO BE ON THE LIGHT SIDE. .SPOTTER INFORMATION STATEMENT SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.
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</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
800 PM MST SUN FEB 07 2010
..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..
0758 PM DENSE FOG REDLANDS 39.09N 108.65W
02/07/2010 E0.25 MILE MESA CO NWS EMPLOYEE
CURRENT VISIBILITY IN FOG LESS THAN A QUARTER MILE.
ESTIMATED BETWEEN 200 FT AND 200 YARDS.
&&
EVENT NUMBER GJT1000168
MALEKSAThe national radar mosaic for the moment the first event began.
1 dense fog. Local standard time, as filed.
Widespread dense fog reduced visibilities to below one-quarter mile. Some areas estimated visibilities as low as 200 ft. near the Redlands area of Grand Junction.
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: 210597.