Southwest Wyoming was hit by the same moist Pacific system that impacted Utah over a four-day period. Rain changed to snow on the night of December 6th and continued falling into the 8th.
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 SLC wrote it up.
Southwest Wyoming was hit by the same moist Pacific system that impacted Utah over a four-day period. Rain changed to snow on the night of December 6th and continued falling into the 8th.
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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Dec 6, 4:31 PM MST, 12 hours 29 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SALT LAKE CITY UT 558 AM MST THU DEC 6 2007 UTZ001>016-019>021-517-518-WYZ021-071300- CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT- SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT- GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS- WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80- WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS- WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL- SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH- UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH- GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS- SOUTHERN MOUNTAINS-SOUTHWEST WYOMING- 558 AM MST THU DEC 6 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF UTAH AND SOUTHWEST WYOMING. .DAY ONE...TODAY AND TONIGHT MOISTURE ASSOCIATED WITH AN APPROACHING PACIFIC STORM SYSTEM WILL SPREAD ACROSS THE REGION TODAY. PRECIPITATION IS EXPECTED TO BREAK OUT ACROSS PORTIONS OF THE OUTLOOK AREA THIS AFTERNOON...THEN INCREASE IN COVERAGE AND INTENSITY TONIGHT. SNOW IS EXPECTED ACROSS THE HIGHER TERRAIN WITH RAIN EXPECTED ACROSS LOWER ELEVATIONS THROUGH TONIGHT. SEE THE LATEST WINTER WEATHER STATEMENTS FOR ADDITIONAL INFORMATION. HEAVY RUNOFF FROM EXCESSIVE RAINFALL WILL ALSO BE POSSIBLE ACROSS FAR SOUTHERN UTAH...WHERE A FLASH FLOOD WATCH IS IN EFFECT FROM THIS AFTERNOON THROUGH FRIDAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE PACIFIC STORM SYSTEM WILL SPREAD ACROSS THE REGION FRIDAY THROUGH SATURDAY...BRINGING WIDESPREAD SNOWFALL TO THE HIGHER TERRAIN. SNOW LEVELS ARE EXPECTED TO FALL TO THE VALLEY FLOORS BY FRIDAY NIGHT WITH ACCUMULATIONS LIKELY ACROSS MANY LOCATIONS. BE SURE TO MONITOR LATER FORECASTS AND OUTLOOKS FOR ADDITIONAL INFORMATION ON THIS PENDING WINTER STORM. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT... HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
Evanston, Wyoming received 6 inches of snow in 12 hours.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2007Every state in 2007This day in weather historyWarnings in Wyoming, December 2007
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 2026-09-24. Each event’s entry at NCEI: 68344.