A Pacific storm system and associated cold front brought locally heavy snow and high winds to the Mojave Desert and southern Great Basin.
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 VEF wrote it up.
A Pacific storm system and associated cold front brought locally heavy snow and high winds to the Mojave Desert and southern Great Basin.
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 Las Vegas, NV wrote its last area forecast discussion before the first event at Dec 7, 4:50 AM PST, 2 hours 10 minutes earlier.
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</html>HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 548 AM PST MON DEC 7 2009 AZZ001>003-036-CAZ519>527-NVZ014>022-080700- NORTHWEST PLATEAU-LOWER COLORADO RIVER VALLEY-NORTHWEST DESERTS- LAKE MEAD NATIONAL RECREATION AREA-EASTERN SIERRA SLOPES- OWENS VALLEY-WHITE MOUNTAINS OF INYO COUNTY- DEATH VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT- EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN- SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY- ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY- NORTHEAST CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY- SHEEP RANGE-SPRING MOUNTAINS-LAS VEGAS VALLEY- SOUTHERN CLARK COUNTY- 548 AM PST MON DEC 7 2009 /648 AM MST MON DEC 7 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST ARIZONA...SOUTHEAST CALIFORNIA AND SOUTHERN NEVADA. .DAY ONE...TODAY AND TONIGHT SNOW FOR ELEVATIONS ABOVE 4000 FEET WILL BE THE MAIN HAZARD TODAY AND TONIGHT. WIDESPREAD PRECIPITATION WILL OCCUR ACROSS THE REGION TODAY AND THIS EVENING THEN WILL TAPER OFF FROM WEST TO EAST OVERNIGHT. TOTAL SNOW ACCUMULATIONS OF 6 TO 12 INCHES CAN BE GENERALLY BE EXPECTED ABOVE 4000 FEET. MOUNTAINS ABOVE 7000 FEET IN SOUTHERN NEVADA AND NORTHWEST ARIZONA...ALONG WITH THE SOUTHERN SIERRA...MAY SEE 1 TO 2 FEET. ESMERALDA AND CENTRAL NYE COUNTIES SHOULD SEE THE LEAST AMOUNTS BUT STILL 4 TO 8 INCHES BY LATE THIS EVENING. WINTER STORM WARNINGS ARE IN EFFECT THROUGH TONIGHT...SEE THE LATEST WINTER WEATHER MESSAGE FOR DETAILS. STEADY RAINFALL IN THE LOWER DESERT WILL MAINLY PRODUCE HAZARDOUS DRIVING CONDITIONS DUE TO SLICK ROADS. RAINFALL AMOUNTS BETWEEN A HALF-INCH AND AN INCH WILL BE COMMON. SIGNIFICANT FLOODING IS NOT EXPECTED THOUGH LOCAL RUNOFF PROBLEMS MAY LEAD TO MINOR STREET FLOODING OR PONDING OF LOW LYING AREAS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY TUESDAY AND WEDNESDAY WILL BE DRY BEFORE A WEAKER PACIFIC STORM MOVES INLAND THURSDAY BRINGING LIGHTER AMOUNTS OF RAIN AND SNOW. ANOTHER PACIFIC STORM WITH THE POTENTIAL FOR WIDESPREAD PRECIPITATION IS FORECAST TO MOVE INTO THE REGION SATURDAY AND SUNDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. JA
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</html>The national radar mosaic for the moment the first event began.
2 high wind, 1 heavy snow. Local standard time, as filed.
The Cottonwood Lakes SNOTEL (10 miles SW of Lone Pine at 10150') estimated 9.6 inches of snow.
This gust occurred 29 miles SSW of Searles Valley.
This gust occurred at Twentynine Palms (KNXP).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2009Every state in 2009This day in weather historyWarnings in California, December 2009
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: 199607, 199608, 199609.