A fast moving trough brought a relatively short period of moderate to heavy snow to many mountains in western Colorado.
Every event with a place to put it; 5 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 fast moving trough brought a relatively short period of moderate to heavy snow to many mountains in western Colorado.
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 Mar 7, 2:08 PM MST, 11 hours 52 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND JUNCTION CO 208 PM MST WED MAR 7 2007 .SHORT TERM (TONIGHT THROUGH FRIDAY)...THE NEXT OPEN PACIFIC TROF IS INTO THE WESTERN GREAT BASIN AND THE ASSOCIATED COLD FRONT IS INTO NORTHERN CALIFORNIA. WARM ADVECTION CLOUDS ARE SWEEPING IN FROM THE SW-W FLOW HELPING WITH MILD TEMPS TONIGHT. THIS TROF IS MOVING INTO A MEAN LONG-WAVE RIDGE...HAS NO JET SUPPORT AND ONLY CONDITIONAL AFTERNOON INSTABILITY. THERE IS A WEAK SFC TROF PASSAGE IN THURSDAY AFTERNOON...BUT STILL WILL UNDERCUT MODEL QPF/SNOW AMOUNTS FOR THURSDAY-THURSDAY NIGHT. MTNS CAN EXPECT ONLY LIGHT SNOWFALL...WITH AN INCH OR SO FCSTD IN THE NORTHERN MTNS THURSDAY AFTN. POCKETS OF 3 INCH POSSIBLE. SNOW LEVEL THURSDAY AFTN 7KFT NORTH...8KFT SOUTH. FLAT FAST FLOW CONTINUES ON FRIDAY PRODUCING MID-HIGH CLOUD CEILINGS...HIGH COUNTRY BREEZES...PERHAPS AN ISOLD FLURRY OVER THE NORTHERN MTNS...AND MILD TEMPERATURES ACROSS THE CWA. RAMEY .LONG TERM (FRIDAY NIGHT THROUGH WEDNESDAY)... A WEAK SHORTWAVE EMBEDDED IN THE WEST NORTHWEST FLOW WILL APPROACH THE AREA AT THE BEGINNING OF THE PERIOD. THIS FEATURE LOOKS A LITTLE SLOWER THAN PREVIOUS RUNS WITH BEST TIMING NOW WAITING UNTIL SATURDAY. SO HAVE BACKED OFF POPS FOR FRI NIGHT. THIS FAST MOVING FEATURE ONLY HAS LIMITED MOISTURE AND ENERGY...AND MAINLY BRUSHES THE NORTH. SO ANY ACTIVITY WILL BE SHORT IN DURATION WITH CHANCE POPS OVER THE NORTHERN MOUNTAINS STILL REASONABLE. THIS WAVE DROPS INTO THE PLAINS BY MIDDAY SUNDAY AS THE WESTERN RIDGE AMPLIFIES OVER THE WEST. THE RIDGE AXIS SHIFTS OVERHEAD ON MON...THEN FLATTENS THROUGH THE REMAINDER OF THE PERIOD. TEMPS WILL GENERALLY RUN ABOVE NORMAL THROUGH THE PERIOD. && .GJT WATCHES/WARNINGS/ADVISORIES... .CO...NONE. .UT...NONE. JOE+ELH
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 314 AM MST WED MAR 7 2007 COZ001>014-017>023-UTZ022>025-027>029-081100- 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- 314 AM MST WED MAR 7 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN COLORADO AND EASTERN UTAH. .DAY ONE...TODAY AND TONIGHT ISOLATED SNOW SHOWERS WILL DEVELOP IN THE MOUNTAINS LATE TONIGHT. NO SIGNIFICANT SNOW ACCUMULATION IS EXPECTED OVERNIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THERE IS A CHANCE OF MOUNTAIN SNOW SHOWERS AND A SLIGHT CHANCE OF VALLEY RAIN AND SNOW SHOWERS THURSDAY THROUGH SATURDAY. ONLY LIGHT SNOW ACCUMULATION IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY AND TONIGHT. HLO/CJC
The national radar mosaic for the moment the first event began.
5 winter weather. Local standard time, as filed.
Snowfall amounts of 4 to 7 inches blanketed the area.
Snowfall amounts of 5 to 8 inches blanketed the area.
Snowfall amounts of 4 to 6 inches were measured.
Snowfall amounts of 4 to 8 inches blanketed the area.
Snowfall amounts of 5 to 8 inches blanketed the area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2007Every state in 2007This day in weather historyWarnings in Colorado, March 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: 20550, 20551, 20552, 20553, 20554.