The second round of weather from a moist and unseasonably cold Pacific trough produced 4 to 7 inches of new snow. Additionally, winds gusted from 20 to 35 mph and produced areas of blowing and drifting snow.
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.
The second round of weather from a moist and unseasonably cold Pacific trough produced 4 to 7 inches of new snow. Additionally, winds gusted from 20 to 35 mph and produced areas of blowing and drifting snow.
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 Sep 21, 3:29 AM MST, 8 hours 31 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
429 AM MDT THU SEP 21 2006
...MORE FALL WEATHER ON THE WAY...
.SHORT TERM (TODAY THROUGH FRIDAY NIGHT)...
CLOSED 500 MB LOW MOVED SOUTHEAST OVERNIGHT AND WAS CENTERED SOUTH OF
ALS THIS MORNING. AS THIS SYSTEMS CONTINUES TO EXIT THE AREA
PRECIPITATION OVER WESTERN CO WILL GRADUALLY DECREASE FROM WEST TO
EAST. WITH 700 MB FLOW SHIFTING FROM NE TO NW DURING THE DAY...WILL
CONTINUE THE SNOW ADVY FORM THE CO NORTHERN AND PORTIONS OF THE CO
CENTRAL MOUNTAINS TODAY. WILL EXPECT ANOTHER 2-5 INCHES OF
ACCUMULATION ON TOP OF ALREADY FALLEN SNOW...WITH HIGHEST AMOUNTS ON
NORTH AND NORTHWEST FACING SLOPES ABOVE 9000 FEET.
AFTER A BRIEF BREAK THIS AFTERNOON...WHEN CONDITIONS WILL IMPROVE A
BIT OVER THE MOUNTAINS...ANOTHER DIGGING TROF WILL BE HEADING OUR
WAY. THIS ONE CARRYING STRONG JET SUPPORT WITH IT WHICH WILL DRIVE IT
FURTHER SOUTH TONIGHT AND FRIDAY. COLDER AIR WITH THIS SECOND SYSTEM
WILL LOWER SNOW LEVELS TO THE 7000-7500 FOOT RANGE LATE TONIGHT AND
FRIDAY.
ISSUED A SNOW AND BLOWING SNOW ADVY FOR THE UINTAH MTS IN UTAH AND
THE HIGHER MOUNTAINS ZONES IN WESTERN CO FOR TONIGHT AND FRIDAY. BEST
DYNAMICS APPEAR TO BE OVERHEAD BETWEEN 06Z AND 12Z SO HELD BACK ON
THE WINTER STORM WARNING. BELIEVE SNOWFALL SHOULD RANGE FROM 6 TO 11
INCHES...BUT DAY AND SWING SHIFTS WILL HAVE TO WATCH THE SNOW TOTALS
IN CASE A ZONE OR TWO EXCEED A FOOT. SNOWFALL SHOULD TAPOR OFF FRIDAY
NIGHT. HAVE LOWERED TEMPS A FEW DEGREES ACROSS THE BORDER EACH PERIOD
AND GUIDANCE CAME IN COOLER.
.LONG-TERM (SATURDAY THROUGH WEDNESDAY)...
FORECAST FOR THE EXTENDED PERIOD HAS CHANGED LITTLE. SHOWERS BEHIND
THE EXITING SYSTEM WILL BEGIN TO DECREASE EARLY SATURDAY OVER THE
WESTERN CWA...WHILE CONTINUING OVER THE HIGHER TERRAIN OF THE EASTERN
CWA AS NORTHWEST FLOW CONTINUES SNOWFALL OVER OROGRAPHICALLY
FAVORED AREAS. ACCUMULATIONS ON SATURDAY WILL BE LIGHT AND BY SUNDAY
AFTERNOON ALL SHOWERS SHOULD END. NORTHWEST FLOW WILL CONTINUE TO
PREVAIL OVER THE AREA THROUGH THE MIDDLE OF NEXT WEEK FOR DRIER AND
MORE BENIGN WEATHER. MODELS ARE LOOSELY AGREEING WITH BRINGING A
SHORTWAVE TROUGH THROUGH THE SOUTHWEST FOR THE BEGINNING OF NEXT
WEEK...BUT VARY GREATLY ON TIMING...EVEN CONSECUTIVE RUNS OF THE SAME
MODEL. KEPT SOME CLOUD COVER IN THE FORECAST TO ACCOUNT FOR THIS...
BUT NO MENTIONABLE POPS AT THIS POINT. TEMPERATURES WILL START OUT
WELL BELOW NORMAL ON SATURDAY BEFORE GRADUALLY CLIMBING TO NEAR
NORMAL BY THE MIDDLE OF THE WEEK.
&&
.GJT WATCHES/WARNINGS/ADVISORIES...
.CO...SNOW AND BLOWING SNOW ADVISORY UNTIL 6 PM TODAY FOR
NORTHERN AND CENTRAL MOUNTAINS...ZONES 4/10/13.
...SNOW AND BLOWING SNOW ADVISORY FROM 6 PM TODAY THROUGH 6 PM MDT
FRIDAY FOR ALL OF THE HIGHER MOUNTAINS...INCLUDING ZONES
4/9/10/12/13/18/19.
.UT...SNOW AND BLOWING SNOW ADVISORY FROM 6 PM TODAY THROUGH 6 PM MDT
FRIDAY FOR THE EASTERN UINTAH MOUNTAINS...ZONE 23.
CJC/HLOHAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND JUNCTION CO 1002 AM MDT THU SEP 21 2006 COZ004-009-010-012-013-018-019-023-UTZ023-221146- EASTERN UINTA MOUNTAINS-ELKHEAD AND PARK MOUNTAINS-FLAT TOPS- GORE AND ELK MOUNTAINS/CENTRAL MOUNTAINS-GRAND AND BATTLEMENT MESAS- NORTHWEST SAN JUAN MOUNTAINS-SAN JUAN RIVER BASIN- SOUTHWEST SAN JUAN MOUNTAINS-WEST ELK AND SAWATCH MOUNTAINS- 1002 AM MDT THU SEP 21 2006 ...SNOW AND BLOWING SNOW ADVISORY TODAY AND TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN COLORADO MOUNTAINS...AND THE EASTERN UNITA MOUNTAINS. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL CONTINUE TO SPREAD ACROSS THE HIGH COUNTRY TODAY AND TONIGHT...BECOMING WIDESPREAD BY THIS EVENING. BRIEF HEAVY RAIN...OR A MIX OF RAIN AND SNOW...STRONG GUSTY WINDS...AND CLOUD TO GROUND LIGHTING WILL ACCOMPANY SOME OF THE STORMS THIS AFTERNOON. A CHANGE OVER TO SNOW WILL OCCUR EARLY THIS EVENING...WITH SNOW ACCUMULATIONS OF 4 TO 8 INCHES AND LOCALLY HIGHER AMOUNTS ABOVE 8000 FEET. STRONG GUSTY WEST WINDS WILL CAUSE BLOWING AND DRIFTING SNOW. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY ADDITIONAL SNOW ACCUMULATIONS OF 3 TO 5 INCHES ARE EXPECTED FRIDAY ABOVE 8000 FEET. UNSETTLED WEATHER WILL CONTINUE INTO SATURDAY WITH A MIX OF RAIN AND SNOW...OR ALL SNOW OCCURRING. ADDITIONAL ACCUMULATIONS OF SNOW ARE EXPECTED FRIDAY AND SATURDAY. A RETURN TO MORE SEASONAL WEATHER IS ON TAP FOR NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT...BUT SPOTTERS ARE ENCOURAGED TO REPORT RAIN AND SNOWFALL AMOUNTS...AS WELL AS ANY OTHER SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION. COZ001>003-005>008-011-014-017-020>022-UTZ022-024-025-027>029-221146- 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-FOUR CORNERS/UPPER DOLORES RIVER-GRAND VALLEY- LA SAL AND ABAJO MOUNTAINS-LOWER YAMPA RIVER BASIN- PARADOX VALLEY/LOWER DOLORES RIVER-ROAN AND TAVAPUTS PLATEAUS- SOUTHEAST UTAH-TAVAPUTS PLATEAU- UNCOMPAHGRE PLATEAU AND DALLAS DIVIDE-UPPER GUNNISON RIVER VALLEY- UPPER YAMPA RIVER BASIN- 1002 AM MDT THU SEP 21 2006 .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WILL CONTINUE TO SPREAD ACROSS THE AREA TODAY AND TONIGHT...BECOMING WIDESPREAD BY THIS EVENING. BRIEF HEAVY RAIN...OR A MIX OF RAIN AND SNOW...STRONG GUSTY WINDS...AND CLOUD TO GROUND LIGHTING WILL ACCOMPANY SOME OF THE STORMS THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH THURSDAY ADDITIONAL SHOWERS ARE EXPECTED FRIDAY WITH UNSETTLED WEATHER CONTINUING INTO SATURDAY. A RETURN TO MORE SEASONAL WEATHER IS ON TAP FOR NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT...BUT SPOTTERS ARE ENCOURAGED TO REPORT RAIN AND SNOWFALL AMOUNTS...AS WELL AS ANY OTHER SIGNIFICANT WEATHER TO THE NATIONAL WEATHER SERVICE IN GRAND JUNCTION. DJC
The national radar mosaic for the moment the first event began.
1 winter weather. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2006Every state in 2006This day in weather historyWarnings in Utah, September 2006
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: 5533685.