A moist southwesterly flow aloft brought heavy snow over the eastern San Juan mountains and Upper Rio Grande Valley. tallying 15 inches.
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 PUB wrote it up.
A moist southwesterly flow aloft brought heavy snow over the eastern San Juan mountains and Upper Rio Grande Valley. Wolf Creek Ski area near the summit of Wolf Creek Pass received the most snow with this system...tallying 15 inches.
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 Pueblo, CO wrote its last area forecast discussion before the first event at Dec 9, 3:31 PM MST, 12 hours 29 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PUEBLO CO 331 PM MST SUN DEC 9 2007 .SHORT TERM... (TONIGHT AND MONDAY) ...POTENTIAL FOR FREEZING RAIN ON THE PLAINS THE QUESTION FOR MONDAY... CURRENTLY...STUBBORN INVERSION VERY SLOW TO MIX OUT ACROSS THE LOWER ARKANSAS VALLEY AND FAR SOUTHEAST PLAINS THIS AFTERNOON...WITH TEMPS IN THE TEENS HERE AT KPUB...BUT APPROACHING 40F JUST WEST OF THE CITY IN THE LEE OF THE WET MOUNTAINS. A FEW FLURRIES OVER THE HIGHER PEAKS OF THE SANGRES/SAWATCH RANGE ABOUT ALL THERE IS IN THE WAY OF SNOWFALL SO FAR TODAY. TONIGHT...OVERNIGHT SURFACE PRESSURE GRADIENT IS WEAK DOWNSLOPE...BUT LOOKS TOO WEAK TO PUSH THE COLD AIR OUT OF THE LOWER ARKANSAS VALLEY...BUT SHOULD BE ENOUGH TO PREVENT MUCH EXPANSION OF CURRENT AREA OF STRATUS. FOG FORMATION OVERNIGHT A BIG QUESTION...WITH LOW T/TD SPREADS FROM KPUB EASTWARD...BUT WITH WEAK WLY WIND AND MINIMAL SNOWMELT TODAY...SUSPECT WE WONT SEE MUCH IN THE WAY OF DENSE FOG...JUST PATCHY 3-5SM BR TYPE. MID AND HIGH LEVEL CLOUDS BEGIN TO THICKEN AFTER MIDNIGHT WITH THE SLOW EASTWARD PROGRESSION OF THE SOUTHWEST U.S. CUT-OFF...WITH SOME LIGHT PRECIP OVER THE SAN JUANS AND ALONG THE NM BORDER BY SUNRISE. MIN TEMPS LIKELY ALL OVER THE MAP DEPENDING ON CLOUDS/SNOW COVER/ETC...IN GENERAL KEPT THE PLAINS COLD...BUT WARMED UP THE EAST MOUNTAIN SLOPES SEVERAL DEGREES TO ACCOUNT FOR DOWNSLOPE WARMING. MONDAY...HOW QUICK WILL THE COLD AIR ERODE ON THE PLAINS IS THE QUESTION...AS MID LEVEL TEMPS WARM ENOUGH TO PRODUCE LIQUID PRECIPITATION OVER THE FAR EAST. SUSPECT BOTH NAM AND GFS ARE WAY TOO WARM WITH THEIR SURFACE/NEAR SURFACE TEMPERATURE LAYERS...AS LOW LEVEL WINDS ARE VERY WEAK AND INCREASING MID AND UPPER LEVEL CLOUDS LIMIT INSOLATION MOST OF THE DAY. GOING ALONG WITH THE GFS EARLIER ONSET OF PRECIP OVER THE AREA (IT WAS THE SUPERIOR MODEL WITH PRECIP THIS WEEKEND)...SUGGESTS A WINDOW FOR FREEZING RAIN FROM LATE MORNING THROUGH EARLY EVENING EAST OF A KTAD TO KLHX TO KITR LINE...PROVIDED SURFACE COLD AIR REMAINS IN PLACE. WILL HOIST A WINTER STORM WATCH FOR FREEZING RAIN FOR THE EASTERN TIER OF COUNTIES FOR NOW AND LET LATER SHIFTS EVALUATE DEPTH OF THE COLD AIR. FARTHER WEST...SHOULD SEE EXPANDING COVERAGE OF LIGHT SNOW WITH WARM ADVECTION PATTERN DEVELOPING...BUT MOST ACCUMULATING SNOWFALL WILL HOLD OFF UNTIL AFTER 00Z. GUIDANCE MAX TEMPS WAY TOO WARM WITH CLOUDS AND PRECIP STARTING...THOUGH A FEW LOCATIONS ALONG AND WEST OF I-25 COULD MAKE IT ABOVE FREEZING FOR A FEW HOURS IN THE AFTERNOON. PETERSEN .LONG TERM... (MONDAY NIGHT THROUGH SUNDAY) MAIN CONCERNS INCLUDE SNOW AMOUNTS ACROSS THE MTS AND ADJACENT PLAINS MON NIGHT THROUGH TUES NIGHT ALONG WITH POTENTIAL FOR FREEZING PRECIP ACROSS THE FAR SE PLAINS MON NIGHT. MONDAY NIGHT-TUESDAY NIGHT...12Z GFS RUN REMAINS CONSISTENT WITH PREVIOUS RUNS AS WELL AS LATEST ECMWF AND HAVE TRENDED CURRENT FORECAST TOWARDS ITS SOLUTION. WITH THAT SAID...CUTOFF UPPER LOW ACROSS THE DESERT SW MONDAY NIGHT PROGGED TO SLOWLY DRIFT NORTH AND EAST TOWARDS THE FOUR CORNERS REGION MONDAY NIGHT. THIS SYSTEM IS THEN PROGGED TO WEAKEN AND MERGE WITH A STRONG NORTHERN STREAM SHORT WAVE DIVING ACROSS THE ROCKIES WHICH RESULTS IN A BROAD UPPER TROUGH MOVING ACROSS THE STATE AND INTO THE HIGH PLAINS BY LATE TUESDAY NIGHT. MOIST SOUTHERLY FLOW AND WAA AHEAD OF THE SYSTEM MOVES ACROSS THE SOUTHERN TIER ZONES MON NIGHT WITH SOUTHERLY FLOW CONTINUING THROUGH THE DAY TUESDAY...ALONG WITH WITH GOOD OROGRAPHIC FLOW ACROSS THE SOUTH FACING SLOPES OF THE SAN JUAN AND LA GARTIA MTNS AS WELL AS THE ADJACENT LOWER SLOPES ALONG THE EDGES OF THE SAN LUIS VALLEY...HAS PROMPTED THE ISSUANCE OF A WINTER STORM WATCH FOR ZONES 66>71 STARTING AT 00Z TUE THROUGH 00Z WED...WITH UP TO ANOTHER FOOT OF SNOW FOR THE WOLF CREEK AREA AND 4-8 INCHES ACROSS WESTERN AND EASTERN PORTIONS OF THE SAN LUIS VALLEY. AT THE SFC...A COLD FRONT ASSOCIATED WITH THE NORTHERN STREAM SHORT WAVE IS PROGGED TO DROP ACROSS THE PALMER DVD MONDAY EVENING AND CONTINUE ACROSS THE REST OF THE PLAINS THROUGH MIDNIGHT WITH EAST OF NORTHEAST SFC-H7 FLOW OF 10-20 KTS DEVELOPING AND PERSISTING ACROSS THE EASTERN PLAINS TUESDAY. WAA ONTOP OF THE SHALLOW COOL DOME ACROSS THE EASTERN PLAINS MONDAY NIGHT WILL ALLOW FOR A CONTINUED FREEZING RAIN POTENTIAL ACROSS THE FAR SE PLAINS AND WILL CONTINUE THE WINTER STORM WATCH FOR FREEZING RAIN THROUGH 06Z TUE WHEN ENOUGH COLD AIR ALOFT LOOKS TO TURN ANY FREEZING PRECIP INTO SNOW. WITH THE EASTERLY UPSLOPE FLOW...H7 TEMPS PROGGED BETWEEN -10C AND -16C AND UVV AND MOISTURE AHEAD OF PASSING SYSTEM...WILL PROBABLY NEED SOME HIGHLIGHTS ACROSS THE EASTERN MTNS AND PLAINS TUESDAY...WITH ADVISORY AND LOW END WARNING CRITERIA SNOW AMOUNTS IN FAVORED LOCALES OF THE SOUTHERN SANGRES AND SOUTHERN I-25 CORRIDOR LIKELY. WEDNESDAY-FRIDAY...NORTHWEST FLOW PROGGED TO CONTINUE ACROSS THE REGION WITH OCCASIONAL EMBEDDED SHORT WAVES AND ASSOCIATED BACK DOOR COLD FRONTS ACROSS THE EASTERN PLAINS WILL KEEP TEMPERATURES BELOW SEASONAL AVERAGES ALONG WITH LIGHT SNOW CHANCES ACROSS MAINLY THE HIGHER TERRAIN. HAVE NOT RE-INTRODUCED POPS ACROSS THE PLAINS ATTM...THOUGH MAY NEED TO THURSDAY NIGHT AND EARLY FRIDAY IF CURRENT MODELS ARE TRUE. SATURDAY-SUNDAY...A WARMING AND DRYING TREND CONTINUES TO BE IN THE OFFING AS A MORE ZONAL FLOW PATTERN LOOKS TO BE ESTABLISHED ACROSS THE WESTERN CONUS. -MW && .AVIATION... CIGS AT KPUB THE BIGGEST QUESTION...WITH WRN EDGE OF THE STRATUS WITHIN SIGHT OF THE AIRPORT AS OF 2130Z. DOUBT CURRENT AREA OF STRATUS WILL EXPAND MUCH OVERNIGHT WITH WEAK WEST WIND DEVELOPING...SO IF KPUB CAN CLEAR BY SUNSET...STRATUS MAY REMAIN JUST EAST OF THE AIRPORT. LESSER THREAT OF STRATUS AT KCOS WITH NLY DRAINAGE WIND KEEPING CLOUDS AT BAY. EXPECT THICKENING/LOWERING ALTO-CUMULUS ON MONDAY...WITH SOME LIGHT -SHSN POSSIBLE AT KALS AFTER 16Z AND AT KPUB AND KCOS AFTER 18Z. && .PUB WATCHES/WARNINGS/ADVISORIES... WINTER STORM WATCH FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON FOR COZ066>071. WINTER STORM WATCH FROM MONDAY MORNING THROUGH MONDAY EVENING FOR COZ095>099. && 10/23
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PUEBLO CO 534 AM MST SUN DEC 9 2007 COZ058>089-093>099-101245- WESTERN MOSQUITO RANGE/EAST LAKE COUNTY ABOVE 11000 FT- LEADVILLE VICINITY/LAKE COUNTY BELOW 11000 FT- EASTERN SAWATCH MOUNTAINS ABOVE 11000 FT- WESTERN CHAFFEE COUNTY BETWEEN 9000 AND 11000 FT- CENTRAL CHAFFEE COUNTY BELOW 9000 FT- WESTERN MOSQUITO RANGE/EAST CHAFFEE COUNTY ABOVE 9000 FT- SAGUACHE COUNTY WEST OF CONTINENTAL DIVIDE BELOW 10000 FT- SAGUACHE COUNTY EAST OF CONTINENTAL DIVIDE BELOW 10000 FT- LA GARITA MOUNTAINS ABOVE 10000 FT- UPPER RIO GRANDE VALLEY/EASTERN SAN JUAN MOUNTAINS BELOW 10000 FT- EASTERN SAN JUAN MOUNTAINS ABOVE 10000 FT- DEL NORTE VICINITY/NORTHERN SAN LUIS VALLEY BELOW 8500 FT- ALAMOSA VICINITY/CENTRAL SAN LUIS VALLEY BELOW 8500 FT- SOUTHERN SAN LUIS VALLEY- NORTHERN SANGRE DE CRISTO MOUNTAINS BETWEEN 8500 AND 11000 FT- NORTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 11000 FEET- SOUTHERN SANGRE DE CRISTO MOUNTAINS BETWEEN 7500 AND 11000 FT- SOUTHERN SANGRE DE CRISTO MOUNTAINS ABOVE 11000 FT- NORTHWESTERN FREMONT COUNTY ABOVE 8500 FT- WESTERN/CENTRAL FREMONT COUNTY BELOW 8500 FT- WET MOUNTAIN VALLEY BELOW 8500 FEET- WET MOUNTAINS BETWEEN 6300 AND 10000 FT- WET MOUNTAINS ABOVE 10000 FT- TELLER COUNTY/RAMPART RANGE ABOVE 7500 FT/PIKES PEAK BETWEEN 7500 AND 11000 FT-PIKES PEAK ABOVE 11000 FT- CANON CITY VICINITY/EASTERN FREMONT COUNTY- NORTHERN EL PASO COUNTY/MONUMENT RIDGE/RAMPART RANGE BELOW 7500 FT- COLORADO SPRINGS VICINITY/SOUTHERN EL PASO COUNTY/RAMPART RANGE BELOW 7400 FT-PUEBLO AND VICINITY/PUEBLO COUNTY BELOW 6300 FT- WALSENBURG VICINITY/UPPER HUERFANO RIVER BASIN BELOW 7500 FT- TRINIDAD VICINITY/WESTERN LAS ANIMAS COUNTY BELOW 7500 FT- CROWLEY COUNTY-LA JUNTA VICINITY/OTERO COUNTY- EASTERN LAS ANIMAS COUNTY-WESTERN KIOWA COUNTY- EASTERN KIOWA COUNTY-LAS ANIMAS VICINITY/BENT COUNTY- LAMAR VICINITY/PROWERS COUNTY-SPRINGFIELD VICINITY/BACA COUNTY- 534 AM MST SUN DEC 9 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL...EAST CENTRAL...SOUTH CENTRAL AND SOUTHEAST COLORADO. .DAY ONE...TODAY AND TONIGHT THERE WILL BE ISOLATED SNOW SHOWERS OVER THE PLAINS AND SCATTERED SNOW SHOWERS OVER THE MOUNTAINS TODAY...MAINLY THIS MORNING. A FEW LOCATIONS IN THE MOUNTAINS MIGHT SEE SOME LIGHT SNOW ACCUMULATIONS OF AN INCH OR LESS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY ACCUMULATING SNOW IS EXPECTED TO BEGIN AGAIN IN THE SOUTHWEST MOUNTAINS LATE MONDAY...AND CONTINUE INTO TUESDAY NIGHT...WITH SIGNIFICANT ACCUMULATIONS POSSIBLE. ON TUESDAY THE CENTRAL MOUNTAINS WILL ALSO PROBABLY SEE SOME SNOW ACCUMULATION. IN THE WAKE OF A COLD FRONT ON TUESDAY OVER THE SOUTHEAST PLAINS...SNOW WILL BECOME WIDESPREAD...WITH A COUPLE TO A FEW INCHES OF ACCUMULATION POSSIBLE OVER THE PLAINS AND SOUTHEAST MOUNTAINS. SOME LIGHT ACCUMULATIONS MAY STILL BE POSSIBLE ON WEDNESDAY OVER THE CENTRAL AND SOUTHWEST MOUNTAINS. ANOTHER QUICK MOVING WEATHER SYSTEM MAY MOVE ACROSS THE AREA LATE THURSDAY AND THURSDAY NIGHT...POSSIBLY BRINGING SOME LIGHT SNOW ACCUMULATIONS TO THE MOUNTAINS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS WILL NOT BE NEEDED TODAY OR TONIGHT.
The national radar mosaic for the moment the first event began.
3 winter storm. Local standard time, as filed.
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, 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: 70050, 70052, 70053.