1 high wind, as filed by the National Weather Service.
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 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 Denver/Boulder, CO wrote its last area forecast discussion before the first event at Dec 27, 3:05 AM MST, 5 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DENVER CO 305 AM MST TUE DEC 27 2005 .SHORT TERM....TDA-TNGT...UPR TROF IS MOVG ACRS CNTRL RCKYS EARLY THIS MRNG. MDLS HAVE SYS MOVG ACRS DEN AT ABT 15Z. FOR THIS REASON WILL GENLY LIMIT SLGT CHC OF SHWRS ON PLAINS TO THIS MRNG BUT WILL LEAVE MENTION OF SHWRS NR ERN BRDR THIS AFTN. STG SUBSIDENCE BEHIND UPR TROF BY ARND MIDDAY WILL PRODUCE STG AND GUSTY WNDS ALG ERN SLPS AND OVR ERN PLAINS. ETA12 MDL SFC WND SPDS WILL APPROACH HI WND CRITERIA ON PLAINS FOR A FEW HOURS ARND MIDDAY AND INTO EARLY AFTN. GFS WNDS ARE NOT AS STG. RADAR LOOP SHWS SNW IN MTNS TO BE RATHER SPARSE BUT WILL KEEP SNW AND BLWG SNW ADV FOR MTNS GOING UNTIL NOON...BUT WILL DROP ADV FOR HI MTN VLYS WHERE SNW AMTS WILL BE LIGHTER AND WNDS NOT NR AS STG. SNW WILL BEGIN TO DECREASE IN MTNS THIS AFTN AND WILL LEAVE SCT SHWRS OVR HI MTNS THRU TNGT. WITH COOLING ALF HI TEMPS WILL BE COOLER TDA. WRMG ALF WILL BEGIN TNGT AS UPR RDG BEGINS TO BUILD OVR CNTRL RCKYS. WILL MAKE ONLY SML ADJUSTMENTS TO MOS TEMP VALUES. .LONG TERM DISCUSSION...BOTH THE GFS AND NAM ARE FAIRLY CONSISTENT IN THE TIMING OF THE OVERALL FEATURES THROUGH THURSDAY. FOR WEDNESDAY...THE UPPER RIDGE AXIS WILL BE OVER THE INTERMOUNTAIN REGION WITH A NWLY FLOW OVR CO. QG OMEGA OVR COLORADO WILL BE DOWNWARD THROUGH THE DAY AND ALTHOUGH THE DIRECTION IS FVBL FOR OROGRPHICS THE WIND SPEEDS AT 700 MB ONLY AROUND 20 KTS WITH WAA IN PLACE. WAA IN THE MID LEVELS SHOULD BE SNOW COVERAGE ON THE LOW SIDE IN THE MTNS SO WL KEEP SLGT CHC ALREADY IN THE ZONES. THE UPPER RIDGE AXIS IS PROGGED TO SHIFT E OF COLORADO LATE WEDNEADAY NIGHT INTO THURSDAY MORNING...AS THE NEXT SYSTEM BRUSHES ACROSS NRN COLORADO. MOST FVBL QG OMEGA OCCURS AFTER 06Z-12Z THURSDAY. MSTR LAYER MUCH DEEPER IN THE MTNS AS WELL WITH STG WSWLY WINDS AT 700 MB. TREND FOR INCREASING POPS WEDNESDAY NIGHT INTO THURSDAY STILL LOOKS ON TRACK. THERE IS A FRONTAL PASSAGE ASSOCIATED WITH THIS SYSTEM AFTER 12Z THURSDAY...BUT LITTLE IF ANY UPSLOPE COMPONENT WITH IT. FOR NOW WL KEEP POPS OUT OF THE GRIDS FOR THE NORTHEAST PLAINS. QG OMEGA AGAIN SUBSIDENT FOLLOWING THE PASSAGE OF THE UPPER TROF THURSDAY AFTN AND EVENING...BUT LINGERING OROGRAPHICS IN FVBL NWLY FLOW SHOULD MAKE FOR AT LEAST A CHANCE OF SNOW IN THE MOUNTAINS. THE THREAT FOR PCPN WILL REMAIN CONFINED TO THE MOUNTAINS UNTIL SUNDAY AFTN/SUNDAH NIGHT...WHEN ANOTHER SYSTEM IS PROGGED TO MAKES ITS WAY INTO THE STATE. WL KEEP THE SLGT CHC I INHERITED FOR THE PLAINS AT THIS TIME...AS IT STILL LOOKS ON TRACK. && .BOU WATCHES/WARNINGS/ADVISORIES...SNOW AND BLOWING SNOW ADVISORY NORTHERN MOUNTAINS UNTIL NOON TUESDAY...ZONES 31..33..AND 34. && GARD/COOPER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DENVER CO 450 AM MST TUE DEC 27 2005 COZ030>051-271800- JACKSON COUNTY BELOW 9000 FEET-WEST JACKSON AND WEST GRAND COUNTIES ABOVE 9000 FEET-GRAND AND SUMMIT COUNTIES BELOW 9000 FEET-SOUTH AND EAST JACKSON/LARIMER/NORTH AND NORTHEAST GRAND/ NORTHWEST BOULDER COUNTIES ABOVE 9000 FEET-SOUTH AND SOUTHEAST GRAND/WEST CENTRAL AND SOUTHWEST BOULDER/GILPIN/CLEAR CREEK/ SUMMIT/NORTH AND WEST PARK COUNTIES ABOVE 9000 FEET-LARIMER AND BOULDER COUNTIES BETWEEN 6000 AND 9000 FEET-JEFFERSON AND WEST DOUGLAS COUNTIES ABOVE 6000 FEET/GILPIN/CLEAR CREEK/NORTHEAST PARK COUNTIES BELOW 9000 FEET-CENTRAL AND SOUTHEAST PARK COUNTY-LARIMER COUNTY BELOW 6000 FEET/NORTHWEST WELD COUNTY-BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD COUNTY-NORTH DOUGLAS COUNTY BELOW 6000 FEET/DENVER/WEST ADAMS AND ARAPAHOE COUNTIES/ EAST BROOMFIELD COUNTY-ELBERT/CENTRAL AND EAST DOUGLAS COUNTIES ABOVE 6000 FEET-NORTHEAST WELD COUNTY-CENTRAL AND SOUTH WELD COUNTY-MORGAN COUNTY-CENTRAL AND EAST ADAMS AND ARAPAHOE COUNTIES- NORTH AND NORTHEAST ELBERT COUNTY BELOW 6000 FEET/NORTH LINCOLN COUNTY-SOUTHEAST ELBERT COUNTY BELOW 6000 FEET/SOUTH LINCOLN COUNTY-LOGAN COUNTY-WASHINGTON COUNTY-SEDGWICK COUNTY-PHILLIPS COUNTY- 450 AM MST TUE DEC 27 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND NORTH CENTRAL COLORADO. .DAY ONE...TODAY AND TONIGHT OCCASIONAL LIGHT TO MODERATE SNOW AND STRONG WEST TO NORTHWEST WINDS AT SPEEDS OF 20 TO 30 MPH WITH GUSTS TO 45 MPH WILL PRODUCE AREAS OF BLOWING SNOW IN THE MOUNTAINS THIS MORNING. THE SNOW AND WINDS WILL DECREASE DURING THE AFTERNOON. ONLY SCATTERED SNOW SHOWERS ARE EXPECTED IN THE MOUNTAINS OVERNIGHT. ON THE PLAINS THERE WILL BE A SLIGHT CHANCE OF RAIN OR SNOW SHOWERS MAINLY THIS MORNING. STRONG AND GUSTY NORTHWEST WINDS AT SPEEDS OF 20 TO 35 MPH WITH GUSTS AS HIGH AS 55 MPH MAY PRODUCE LOCAL BLOWING DUST ON THE PLAINS FROM AROUND MIDDAY THROUGH MID AFTERNOON. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ANOTHER PERIOD OF STRONG GUSTY WINDS AND ACCUMULATING MOUNTAIN SNOWFALL CAN BE EXPECTED LATE WEDNESDAY NIGHT AND THURSDAY. IT WILL BE DRIER ON FRIDAY AND SATURDAY...WITH ANOTHER CHANCE OF SNOW AND GUSTY WINDS EXPECTED ON SUNDAY AND SUNDAY NIGHT. A SERIES OF FAST MOVING STORM SYSTEMS WILL BRING THE GUSTY WINDS AND SNOWFALL TO THE MOUNTAINS OF NORTH CENTRAL COLORADO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. GARD/COOPER
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
A trained observer in Georgetown registered a peak wind gust of 94 mph (82 kts).
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Colorado in 2005Every state in 2005This day in weather historyWarnings in Colorado, December 2005
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: 5482653.