Alert archive / Colorado / High Wind Warnings in 2007

High Wind Warning 8, NWS Denver/Boulder, CO

December 23, 20077 counties in Colorado

NWS Denver/Boulder, CO issued this high wind warning at Dec 23, 2007, 2:29 AM MST for 7 counties in Colorado. It was in force for 5 hr. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Dec 23, 2007, 2:29 AM MST (09:29 UTC)
Expired
Dec 23, 2007, 7:57 AM MST
In force
5 hr
Issued by
NWS Denver/Boulder, CO

Counties Boulder County, CO, Clear Creek County, CO, Douglas County, CO, Gilpin County, CO, Jefferson County, CO, Larimer County, CO, Park County, CO

The radar

The Denver radar (KFTG), 74 km from the middle of the area, began a volume at 09:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Dec 23, 5:33 AM MSTNON-TSTM WND GST 834 Ene Bergen Park, CO
Dec 23, 5:40 AM MSTNON-TSTM WND GST 722 Sw Boulder, COREPORTED AT THE NCAR MESA LAB
Dec 23, 6:36 AM MSTNON-TSTM WND GST 803 Se Jamestown, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 9.5 hours before the alert went out and 187 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2007-12-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2007-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2672 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
206 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WWUS75 KBOU 230929
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
229 AM MST SUN DEC 23 2007

.FIERCE MOUNTAIN WINDS PRODUCING WHITEOUT CONDITIONS AND DANGEROUS
WIND CHILL READINGS...

COZ035>037-231500-
/O.NEW.KBOU.HW.W.0008.071223T0929Z-071223T1500Z/
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-
INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY...HARTSEL...
LAKE GEORGE...SOUTH PARK
229 AM MST SUN DEC 23 2007

...HIGH WIND WARNING IN EFFECT UNTIL 8 AM MST THIS MORNING FOR 
THE FRONT RANGE FOOTHILLS AND SOUTH PARK IN NORTH CENTRAL COLORADO...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SHORT FUSED HIGH
WIND WARNING...WHICH IS NOW IN EFFECT UNTIL 8 AM MST THIS MORNING.

VERY STRONG WEST TO NORTHWEST WINDS IN THE FRONT RANGE FOOTHILLS
AND AND ACROSS NORTHERN PORTIONS OF SOUTH PARK WILL LIKELY
CONTINUE THROUGH EARLY THIS SUNDAY MORNING. WIND GUSTS TO AS HIGH
AS 109 MPH WAS RECORDED NEAR FAIRPLAY IN NORTH PARK SHORTLY BEFORE
2 AM THIS MORNING. AT THE PRESENT TIME...U.S. HIGHWAY 285 ACROSS
NORTHERN PARK COUNTY IN NORTH CENTRAL COLORADO REMAINS CLOSED DUE
TO EXTENSIVE BLOWING AND DRIFTING OF SNOW AND VERY LOW VISIBILITIES.

SIMILAR WIND GUSTS HAVE ALSO BEEN OBSERVED IN THE FRONT RANGE
FOOTHILLS OF BOULDER...JEFFERSON AND LARIMER COUNTIES. AT 1:18 AM
THIS MORNING A WIND GUST TO 89 MPH WAS RECORDED ON A WIND MONITOR
AT ROCKY FLATS IN EXTREME NORTHERN JEFFERSON COUNTY...OR ABOUT 10
MILES SOUTH OF BOULDER. WEATHER SPOTTERS HAVE ALSO REPORTED TO THE
NATIONAL WEATHER SERVICE VERY POOR DRIVING CONDITIONS DUE TO
BLOWING AND DRIFTING SNOW ALONG HIGHWAY 93 BETWEEN GOLDEN AND
BOULDER.

WIND GUSTS FROM 60 TO 90 MPH SHOULD BE EXPECTED IN THE AREA COVERED
BY THIS HIGH WIND WARNING UNTIL AROUND 8 AM THIS SUNDAY MORNING.

REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY
DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY.

$$
BAKER
1 follow-up statement
000 
WWUS75 KBOU 231457
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER CO
757 AM MST SUN DEC 23 2007

COZ035>037-231600-
/O.CAN.KBOU.HW.W.0008.000000T0000Z-071223T1500Z/
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-
INCLUDING...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...FAIRPLAY...HARTSEL...
LAKE GEORGE...SOUTH PARK
755 AM MST SUN DEC 23 2007

...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN DENVER HAS CANCELLED THE HIGH
WIND WARNING. 

WHILE GUSTY WINDS WILL CONTINUE THROUGH THE REST OF THE
MORNING...WIND SPEEDS WILL HOLD BELOW HIGH WIND CRITERIA.

WIND SPEEDS OF 20 AND 30 MPH WILL BE COMMON...WITH GUSTS UP TO 60
MPH. THE STRONG WINDS WILL STILL PRODUCE AREAS OF BLOWING AND
DRIFTING SNOW.

PEAK WINDS FROM THIS EVENT INCLUDE...

109 MPH NEAR THE TOWN OF JEFFERSON IN PARK COUNTY.
89 MPH AT THE WIND TECHNOLOGY CENTER NEAR ROCKY FLATS.
72 MPH AT THE NCAR MESA LAB SOUTHWEST OF BOULDER.
 
$$

BARJENBRUCH

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 23, 5:20 AM MSTSnow and Blowing Snow AdvisoryBOUBoulder, Clear Creek, Gilpin, Grand, Jackson, Jefferson and 3 more6 hr

Nearby

High Wind Warnings in Colorado, 2007Every high wind warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.