Alert archive / Colorado / High Wind Warnings in 2013

High Wind Warning 3, NWS Denver/Boulder, CO

October 31, 20138 counties in Colorado

NWS Denver/Boulder, CO issued this high wind warning at Oct 31, 2013, 8:57 PM MDT for 8 counties in Colorado. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 31, 2013, 8:57 PM MDT (02:57 UTC)
Expired
Nov 1, 2013, 2:10 AM MDT
In force
5 hr
Issued by
NWS Denver/Boulder, CO

Counties Boulder County, CO, Broomfield 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), 70 km from the middle of the area, began a volume at 03:00 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.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 3.0 hours before the alert went out and 183 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 2013-11-01Temperature 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 2013-11-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 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
2433 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
51 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.

105 
WWUS75 KBOU 010257
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
857 PM MDT THU OCT 31 2013

...STRONG WINDS IN THE FRONT RANGE FOOTHILLS TONIGHT...

.STRONG NORTHWEST WINDS ALOFT MOVING OVER COLORADO TONIGHT ARE
EXPECTED TO CAUSE STRONG WINDS ALONG THE COLORADO FRONT RANGE
FOOTHILLS THROUGH THE REST OF THIS EVENING. WIND GUSTS OF 64 MPH
AND 73 MPH HAVE BEEN REPORTED AT THE NATIONAL WIND TECHNOLOGY
CENTER AND THE NCAR MESA LABORATORIES EARLIER THIS EVENING. THOUGH
WINDS HAVE DIMINISHED SLIGHTLY SINCE 8 PM...THEY ARE EXPECTED TO
INCREASE AGAIN BY 10 PM AND THEN CONTINUE THROUGH THE EARLY
MORNING HOURS. 

COZ035-036-039-011100-
/O.NEW.KBOU.HW.W.0003.131101T0300Z-131101T1200Z/
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-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...ARVADA...BOULDER...
GOLDEN...LAKEWOOD...LONGMONT
857 PM MDT THU OCT 31 2013

...HIGH WIND WARNING IN EFFECT UNTIL 6 AM MDT FRIDAY...

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 6 AM MDT FRIDAY. 

* TIMING...WINDS WILL STRENGTHEN BETWEEN 9 PM AND 11 PM AND
  CONTINUE THROUGH 2 AM BEFORE BEGINNING TO DIMINISH.

* WINDS...WEST WINDS AT 40 TO 60 MPH WITH WIND GUSTS UP TO 80 MPH
  ARE EXPECTED BETWEEN 10 PM AND 2 AM. 

* IMPACTS...STRONG WINDS WILL BLOW AROUND LIGHTWEIGHT AND
  UNSECURED ITEMS...LIKE TRASH CANS AND PATIO FURNITURE. STRONG
  CROSS-WINDS MAY BE HAZARDOUS FOR LIGHTWEIGHT AND HIGH-PROFILE
  VEHICLES TRAVELING ON NORTH-SOUTH HIGHWAYS...LIKE THE PEAK-TO-
  PEAK HIGHWAY AND HIGHWAY 93 BETWEEN BOULDER AND GOLDEN. TREE
  BRANCHES FALLING ONTO POWER LINES MAY CAUSE SOME POWER OUTAGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A HIGH WIND WARNING MEANS THAT STRONG AND POTENTIALLY
DAMAGING WINDS ARE EITHER OCCURRING OR HIGHLY LIKELY. RESIDENTS
SHOULD MOVE TRASH CANS...PATIO FURNITURE...AND ANY OTHER ITEMS
EASILY TOSSED ABOUT BY HIGH WINDS INDOORS. MOTORISTS TRAVELING IN
HIGH PROFILE VEHICLES SHOULD CONSIDER DELAYING TRAVEL UNTIL THE
WINDS SUBSIDE.

&&

$$
1 follow-up statement
743 
WWUS75 KBOU 010810
NPWBOU

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
210 AM MDT FRI NOV 1 2013

COZ035-036-039-010915-
/O.CAN.KBOU.HW.W.0003.000000T0000Z-131101T1200Z/
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-
BOULDER AND JEFFERSON COUNTIES BELOW 6000 FEET/WEST BROOMFIELD
COUNTY-
INCLUDING THE CITIES OF...ESTES PARK...GLENDEVEY...NEDERLAND...
RED FEATHER LAKES...BAILEY...CENTRAL CITY...EVERGREEN...
GEORGETOWN...IDAHO SPRINGS...WESTCREEK...ARVADA...BOULDER...
GOLDEN...LAKEWOOD...LONGMONT
210 AM MDT FRI NOV 1 2013

...HIGH WIND WARNING IS CANCELLED...

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

WINDS HAVE DIMINISHED OVER THE FRONT RANGE FOOTHILLS DURING THE
NIGHT. OCCASIONAL WIND GUSTS IN THE 40 TO 50 MPH RANGE ARE STILL
POSSIBLE...BUT THE STRONGEST WINDS WILL MAINLY BE OVER THE HIGHER
ELEVATIONS OF THE FRONT RANGE FOR THE REST OF THE NIGHT.

$$

GIMMESTAD

Nearby

High Wind Warnings in Colorado, 2013Every high wind warning in 2013

Sources

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