Alert archive / Wyoming / High Wind Warnings in 2012

High Wind Warning 46, NWS Cheyenne, WY

December 20, 2012Albany County, Laramie County, Platte County, Wyoming

NWS Cheyenne, WY issued this high wind warning at Dec 20, 2012, 7:38 AM MST for Albany County, Laramie County, Platte County, Wyoming. It was in force for 7 hr. 14 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 20, 2012, 7:38 AM MST (14:38 UTC)
Expired
Dec 20, 2012, 3:00 PM MST
In force
7 hr
Issued by
NWS Cheyenne, WY

Counties Albany County, WY, Laramie County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 66 km from the middle of the area, began a volume at 14:42 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 20, 8:31 AM MSTNON-TSTM WND GST 5210 Sw Cheyenne, WY40 MPH SUSTAINED WITH VSBY OF 1.10 MI
Dec 20, 9:20 AM MSTNON-TSTM WND GST 5410 Sw Cheyenne, WY44 MPH SUSTAINED.
Dec 20, 9:40 AM MSTNON-TSTM WND GST 5023 W Cheyenne, WY41 MPH SUSTAINED.
Dec 20, 10:00 AM MSTNON-TSTM WND GST 51Bordeaux, WYSUSTAINED AT 41 MPH.
Dec 20, 10:30 AM MSTNON-TSTM WND GST 5010 Sw Cheyenne, WY41 MPH SUSTAINED
Dec 20, 10:30 AM MSTNON-TSTM WND GST 56Bordeaux, WY42 MPH SUSTAINED.
Dec 20, 11:00 AM MSTNON-TSTM WND GST 59Bordeaux, WY49 MPH SUSTAINED
Dec 20, 11:40 AM MSTNON-TSTM WND GST 5810 Sw Cheyenne, WY45 MPH SUSTAINED
Dec 20, 12:45 PM MSTNON-TSTM WND GST 5810 Wsw Warren Af Base, WYREPORTED AT MESOWEST STATION UP226
Dec 20, 12:47 PM MSTNON-TSTM WND GST 55Vedauwoo, WYREPORTED AT WYDOT STATION KVDW
Dec 20, 1:10 PM MSTNON-TSTM WND GST 666 Sw South Greeley High, WYREPORTED AT WYDOT STATION KWYH
Dec 20, 1:20 PM MSTNON-TSTM WND GST 651 Sse Bordeaux, WYREPORTED AT WYDOT STATION KBRX
Dec 20, 2:30 PM MSTNON-TSTM WND GST 641 Sse Bordeaux, WYREPORTED AT WYDOT STATION KBRX
Dec 20, 3:10 PM MSTNON-TSTM WND GST 661 Sse Bordeaux, WYREPORTED AT WYDOT STATION KBRX

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 12:00Z, 2.6 hours before the alert went out and 259 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 12:00Z on 2012-12-20Temperature 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 12:00Z on 2012-12-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 290 square meters per square second.1939587897117Sfc1 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
2600 m above ground
0-6 km bulk shear
97 kt
0-1 km storm-relative helicity
290 m²/s²
0-3 km storm-relative helicity
295 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.

778 
WWUS75 KCYS 201438
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
738 AM MST THU DEC 20 2012

...STRONG WINDS WILL CONTINUE BETWEEN CHUGWATER AND WHEATLAND
THE REST OF THE MORNING...

.A LARGE DIFFERENCE IN SURFACE PRESSURE ACROSS SOUTHEAST 
WYOMING WILL CONTINUE THROUGH THE MORNING. THE RESULT WILL BE
STRONG WINDS DURINGTHAT TIME BETWEEN CHUGWATER AND WHEATLAND.

WYZ106-201900-
/O.NEW.KCYS.HW.W.0046.121220T1438Z-121220T1900Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
INCLUDING THE CITY OF...BORDEAUX
738 AM MST THU DEC 20 2012

...HIGH WIND WARNING IN EFFECT UNTIL NOON MST TODAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL NOON MST TODAY. 

* TIMING...THROUGH NOON.

* WINDS...WEST TO SOUTHWEST 35 TO 45 MPH WITH GUSTS TO 60 MPH.

* IMPACTS...THE STRONG WINDS WILL PRODUCE HAZARDOUS TRAVEL
  CONDITIONS FOR THOSE WITH LIGHTWEIGHT OR HIGH PROFILE VEHICLES
  TRAVELING ON INTERSTATE 25 BETWEEN CHUGWATER AND WHEATLAND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. FOR DETAILED ROAD
AND TRAVEL CONDITIONS IN WYOMING AND NEBRASKA...DIAL 5 1 1.

&&

$$

WEILAND
2 follow-up statements
376 
WWUS75 KCYS 201854
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1154 AM MST THU DEC 20 2012

...STRONG WINDS WILL CONTINUE BETWEEN CHUGWATER AND WHEATLAND 
TROUGH MID AFTERNOON...

.A LARGE DIFFERENCE IN SURFACE PRESSURE ACROSS SOUTHEAST WYOMING
WILL CONTINUE THROUGH MID AFTERNOON. THE RESULT WILL BE STRONG 
WINDS DURING THAT TIME BETWEEN CHUGWATER AND WHEATLAND.

WYZ106-202200-
/O.EXT.KCYS.HW.W.0046.000000T0000Z-121220T2200Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
INCLUDING THE CITY OF...BORDEAUX
1154 AM MST THU DEC 20 2012

...HIGH WIND WARNING NOW IN EFFECT UNTIL 3 PM MST THIS
AFTERNOON...

THE HIGH WIND WARNING IS NOW IN EFFECT UNTIL 3 PM MST THIS
AFTERNOON. 

* TIMING...THROUGH 3 PM.

* WINDS...WEST TO SOUTHWEST 35 TO 45 MPH WITH GUSTS TO 60 MPH.

* OBSERVED WINDS...WINDS GUSTED TO 59 MPH AT THE INTERSTATE 25
  BORDEAUX EXIT AT 11 AM AND WERE SUSTAINED AT 49 MPH.  

* IMPACTS...THE STRONG WINDS WILL PRODUCE HAZARDOUS TRAVEL 
  CONDITIONS FOR THOSE WITH LIGHTWEIGHT OR HIGH PROFILE VEHICLES 
  TRAVELING ON INTERSTATE 25 BETWEEN CHUGWATER AND WHEATLAND. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. FOR DETAILED ROAD
AND TRAVEL CONDITIONS IN WYOMING AND NEBRASKA...DIAL 5 1 1.

&&

$$

WEILAND
978 
WWUS75 KCYS 202207
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
307 PM MST THU DEC 20 2012

...WINDS DECREASING ACROSS SOUTHEAST WYOMING...

.THE WEST WINDS HAVE BEGUN TO DECREASE FOR AREAS ALONG AND EAST OF THE
LARAMIE RANGE IN SOUTHEAST WYOMING. HOWEVER...WIND GUSTS TO 55 MPH
WILL CONTINUE TO BE POSSIBLE THROUGH THE EARLY EVENING ACROSS THE
BORDEAUX AREA.

WYZ106-202315-
/O.EXP.KCYS.HW.W.0046.000000T0000Z-121220T2200Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
INCLUDING THE CITY OF...BORDEAUX
307 PM MST THU DEC 20 2012

...HIGH WIND WARNING HAS EXPIRED...

THE HIGH WIND WARNING IS NO LONGER IN EFFECT. 

THE WINDY CONDITIONS ALONG AND EAST OF THE LARAMIE RANGE IN
SOUTHEAST WYOMING HAVE BEGUN TO DIMINISH. THE SURFACE PRESSURE
GRADIENT WILL CONTINUE TO REMAIN ELEVATED THROUGH THE EARLY
EVENING WITH GUSTS TO 55 MPH POSSIBLE IN THE WIND PRONE AREA OF
BORDEAUX.

$$

FINCH

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 20, 11:57 AM MSTWinter Weather AdvisoryCYSAlbany, Laramie3 hr

Nearby

High Wind Warnings in Wyoming, 2012Every high wind warning in 2012

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.