Alert archive / Wyoming / High Wind Warnings in 2012

High Wind Warning 15, NWS Cheyenne, WY

February 29, 2012Albany County, Laramie County, Platte County, Wyoming

NWS Cheyenne, WY issued this high wind warning at Feb 29, 2012, 1:04 PM MST for Albany County, Laramie County, Platte County, Wyoming. It was in force for 2 hr. 1 report 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
Feb 29, 2012, 1:04 PM MST (20:04 UTC)
Expired
Feb 29, 2012, 3:11 PM MST
In force
2 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 20:08 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
Feb 29, 1:30 PM MSTNON-TSTM WND GST 6014 Wsw Cheyenne, WYTHIS IS EMKAY UP 226. SUSTAINED WIND 48 MPH.

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, 8.1 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 2012-02-29Temperature 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 2012-02-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 167 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
2479 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
167 m²/s²
0-3 km storm-relative helicity
421 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.

688 
WWUS75 KCYS 292004
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
104 PM MST WED FEB 29 2012

...HIGH WIND WARNING IN EFFECT UNTIL 4 PM MST THIS AFTERNOON...

.A TIGHT SURFACE PRESSURE GRADIENT WILL MAINTAINS STRONG AND 
GUSTY WEST TO SOUTHWEST WINDS FOR PORTIONS OF SOUTHEAST WYOMING
THROUGH EARLY THIS AFTERNOON.

WYZ106-116-117-292300-
/O.EXP.KCYS.HW.W.0014.000000T0000Z-120229T2000Z/
/O.NEW.KCYS.HW.W.0015.120229T2004Z-120229T2300Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
INCLUDING THE CITIES OF...BORDEAUX...VEDAUWOO...BUFORD...
PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER
104 PM MST WED FEB 29 2012

...HIGH WIND WARNING IN EFFECT UNTIL 4 PM MST THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT UNTIL 4 PM MST THIS AFTERNOON.

* TIMING...STRONG AND GUSTY WINDS WILL PERSIST THROUGH MID
  AFTERNOON THEN DIMINISH.

* WINDS...WEST TO SOUTHWEST 35 TO 45 MPH WITH GUSTS TO 65 MPH.

* IMPACTS...THE STRONG CROSS WINDS WILL CREATE HAZARDOUS TRAVEL
  CONDITIONS...ESPECIALLY FOR MOTORISTS IN HIGH PROFILE OR LIGHT
  WEIGHT VEHICLES. THERE WILL BE A BLOW OVER RISK FOR THESE
  VEHICLES TRAVELING ALONG INTERSTATE 25 NEAR THE BORDEAUX EXIT.

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.

&&

$$

WYZ110-118-292115-
/O.EXP.KCYS.HW.W.0014.000000T0000Z-120229T2000Z/
NORTH SNOWY RANGE FOOTHILLS-CENTRAL LARAMIE COUNTY-
INCLUDING THE CITIES OF...ARLINGTON...ELK MOUNTAIN...CHEYENNE
104 PM MST WED FEB 29 2012

...HIGH WIND WARNING HAS EXPIRED...

THE HIGH WIND WARNING IS NO LONGER IN EFFECT. 

WHILE HIGH WINDS ARE NO LONGER EXPECTED...SUSTAINED WEST TO
SOUTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS TO 55 MPH WILL
CONTINUE THROUGH MID AFTERNOON BEFORE DIMINISHING.

$$

JAMSKI
1 follow-up statement
204 
WWUS75 KCYS 292211
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
311 PM MST WED FEB 29 2012

...HIGH WIND WARNING IS CANCELLED...

.WESTERLY WINDS HAVE DIMINISHED BELOW HIGH WIND CRITERIA. 
SUSTAINED WIND SPEEDS OF 30 TO 40 MPH WITH GUSTS OF 45 TO 55 
MPH WILL CONTINUE THROUGH LATE THIS AFTERNOON.

WYZ106-116-117-292315-
/O.CAN.KCYS.HW.W.0015.000000T0000Z-120229T2300Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
INCLUDING THE CITIES OF...BORDEAUX...VEDAUWOO...BUFORD...
PUMPKIN VINE...HORSE CREEK...HARRIMAN...WHITAKER
311 PM MST WED FEB 29 2012

...HIGH WIND WARNING IS CANCELLED...

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

WITH THE GRADUAL DECREASE OF THE SURFACE PRESSURE GRADIENT...
WESTERLY WINDS HAVE BEGUN TO DIMINISH BELOW HIGH WIND CRITERIA.
THERE WILL STILL BE OCCASIONAL GUSTS TO 55 MPH...ESPECIALLY ALONG
INTERSTATE 25 BETWEEN CHUGWATER AND WHEATLAND...INCLUDING THE
BORDEAUX EXIT.

$$

JAMSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 29, 2:14 PM MSTWinter Weather AdvisoryCYSAlbany, Carbon25 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.