Alert archive / Wyoming / High Wind Warnings in 2015

High Wind Warning 29, NWS Cheyenne, WY

December 23, 20154 counties in Wyoming

NWS Cheyenne, WY issued this high wind warning at Dec 23, 2015, 12:33 PM MST for 4 counties in Wyoming. It took effect at Dec 23, 2015, 7:00 PM MST. It was in force for 7 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: Dec 23, 2015, 12:33 PM MST (19:33 UTC)
In effect from: Dec 23, 2015, 7:00 PM MST
Expired: Dec 24, 2015, 1:33 AM MST
In force: 7 hr
Issued by: NWS Cheyenne, WY

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

The radar

The Cheyenne radar (KCYS), 88 km from the middle of the area, began a volume at 19:29 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

Riverton, WY (KRIW), launched 12:00Z, 7.6 hours before the alert went out and 278 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1732 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 109 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.

192 
WWUS75 KCYS 231933
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
1233 PM MST WED DEC 23 2015

...STRONG WINDS IN THE WIND PRONE AREAS TONIGHT...

.STRONG WINDS ARE INCREASINGLY LIKELY TONIGHT AS A WEATHER
DISTURBANCE MOVES SOUTHEAST ACROSS THE FORECAST AREA. THE PRESSURE
GRADIENT WILL STRENGTHEN RAPIDLY AS SURFACE HIGH PRESSURE BUILDS
OVER THE GREAT DIVIDE BASIN IN THE WAKE OF THE DISTURBANCE...WHILE
THE LEESIDE PRESSURE TROUGH DEEPENS AHEAD OF THE WAVE. WINDS ALOFT
WILL BECOME STRONG AS THE GRADIENT STRENGTHENS...AND WITH THE HELP
OF SUBSIDENCE IN THE WAKE OF THE DEPARTING DISTURBANCE...THESE
STRONG WINDS WILL LIKELY BE FORCED DOWN TO THE SURFACE IN THE
WIND PRONE AREAS OF SOUTHEAST WYOMING. THIS INCLUDES THE I-80
CORRIDOR IN THE ARLINGTON AREA AND FROM LARAMIE TO CHEYENNE...AND
THE I- 25 CORRIDOR FROM WHITAKER TO WHEATLAND.

WYZ106-110-116-117-241200-
/O.UPG.KCYS.HW.A.0024.151224T0200Z-151224T1200Z/
/O.NEW.KCYS.HW.W.0029.151224T0200Z-151224T1200Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTH LARAMIE RANGE-
SOUTH LARAMIE RANGE FOOTHILLS-
INCLUDING THE CITIES OF...BORDEAUX...ARLINGTON...ELK MOUNTAIN...
VEDAUWOO...BUFORD...PUMPKIN VINE...HORSE CREEK...HARRIMAN...
WHITAKER
1233 PM MST WED DEC 23 2015

...HIGH WIND WARNING IN EFFECT FROM 7 PM THIS EVENING TO 5 AM MST
THURSDAY...

THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO 5 AM MST
THURSDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. 

* TIMING...WINDS WILL INCREASE THIS EVENING...AND WILL BE STRONG
  AT TIMES THROUGH EARLY THURSDAY MORNING.

* WINDS...WEST TO NORTHWEST 35 TO 45 MPH WITH GUSTS TO 65 MPH 
  ARE POSSIBLE. 

* IMPACTS...MAINLY TO TRANSPORTATION. TRAVEL WILL BE HAZARDOUS 
  TO LIGHT WEIGHT AND HIGH PROFILE VEHICLES...ESPECIALLY ON 
  NORTH TO SOUTH ORIENTED ROADS. THERE IS AN ENHANCED RISK FOR 
  VEHICLE BLOW OVERS IN THE WATCH AREA. LOCAL AREAS OF BLOWING 
  SNOW ARE POSSIBLE AS WELL...WITH REDUCED VISIBILITIES AND 
  SLICK ROADS. 

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.

&&

$$

RUBIN

1 follow-up statement

706 
WWUS75 KCYS 240833
NPWCYS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHEYENNE WY
133 AM MST THU DEC 24 2015

WYZ106-110-116-117-240945-
/O.CAN.KCYS.HW.W.0029.000000T0000Z-151224T1200Z/
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTH LARAMIE RANGE-
SOUTH LARAMIE RANGE FOOTHILLS-
INCLUDING THE CITIES OF...BORDEAUX...ARLINGTON...ELK MOUNTAIN...
VEDAUWOO...BUFORD...PUMPKIN VINE...HORSE CREEK...HARRIMAN...
WHITAKER
131 AM MST THU DEC 24 2015

...HIGH WIND WARNING IS CANCELLED...

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

WINDS LOOK TO REMAIN BELOW HIGH WIND THRESHOLDS FOR THE REMAINDER
OF THE NIGHT SO WILL CANCEL THE HIGH WIND WARNING. CANT RULE OUT
OCCASIONAL GUSTS AS HIGH AS 50 MPH IN THE WIND PRONE AREAS THROUGH
SUNRISE...BUT EXPECT MAINLY 30 TO 40 MPH GUSTS THROUGH THIS TIME.
 
$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 23, 3:12 AM MST	High Wind Watch	CYS	Albany, Carbon, Laramie, Platte	9 hr
Dec 23, 4:49 PM MST	Winter Weather Advisory	CYS	Albany, Carbon	3 hr

Nearby

High Wind Warnings in Wyoming, 2015 Every high wind warning in 2015

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.