Alert archive / Wyoming / High Wind Warnings in 2017

High Wind Warning 41, NWS Cheyenne, WY

December 8, 2017Albany County, Laramie County, Wyoming

NWS Cheyenne, WY issued this high wind warning at Dec 8, 2017, 9:58 AM MST for Albany County, Laramie County, Wyoming. It was in force for 5 hr. 6 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 8, 2017, 9:58 AM MST (16:58 UTC)
Expired: Dec 8, 2017, 2:52 PM MST
In force: 5 hr
Issued by: NWS Cheyenne, WY

Counties Albany County, WY, Laramie County, WY

The radar

The Cheyenne radar (KCYS), 50 km from the middle of the area, began a volume at 16:58 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

Time	Report	Where	Remark
Dec 8, 10:55 AM MST	NON-TSTM WND GST 58	Pine Bluffs, WY	PINE BLUFFS AWOS. SUSTAINED AT 41 MPH.
Dec 8, 11:00 AM MST	HIGH SUST WINDS 40	2 Wnw Buford, WY	BUFORD UPR SENSOR. AVERAGE SUSTAINED WINDS BETWEEN 10 AM AND 11 AM MST.
Dec 8, 11:30 AM MST	HIGH SUST WINDS 40	10 Sw Cheyenne, WY	WYO HILL WYDOT SENSOR. AVERAGE SUSTAINED WIND FOR PAST HOUR ENDING AT 1130 AM MST. PEAK GUST 53 MPH.
Dec 8, 11:55 AM MST	NON-TSTM WND GST 58	2 Ne Granite Springs Re, WY	WILDCAT TRAIL WYDOT SENSOR. SUSTAINED AT 38 MPH.
Dec 8, 12:00 PM MST	NON-TSTM WND GST 66	2 Ne Granite Springs Re, WY	WILDCAT TRAIL WYDOT SENSOR. SUSTAINED AT 45 MPH.
Dec 8, 12:07 PM MST	NON-TSTM WND GST 53	Cheyenne, WY

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

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 5.0 hours before the alert went out and 245 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: 2699 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 230 m²/s²
0-3 km storm-relative helicity: 426 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

799 
WWUS75 KCYS 081658
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
958 AM MST Fri Dec 8 2017

...Strong Winds Along Interstate 80 Between Laramie and the
Nebraska State Line...

WYZ116>119-090000-
/O.NEW.KCYS.HW.W.0041.171208T1658Z-171209T0000Z/
South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, Horse Creek, Cheyenne, and Pine Bluffs
958 AM MST Fri Dec 8 2017

...HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON...

The National Weather Service in Cheyenne has issued a High Wind
Warning, which is in effect until 5 PM MST this afternoon. 

* TIMING...Until 5 PM MST today. 

* WINDS...West to Northwest 35 to 45 MPH with gusts to 60 MPH.

* IMPACTS...Mainly to transportation. Sudden cross winds will
  create hazardous travel for light weight and high profile
  vehicles, especially on west to east oriented 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.

&&

$$

HAMMER

1 follow-up statement

567 
WWUS75 KCYS 082152
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
252 PM MST Fri Dec 8 2017

WYZ116>119-082300-
/O.CAN.KCYS.HW.W.0041.000000T0000Z-171209T0000Z/
South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
Including the cities of Buford, Pumpkin Vine, Vedauwoo, Whitaker,
Federal, Horse Creek, Cheyenne, and Pine Bluffs
252 PM MST Fri Dec 8 2017

...HIGH WIND WARNING IS CANCELLED...

The National Weather Service in Cheyenne has cancelled the High
Wind Warning. 

Winds will continue to slowly diminish. However, sustained winds
of 35 to 40 MPH with gusts around 50 MPH will remain possible
through sunset. 

$$

HAMMER

Nearby

High Wind Warnings in Wyoming, 2017 Every high wind warning in 2017

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.