A strong low pressure system tracked into the Pacific Northwest on the 2nd of May with a trailing cold front that moved into Wyoming the morning of the 4th.  Ahead of the front, a strong pressure gradient developed giving us high wind warning criteria across southern Wyoming the morning of the 3rd with widespread warning criteria developing the morning of the 4th and persisting through the day.  A brief period of calm winds was observed immediately behind the cold front in our northern counties, associated with a bubble high.  But as the high moved east of the CWA, very strong west to northwest winds returned through sunset.  Forecast soundings from across the region indicated the potential for a deep and well mixed boundary layer to mix extremely high wind gusts from roughly 600mb to the surface in the afternoon of the 4th.  Observed soundings from nearby stations the morning of, and shortly after the event showed this deep boundary layer indeed did occur.

High Wind in NIOBRARA COUNTY, WYOMING
From 04-MAY-10 01:00:00 to 04-MAY-10 01:01:00 (MST-7)
Magnitude: 53.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Utility Company

Power pole snapped in the town of Lusk.  A power line was blown down near Gropp Road west of the Soderberg's residence.  This caused a grass fire.  Another power line was down in Lusk causing an outage from North Maple Street south.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 03-MAY-10 11:45:00 to 03-MAY-10 11:46:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux reported 60 MPH gusts with sustained winds of 42 MPH.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 08:51:00 to 03-MAY-10 08:52:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington AWOS reported wind gusts of 60 to 63 MPH.  Sustained wind speeds of 42 to 46 MPH.

High Wind in EAST LARAMIE COUNTY, WYOMING
From 04-MAY-10 13:59:00 to 04-MAY-10 14:00:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Burns 9 miles southeast.

High Wind in EAST PLATTE COUNTY, WYOMING
From 04-MAY-10 14:10:00 to 04-MAY-10 14:11:00 (MST-7)
Magnitude: 70.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Vehicle blown off the road on Highway 26 mile marker 10.

High Wind in GOSHEN COUNTY, WYOMING
From 04-MAY-10 14:50:00 to 04-MAY-10 14:51:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Torrington.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 04-MAY-10 11:30:00 to 04-MAY-10 11:31:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rawlins.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 11:35:00 to 04-MAY-10 11:36:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux.

High Wind in FERRIS/SEMINOE/SHIRLEY MOUNTAINS, WYOMING
From 04-MAY-10 11:50:00 to 04-MAY-10 11:51:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Muddy Gap.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 09:06:00 to 03-MAY-10 09:07:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington AWOS reported a gust to 59MPH with sustained winds of 47 MPH.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 07:45:00 to 04-MAY-10 07:46:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sustained wind 47 to 61 MPH.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 04-MAY-10 07:56:00 to 04-MAY-10 07:57:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sustained 47 mph.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 08:22:00 to 04-MAY-10 08:23:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Cheynne asos.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 13:32:00 to 04-MAY-10 13:33:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Laramie 13 southeast.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 04-MAY-10 13:34:00 to 04-MAY-10 13:35:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rawlins.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 12:06:00 to 03-MAY-10 13:07:00 (MST-7)
Magnitude: 43.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington site reported sustained winds of 44 to 50 MPH.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 12:41:00 to 03-MAY-10 12:42:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington reported wind gust of 71 MPH.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 08:21:00 to 03-MAY-10 09:22:00 (MST-7)
Magnitude: 40.00 MS
Reported by: Department of Highways

Arlington AWOS reported sustained winds 40 MPH for several hours.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 08:36:00 to 03-MAY-10 08:37:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington AWOS reported wind gust of 60 MPH.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 04-MAY-10 13:44:00 to 04-MAY-10 13:45:00 (MST-7)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Garrett 10 south southeast.

High Wind in GOSHEN COUNTY, WYOMING
From 04-MAY-10 10:53:00 to 04-MAY-10 10:54:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Torrington.

High Wind in LARAMIE VALLEY, WYOMING
From 04-MAY-10 10:53:00 to 04-MAY-10 10:54:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Laramie.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 10:55:00 to 04-MAY-10 10:56:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Whitaker.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 06:39:00 to 04-MAY-10 06:40:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Cheyenne ASOS reported sustained 41 MPH with gusts to 58 MPH.

High Wind in LARAMIE VALLEY, WYOMING
From 04-MAY-10 07:40:00 to 04-MAY-10 07:41:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Laramie ASOS reported 64 mph gust.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 04-MAY-10 07:44:00 to 04-MAY-10 07:45:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Dodge Creek Mesonet.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 01:15:00 to 04-MAY-10 01:16:00 (MST-7)
Magnitude: 63.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Emkay Union Pacific site. Reported sustained winds of 40 to 56 MPH with gusts to 73 MPH.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 02:10:00 to 04-MAY-10 03:11:00 (MST-7)
Magnitude: 36.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Whitaker Mesonet site.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 04-MAY-10 13:15:00 to 04-MAY-10 13:16:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Cheyenne 14W.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 04-MAY-10 13:26:00 to 04-MAY-10 13:27:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Elk Mountain 12 east southeast.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 13:27:00 to 04-MAY-10 13:28:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Cheyenne.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 02:10:00 to 04-MAY-10 02:11:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux reported sustained 40 to 46 MPH with gusts to 64 MPH.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 12:02:00 to 04-MAY-10 13:03:00 (MST-7)
Magnitude: 38.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Vedauwoo.

High Wind in LARAMIE VALLEY, WYOMING
From 04-MAY-10 12:23:00 to 04-MAY-10 12:24:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Laramie.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 12:47:00 to 04-MAY-10 12:48:00 (MST-7)
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Cheyenne 10NE coop observer.

High Wind in LARAMIE VALLEY, WYOMING
From 03-MAY-10 13:00:00 to 03-MAY-10 13:01:00 (MST-7)
Magnitude: 51.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Buford reported wind gust to 59 MPH.

High Wind in LARAMIE VALLEY, WYOMING
From 03-MAY-10 14:00:00 to 03-MAY-10 14:01:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Buford reported wind gust of 61 MPH.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 03-MAY-10 14:44:00 to 03-MAY-10 14:45:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet 11 SSE Garrett reported 58 MPH wind gusts.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 03-MAY-10 09:30:00 to 03-MAY-10 10:30:00 (MST-7)
Magnitude: 42.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet site 4 ESE of Interstate 80 Exit 345.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 03-MAY-10 10:15:00 to 03-MAY-10 10:16:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux measured 59 MPH gust with sustained winds of 46 MPH.

High Wind in EAST LARAMIE COUNTY, WYOMING
From 04-MAY-10 11:00:00 to 04-MAY-10 11:01:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Gun Barrel.

High Wind in CONVERSE COUNTY LOWER ELEVATIONS, WYOMING
From 04-MAY-10 11:29:00 to 04-MAY-10 11:30:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Douglas.

High Wind in EAST PLATTE COUNTY, WYOMING
From 04-MAY-10 11:30:00 to 04-MAY-10 11:31:00 (MST-7)
Magnitude: 61.00 EG
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Automobile blown off Interste 25 at mile marker 77.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 04-MAY-10 04:26:00 to 04-MAY-10 04:27:00 (MST-7)
Magnitude: 63.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Spotter located 12 miles SSE of Horse Creek reported several 72 MPH wind gusts.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 04-MAY-10 04:52:00 to 04-MAY-10 04:53:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Esterbrook site.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 05:20:00 to 04-MAY-10 05:21:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux Site.

High Wind in SOUTH LARAMIE RANGE FOOTHILLS, WYOMING
From 04-MAY-10 08:36:00 to 04-MAY-10 08:37:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sustained winds at 48 MPH.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 04-MAY-10 08:40:00 to 04-MAY-10 08:41:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

From Como Union Pacific RR observing site.

High Wind in SNOWY RANGE, WYOMING
From 04-MAY-10 08:55:00 to 04-MAY-10 08:56:00 (MST-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

North French Creek mesonet.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 03-MAY-10 11:47:00 to 03-MAY-10 12:47:00 (MST-7)
Magnitude: 42.00 MS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Vedauwoo site reported sustained winds of 48 MPH.

High Wind in SHIRLEY BASIN, WYOMING
From 04-MAY-10 09:40:00 to 04-MAY-10 09:41:00 (MST-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Medicine Bow.

High Wind in EAST PLATTE COUNTY, WYOMING
From 04-MAY-10 09:58:00 to 04-MAY-10 09:59:00 (MST-7)
Magnitude: 61.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Tractor trailor blown over on Interstate 25 at mile marker 104.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 10:50:00 to 04-MAY-10 10:51:00 (MST-7)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux site.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 03-MAY-10 16:44:00 to 03-MAY-10 16:45:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Mesonet 11 SSE Garrett reported wind gust at 65 MPH.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 04-MAY-10 01:52:00 to 04-MAY-10 01:53:00 (MST-7)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Winds 39 to 43 sustained with gusts to 69 MPH.

High Wind in NORTH LARAMIE RANGE, WYOMING
From 04-MAY-10 00:52:00 to 04-MAY-10 00:53:00 (MST-7)
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Surface winds of 43 MPH with gusts to 69 MPH.

High Wind in CENTRAL LARAMIE COUNTY, WYOMING
From 04-MAY-10 12:52:00 to 04-MAY-10 12:53:00 (MST-7)
Magnitude: 71.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Coop observer.

High Wind in SOUTH LARAMIE RANGE, WYOMING
From 04-MAY-10 13:00:00 to 04-MAY-10 13:01:00 (MST-7)
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Buford.

High Wind in LARAMIE VALLEY, WYOMING
From 04-MAY-10 13:05:00 to 04-MAY-10 13:06:00 (MST-7)
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Laramie 13N.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 03-MAY-10 11:15:00 to 03-MAY-10 11:16:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux reported wind gusts of 52 to 60 MPH with sustained winds of 33 to 45 MPH.

High Wind in NORTH SNOWY RANGE FOOTHILLS, WYOMING
From 03-MAY-10 11:26:00 to 03-MAY-10 11:27:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Arlington reported wind gusts of 52 to 60 MPH with sustained winds of 33 to 45 MPH.

High Wind in EAST LARAMIE COUNTY, WYOMING
From 04-MAY-10 08:55:00 to 04-MAY-10 08:56:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Sustained at 42 MPH.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 04-MAY-10 09:13:00 to 04-MAY-10 09:14:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rawlins.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 09:15:00 to 04-MAY-10 09:16:00 (MST-7)
Magnitude: 61.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux report.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 04-MAY-10 15:05:00 to 04-MAY-10 15:07:00 (MST-7)
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Wheatland 9 miles south.

High Wind in CENTRAL CARBON COUNTY, WYOMING
From 04-MAY-10 16:24:00 to 04-MAY-10 16:25:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Rawlins.

High Wind in CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY, WYOMING
From 03-MAY-10 11:30:00 to 03-MAY-10 11:31:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Bordeaux reported wind gusts to 60 MPH with sustained winds of 37 to 43 MPH.