Alert archive / Wyoming / High Wind Watches in 2015

High Wind Watch 17, NWS Cheyenne, WY

November 18, 2015Albany County, Carbon County, Laramie County, Wyoming

NWS Cheyenne, WY issued this high wind watch at Nov 18, 2015, 3:44 PM MST for Albany County, Carbon County, Laramie County, Wyoming. It took effect at Nov 19, 2015, 5:00 PM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Nov 18, 2015, 3:44 PM MST (22:44 UTC)
In effect from
Nov 19, 2015, 5:00 PM MST
Expired
Nov 19, 2015, 2:41 AM MST
In force
Issued by
NWS Cheyenne, WY

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

The radar

The Cheyenne radar (KCYS), 93 km from the middle of the area, began a volume at 22:50 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

Grand Junction, CO (KGJT), launched 12:00Z, 10.7 hours before the alert went out and 354 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, Grand Junction, CO at 12:00Z on 2015-11-18Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Grand Junction, CO at 12:00Z on 2015-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
1299 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
193 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this high wind watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cheyenne, WY wrote its last area forecast discussion before this high wind watch went out at Nov 18, 3:00 PM MST, 44 minutes earlier.

Area forecast discussion, Nov 18, 3:00 PM MST, 44 minutes before
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Hazardous weather outlook, Nov 18, 5:00 AM MST, 10 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHEYENNE WY
500 AM MST WED NOV 18 2015

NEZ002-003-019>021-054-055-095-096-WYZ101>119-191200-
DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL-CHEYENNE-
NORTH SIOUX-SOUTH SIOUX-CONVERSE COUNTY LOWER ELEVATIONS-
NIOBRARA COUNTY-NORTH LARAMIE RANGE-
FERRIS/SEMINOE/SHIRLEY MOUNTAINS-SHIRLEY BASIN-
CENTRAL LARAMIE RANGE AND SOUTHWEST PLATTE COUNTY-
EAST PLATTE COUNTY-GOSHEN COUNTY-CENTRAL CARBON COUNTY-
NORTH SNOWY RANGE FOOTHILLS-SOUTHWEST CARBON COUNTY-
SIERRA MADRE RANGE-UPPER NORTH PLATTE RIVER BASIN-SNOWY RANGE-
LARAMIE VALLEY-SOUTH LARAMIE RANGE-SOUTH LARAMIE RANGE FOOTHILLS-
CENTRAL LARAMIE COUNTY-EAST LARAMIE COUNTY-
500 AM MST WED NOV 18 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN
NEBRASKA...EAST CENTRAL WYOMING...SOUTH CENTRAL WYOMING AND
SOUTHEAST WYOMING.

.DAY ONE...TODAY AND TONIGHT

WIDESPREAD HIGH WINDS WILL CONTINUE THROUGH LATE THIS AFTERNOON
OVER MUCH OF THE REGION. WIND PRONE AREAS WILL EXPERIENCE WIND
GUSTS OF 70 TO 80 MPH. ELSEWHERE...WIND GUSTS OF 60 TO 65 MPH
WILL BE COMMON. TRAVEL WILL BE VERY HAZARDOUS...ESPECIALLY FOR
LIGHTWEIGHT AND HIGH PROFILE VEHICLES ALONG NORTH TO SOUTH
ORIENTED ROADWAYS. REFER TO THE LATEST HIGH WIND WARNINGS FOR
DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

STRONG WESTERLY WINDS WILL CONTINUE THURSDAY AND THURSDAY NIGHT
FOR MUCH OF SOUTHEAST WYOMING. THE WIND PRONE AREAS COULD GUST
AS HIGH AS 65 MPH.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE REQUIRED TODAY AND TONIGHT...
HOWEVER REPORTS OF HIGH WINDS WILL BE APPRECIATED.

In the hours before

Local storm report, Nov 18, 11:36 AM MST, 4 hours 8 minutes before
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Special weather statement, Nov 18, 12:55 PM MST, 2 hours 49 minutes before
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Local storm report, Nov 18, 1:04 PM MST, 2 hours 40 minutes before
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Local storm report, Nov 18, 1:09 PM MST, 2 hours 35 minutes before
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Special weather statement, Nov 18, 2:53 PM MST, 51 minutes before
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Local storm report, Nov 18, 2:56 PM MST, 48 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Nov 18, 12:55 PM MSTSpecial Weather StatementCYSLaramie35 min

Nearby

High Wind Watches in Wyoming, 2015Every high wind watch 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.