Alert archive / Wyoming / High Wind Watches in 2020

High Wind Watch 15, NWS Cheyenne, WY

February 25, 2020Albany County, Laramie County, Platte County, Wyoming

NWS Cheyenne, WY issued this high wind watch at Feb 25, 2020, 3:11 PM MST for Albany County, Laramie County, Platte County, Wyoming. It took effect at Feb 26, 2020, 2:00 AM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Feb 25, 2020, 3:11 PM MST (22:11 UTC)
In effect from
Feb 26, 2020, 2:00 AM MST
Expired
Feb 26, 2020, 1:21 AM MST
In force
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 22:16 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

Denver, CO (KDNR), launched 12:00Z, 10.2 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 2020-02-25Temperature 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, Denver, CO at 12:00Z on 2020-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -133 square meters per square second.193958Sfc1 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
1164 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-133 m²/s²
0-3 km storm-relative helicity
-131 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 Feb 25, 3:06 PM MST, 5 minutes earlier.

Area forecast discussion, Feb 25, 3:06 PM MST, 5 minutes before
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Hazardous weather outlook, Feb 25, 6:04 AM MST, 9 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Cheyenne WY
604 AM MST Tue Feb 25 2020

WYZ112-114-261315-
Sierra Madre Range-Snowy Range-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of south central
Wyoming.

.DAY ONE...TODAY AND TONIGHT

Snow and blowing snow. Expect impacts to travel and outdoor
recreation with reduced visibility and slick roads. A Winter
Weather Advisory remains in effect.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Snowfall and gusty winds likely on Wednesday. Then conditions
quiet until the weekend when widespread snowfall chances return.

.Spotter information statement...

Any snowfall reports would be appreciated. Please send to NWS
Cheyenne on Facebook, Twitter, or call 307-772-2468.

NEZ002-020-054-055-095-WYZ101-102-107-108-118-119-261315-
Dawes-Banner-Kimball-Cheyenne-North Sioux-
Converse County Lower Elevations-Niobrara County-
East Platte County-Goshen County-Central Laramie County-
East Laramie County-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of western
Nebraska...east central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Snow, blowing snow, and snow squalls likely today. Expect
visibility to be significantly reduced especially in areas of
heavier snow and blowing snow and slick roads. Please use caution
when traveling. A Winter Weather Advisory remains in effect.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Quiet conditions for the remainder of the week until the weekend
when snow chances return.

.Spotter information statement...

Any snowfall reports would be appreciated. Please send to NWS
Cheyenne on Facebook, Twitter, or call 307-772-2468.

WYZ103-261315-
North Laramie Range-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of southeast
Wyoming.

.DAY ONE...TODAY AND TONIGHT

Heavy snow and blowing snow. Additional snowfall of 8 to 10 inches
possible today. A Winter Storm Warning remains in effect.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Additional chances for snow this weekend.

.Spotter information statement...

Any snowfall reports would be appreciated. Please send to NWS
Cheyenne on Facebook, Twitter, or call 307-772-2468.

WYZ104-105-109>111-113-261315-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Carbon County-North Snowy Range Foothills-
Southwest Carbon County-Upper North Platte River Basin-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of south central
Wyoming.

.DAY ONE...TODAY AND TONIGHT

Blowing snow. Little to no new snow expected. Roads will be slick
from recent snowfall and snow being blown onto the road. Expect
impacts to travel.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Conditions improve Wednesday and then quiet weather takes hold for
the rest of the week until the weekend when chances for snow
return.

.Spotter information statement...

Spotter activation will not be needed.

NEZ003-019-021-096-WYZ106-115-261315-
Box Butte-Scotts Bluff-Morrill-South Sioux-
Central Laramie Range and Southwest Platte County-Laramie Valley-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of western
Nebraska and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Isolated snow showers possible. Expect minor impacts to travel
with slick roads.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Quiet weather to end the week then snowfall chances return this
weekend.

.Spotter information statement...

Spotter activation will not be needed.

WYZ116-117-261315-
South Laramie Range-South Laramie Range Foothills-
604 AM MST Tue Feb 25 2020

This hazardous weather outlook is for portions of southeast
Wyoming.

.DAY ONE...TODAY AND TONIGHT

Dangerous travel conditions with high winds, blowing snow, and
snowfall. Expect significant reductions to visibility and slick
roads. A High Wind Warning and Winter Weather Advisory are in
effect.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

Quiet conditions for the remainder of the week until the weekend
when snow chances return.

.Spotter information statement...

Any snowfall reports would be appreciated. Please send to NWS
Cheyenne on Facebook, Twitter, or call 307-772-2468.

In the hours before

Local storm report, Feb 25, 10:59 AM MST, 4 hours 12 minutes before
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Local storm report, Feb 25, 11:29 AM MST, 3 hours 42 minutes before
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Local storm report, Feb 25, 12:44 PM MST, 2 hours 27 minutes before
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Local storm report, Feb 25, 2:38 PM MST, 33 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 5:58 PM MSTWinter Storm WarningCYSAlbany, Converse, Platte20 hr
Feb 25, 5:15 AM MSTHigh Wind WarningCYSAlbany, Laramie4 hr
Feb 25, 9:26 AM MSTBlizzard WarningCYSAlbany, Laramie4 hr
Feb 25, 9:26 AM MSTWinter Weather AdvisoryCYSAlbany, Laramie11 hr

Nearby

High Wind Watches in Wyoming, 2020Every high wind watch in 2020

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.