High Wind in Wyoming, March 1, 2022

Area Forecast Discussion
National Weather Service Riverton WY
146 AM MST Tue Mar 1 2022

.SHORT TERM...Today through Wednesday

An upper level ridge will be in place over the Northern/Canadian
Rockies today and Wednesday, putting the Cowboy State on the eastern
side of the ridge axis. Precipitable water values will continue to
be 150 to 200 percent of normal over the state, as a result of an
atmospheric river event that is impacting the PACNW. Isolated snow
showers, with little to no accumulation, will occur as a result of
this moisture and upslope flow. These showers will be confined over
Yellowstone (Happy 150th anniversary) and the surrounding areas
today and tonight. Strong winds continue to impact the Absarokas and
Cody Foothills this morning. A weather spotter near Wapiti
reported a wind gusts of 89 mph after sunrise Monday morning and a
91 mph gust before 9 PM. These winds will continue to gradually
decrease toward sunrise, but remain gusty through the day with
gusts of 50 to 55 mph. Southwest winds, with gusts of 30 to 40
mph, will continue over the Wind Corridor today and Wednesday as
well. Temperatures will continue to rise today and Wednesday, with
readings well above normal in the 50s and 60s across the south
and east of the Divide. The western valleys and Upper Green River
Basin will be in the 40s, but still above normal at the start of
the meteorological spring.

.LONG TERM...Wednesday night through Monday

Thursday will be the last day of calm before the storm. Highs are
expected to be in the upper 40s to low 50s west of the Divide and
60+ east of the Divide. This courtesy of subsidence and clear skies
thanks to a mid-level ridge. Southwest flow at the surface will
result in gusts of 25 to 35 knots along the Wind Corridor from Rock
Springs to Casper with the strongest winds in Natrona County.

Friday is where the pattern gets interesting. A series of mid-level
closed lows will swing through the area from Friday afternoon
through Sunday afternoon. Good moisture will be present across the
area as these systems pass, so precip is likely for all as lift will
be plentiful. With 700mb temps between -2C to -6C precip type is
likely to start as a rain/snow mix west of the Divide and mostly
rain east of the Divide. This rapidly transitions to all snow Friday
night as a cold front surges in from the north and temps drop. The
two systems will practically be on each other's heels as they take
very similar tracks, which would result in persistent snow and
travel impacts. Still too early to have an idea on potential
amounts, but if all holds true it could be a decent snowfall event
for most. Another shortwave in the broader flow drops down from
Canada on Monday. Moisture values would likely be substantially
lower with this system and it appears much weaker than the previous
two at this point. It should keep snow chances around, but more of a
scattered type of event if anything. Temperature wise it will be
well below average with highs in the 20s to 30s and lows in the
single digits to teens.

&&

.AVIATION...For the 06Z TAFS through 06Z Wednesday
Issued at 1020 PM MST Mon Feb 28 2022

VFR conditions are expected at all terminals through the TAF
period.

Strong southwest to west winds will occur in typical areas such as
from South Pass to Casper, as well as the Absaroka Mountains and
Cody Foothills through about 00Z Wednesday. Both KCOD and KCPR
will be impacted by the strong winds and low-level wind shear if
the winds lighten up a bit. Also windy northwest flow will be
observed at Dubois through at least 00Z Wednesday.

Isolated, brief snow showers are expected over the northwest with
only a remote chance of them directly impacting KJAC. However
surrounding mountains will have a better chance, so will have VCSH
at KJAC.

Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for
the latest information on icing and turbulence forecasts.

&&

.FIRE WEATHER...

West winds, with gusts of 50 to 55 mph, will continue to impact
zones 276/286 today and Wednesday, while southwest winds with
gusts up to 40 mph continue over zones 280/289. Isolated snow
showers will remain possible over Yellowstone and the surrounding
mountains. Temperatures will rise well above normal today and
Wednesday, with 60s expected east of the Divide. The next winter
storm is poised to impact the area starting Friday night and
continue through the weekend.

&&

.RIW WATCHES/WARNINGS/ADVISORIES...
High Wind Warning until 8 AM MST this morning for WYZ002-003.

&&

SHORT TERM...LaVoie
LONG TERM...Rowe
AVIATION...Murrell
FIRE WEATHER...LaVoie

Hazardous Weather Outlook
National Weather Service Riverton WY
106 AM MST Tue Mar 1 2022

WYZ001>020-022>030-020815-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
106 AM MST Tue Mar 1 2022

...High Wind Warning in effect for the Cody Foothills and Absaroka
Mountains this Morning...

This Hazardous Weather Outlook is for Western and Central
Wyoming.

.DAY ONE...Today and Tonight.

Strong west winds are expected over the Absarokas and in the Clark
area early this morning. Sudden gusts 50 to 55 mph are possible,
with isolated gusts up to 60 mph near Clark.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Wednesday and Thursday...Ice jams with minor flooding are
possible, especially for areas east of the Divide.

Friday...Snow moves into the west. Temperatures drop as a cold
front moves through the area.

Saturday and Sunday...Snow is likely across the area. Travel
impacts are possible. Temperatures will be below average.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

Special Weather Statement
National Weather Service Riverton WY
1048 PM MST Mon Feb 28 2022

WYZ002-003-010700-
Absaroka Mountains-Cody Foothills-
Including the cities of Clark, Cody, and Meeteetse
1048 PM MST Mon Feb 28 2022

A high wind warning is now in effect for the Cody Foothills and
the Absaroka Mountains. Please see the high wind warning statement
for more details.

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RIVERTON WY
1054 PM MST MON FEB 28 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0851 PM     NON-TSTM WND DMG 1 NNE WAPITI            44.49N 109.42W
02/28/2022                   PARK               WY   PUBLIC

            MINOR DAMAGE TO A ROOF. A MEASURED GUST OF
            91 MPH AT A RESIDENCE NEAR WAPITI.

&&

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