High Wind Warning 63, NWS Cheyenne, WY

086 
WWUS75 KCYS 211006
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
306 AM MST Wed Dec 21 2022

WYZ110-220000-
/O.CON.KCYS.HW.W.0062.000000T0000Z-221222T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
306 AM MST Wed Dec 21 2022

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

* WHAT...West to southwest winds 35 to 45 MPH with gusts up to 70
  MPH expected. A few gusts may approach 80 MPH due to snow
  squalls. 

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to light weight and high profile vehicles, including
  campers and tractor trailers.

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.

&&

$$

WYZ106-107-117-220000-
/O.CON.KCYS.HW.W.0062.000000T0000Z-221222T0000Z/
Central Laramie Range and Southwest Platte County-
East Platte County-South Laramie Range Foothills-
Including the cities of Bordeaux, Wheatland, Guernsey, Whitaker, 
Federal, and Horse Creek
306 AM MST Wed Dec 21 2022

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

* WHAT...West winds 35 to 45 MPH with gusts up to 70 mph expected.
  A few gusts may approach 80 MPH due to snow squalls. 

* WHERE...Central and Southern Laramie Range, adjacent foothills,
  and lower elevations of Platte County. This includes Interstate
  25 between Cheyenne and Glendo. 

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to light weight and high profile vehicles, including
  campers and tractor trailers.

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.

&&

$$

WYZ116-220000-
/O.CON.KCYS.HW.W.0063.000000T0000Z-221222T0000Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
306 AM MST Wed Dec 21 2022

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

* WHAT...West winds 35 to 45 MPH with gusts up to 70 MPH expected.
  A few gusts may approach 80 MPH due to snow squalls. 

* WHERE...South Laramie Range including Buford and Vedauwoo areas
  along Interstate 80 between Laramie and Cheyenne. 

* WHEN...Until PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be
  hazardous to light weight and high profile vehicles, including
  campers and tractor trailers.

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.

&&

$$

WYZ101-104-105-109-111-113-115-118-220000-
/O.CON.KCYS.HW.W.0062.221221T1200Z-221222T0000Z/
Converse County Lower Elevations-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Carbon County-Southwest Carbon County-
Upper North Platte River Basin-Laramie Valley-
Central Laramie County-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Baggs, 
Saratoga, Encampment, Laramie, Bosler, and Cheyenne
306 AM MST Wed Dec 21 2022

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

* WHAT...West winds 35 to 45 MPH with gusts up to 70 MPH expected.
  A few gusts may approach 80 MPH due to snow squalls. 

* WHERE...Much of southeast Wyoming along and west of Interstate 
  25. This includes Douglas, Cheyenne, Laramie, Saratoga, Muddy 
  Gap, and Shirley Basin.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight and high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

CLH

721 
WWUS75 KCYS 212026
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
126 PM MST Wed Dec 21 2022

WYZ110-220000-
/O.CON.KCYS.HW.W.0062.000000T0000Z-221222T0000Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
126 PM MST Wed Dec 21 2022

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

* WHAT...West winds 40 to 50 MPH with gusts up to 80 MPH 
  expected.

* WHERE...North Snowy Range Foothills including Arlington and 
  Elk Mountain along Interstate 80 between Laramie and Rawlins.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight and high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ106-107-117-220000-
/O.CON.KCYS.HW.W.0062.000000T0000Z-221222T0000Z/
Central Laramie Range and Southwest Platte County-
East Platte County-South Laramie Range Foothills-
Including the cities of Bordeaux, Wheatland, Guernsey, Whitaker, 
Federal, and Horse Creek
126 PM MST Wed Dec 21 2022

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

* WHAT...West to northwest winds 35 to 45 MPH with gusts up to 60
  MPH expected.

* WHERE...Central and Southern Laramie Range, adjacent 
  foothills, and lower elevations of Platte County. This 
  includes Interstate 25 between Cheyenne and Glendo.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight and high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ116-220000-
/O.CON.KCYS.HW.W.0063.000000T0000Z-221222T0000Z/
South Laramie Range-
Including the cities of Buford, Pumpkin Vine, and Vedauwoo
126 PM MST Wed Dec 21 2022

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

* WHAT...West winds 35 to 45 MPH with gusts up to 70 MPH expected.

* WHERE...South Laramie Range including Buford and Vedauwoo 
  areas along Interstate 80 between Laramie and Cheyenne.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight and high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

WYZ101-104-105-109-111-113-115-118-220000-
/O.CON.KCYS.HW.W.0062.000000T0000Z-221222T0000Z/
Converse County Lower Elevations-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Carbon County-Southwest Carbon County-
Upper North Platte River Basin-Laramie Valley-
Central Laramie County-
Including the cities of Douglas, Glenrock, Bill, Deer Creek, 
Seminoe Dam, Medicine Bow, Shirley Basin, Rawlins, Baggs, 
Saratoga, Encampment, Laramie, Bosler, and Cheyenne
126 PM MST Wed Dec 21 2022

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

* WHAT...West to northwest winds 35 to 45 MPH with gusts up to 70
  MPH expected.

* WHERE...Much of southeast Wyoming along and west of Interstate 
  25. This includes Douglas, Cheyenne, Laramie, Saratoga, Muddy 
  Gap, and Shirley Basin.

* WHEN...Until 5 PM MST Wednesday.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight and high profile vehicles, including 
  campers and tractor trailers.

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.

&&

$$

Area Forecast Discussion
National Weather Service Cheyenne WY
1048 AM MST Tue Dec 20 2022

.SHORT TERM...(Today - Thursday)
Issued at 426 AM MST Tue Dec 20 2022

...EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING COLD WAVE
SET TO IMPACT THE REGION...FARM AND RANCH INTERESTS SHOULD MAKE
FINAL PREPARATIONS NOW...

...HIGH WINDS AND PERIODS OF SNOW AND BLOWING SNOW ALSO EXPECTED
WITH THE ARCTIC FRONT...

An active 24 to 48 hours ahead for southeast Wyoming & the western
Nebraska Panhandle w/ multiple significant, high-impact hazards to
impact the CWA. Strong winds impacting the southeast Wyoming wind-
corridors early this morning will become more widespread tonight &
Wednesday. Mountain snow is likely to develop across the Snowy and
Sierra Madre ranges later this afternoon, likely becoming heavy by
mid-day Wednesday. Widespread light to moderate snowfall is likely
along the cold front on Wednesday morning and afternoon, with some
locally intense banding & snow squalls likely. Extremely dangerous
and potentially life-threatening wind chills are likely to rapidly
develop behind the cold front with serious impacts possible to the
livestock and agricultural communities, as well as more vulnerable
human populations, especially Wednesday night through early Friday
morning.

Wind gusts of 65 to 70 MPH have been common near Arlington and Elk
Mountain early this morning. This is likely the result of enhanced
H85 CAG-CPR gradients near 70 meters between lee troughing along &
east of the Laramie Range & the surface high over western Colorado
currently in place. These gradients may diminish somewhat over the
next few hours, but steep low-level lapse rates combined w/ around
45 knots of 700-800 millibar flow should be sufficient to keep the
gusts elevated above 45-50 MPH through the day. After 00z, CAG-CPR
gradients will rapidly increase yet again as the lee trough should
intensify in response to difluent flow in advance of a significant
mid-level short wave diving into the Intermountain West. Local in-
house probabilistic guidance suggests a strong signal for gusts 60
MPH or stronger after 03z this evening, leading to the decision to
extend the current warning through 00z Thursday. Would expect this
to be cancelled a few hours early once the front passes around mid
day Wednesday. A similar scenario can be expected for the southern
Laramie Range including the I-80 Summit, with H75 flow near 60 kts
requiring High Wind Warning issuance through 11 AM MST today. Will
see a decent decrease in speeds this afternoon, but a west to east
oriented MSLP gradient on the order of 4-6 millibars will begin to
take shape between Laramie & Cheyenne after 03z this evening along
with a sharp omega couplet / mountain wave signal and 55 to 65 kts
of H7-H8 flow. This should be more than sufficient for gusts to 65
to 75 MPH overnight through mid-day Wednesday prior to the passage
of the arctic front. These winds could even spill east into Platte
County. A High Wind Watch has been issued for the Southern Laramie
Range and adjacent Foothills, as well as much of Platte County, to
include Wheatland, Glendo, and the Coleman WYDOT sensor.

Extreme MSLP gradients are expected with the passage of the arctic
front on Wednesday. Significant low-level mixing will likely occur
ahead of the boundary, with models in good agreement with 50 to 55
knots of 0.5 km flow in place across much of southeast Wyoming for
areas mainly along west of I-25. High-res model guidance including
the HRRR suggests widespread 55 to 65 MPH gusts developing between
15z and 21z prior to fropa w/ gusts decreasing to a slightly more-
manageable 30 to 40 MPH in the late afternoon & evening behind the
cold front. Have opted for a High Wind Watch from 15z Wednesday to
00z Thursday for much of southeast Wyoming given the fairly strong
support from high-res model guidance, even though this event could
be just a few hours in duration at most. All warning-criteria wind
gusts should cease immediately post-fropa, but it will remain very
windy nonetheless. In addition to the threat for high winds as the
front approaches, banded snow is likely near the frontal zone with
very strong frontogenesis at H7. This locally intense banding with
possible snow squalls could drop a quick several inches of snow w/
significant travel impacts due to blowing snow as well. This seems
like a scenario where Snow Squall Warnings may be favored over the
need for Winter Weather Advisories as the threat for precipitation
should be fairly short lived as well, so did not go w/ any winter-
precipitation hazards at this time.

The most dramatic, and likely most serious part of this storm will
be the likelihood of extremely dangerous and life threatening wind
chill values potentially exceeding 50-60 degrees below zero. Near-
record breaking high pressure is still expected to slide southward
across western Montana on Thursday w/ the GFS still suggesting the
1066 mb central pressure hear Helena which would exceed the record
for the contiguous US set in 1983. As such, this will certainly be
one of the coldest air masses to impact the area in recent years &
perhaps decades. NAEFS/EPS guidance continues to indicate both 700
and 850 mb temperatures outside of climatology with several of the
deterministic models (GFS/GEM/ECM) all showing H7 temperatures -30
deg C or colder over most of the CWA by 12z Thursday. As the cold-
front blasts south on Wednesday afternoon, high-res models suggest
that temperatures may fall 30 to 40 degrees in an hour or less. If
fropa is accompanied by a snow squall, this may be a serious flash
freeze event as well. Unlike the typical extreme cold events which
are driven by lighter winds and radiational cooling, this one will
be driven by strong winds w/ model soundings showing a deep, well-
mixed boundary layer with average flow of 25 to 35 kts expected to
reside within the lowest 1k feet AGL. That said, we could actually
see temperatures of -25 to -35 deg F with sustained winds over 25-
30 MPH! This is extremely rare and is arguably more dangerous than
your typical wind chill event where winds are less than 10 MPH. If
there are any uncertainties at all, it is exactly how cold we will
get as it is usually tough to see extreme cold when winds are this
strong. Even so, NBM v4.1 has remained very consistent with 80-100
percent probabilities of -20 F or colder actual air temperatures &
50th percentiles MinT of -24 to -34 deg F Thursday night for most,
if not all of the CWA. Official forecast was blend of 25-25-50 NBM
10th, 25th, and 50th percentiles, respectively. Prefer to hedge on
the lower side for highly anomalous air masses.

These MinT values, combined with the expected wind speeds yield WC
values under 50 degrees below zero for most zones, perhaps even as
cold as 70 degrees below zero near Lusk. Frostbite and hypothermia
can develop in mere minutes in these conditions, and unfortunately
death is a very real possibility in this scenario, especially with
more vulnerable human populations. Farmers & ranchers are strongly
advised to make final preparations to protect livestock. We cannot
stress enough the seriousness of this situation! While the coldest
wind chills will likely occur Wed night and Thu AM, highs on Thurs
will remain below zero for many with winds staying elevated. There
will not be much improvement whatsoever through Friday. Wind Chill
Watches have been upgraded to Wind Chill Warnings area-wide.

In the mountains, due to the expected significant orographics with
a 180+ knot H25 jet (90-100 knot H5 jet), high-elevation snow fall
accumulations of 8 to 15 inches will be possible in both the Snowy
and Sierra Madre ranges. This combined w/ strong winds will create
near blizzard conditions in the high country, and given the degree
of wind chills, could be very serious should anyone become lost in
these conditions. A Winter Storm Warning has been issued for these
zones through 12z Thursday, followed by a Wind Chill Warning.

.LONG TERM...(Thursday Night - Monday)
Issued at 426 AM MST Tue Dec 20 2022

The main story for the beginning tier of the extended forecast
continues to be the unprecedented cold temperatures that will stick
around on Thursday night into early Friday. Model guidance trends
continue to show dangerous cold temperatures and wind chills through
Friday morning. It wouldn't be Wyoming if we didn't also include the
potential for our typical strong high winds to ramp up again during
the extended period for the wind prone corridors as well. However,
slightly above average temperatures are favored by the end of our
extended forecast into the 30s and 40s.

A dome of 1055mb surface high pressure will be firmly entrenched
across central and northern WY by Thursday evening. Brutally cold
temperatures will exist across a majority of the cwa to start the
forecast period of Thursday night. 700mb temperatures of -15C to
-25C are expected to persist across the NE Panhandle. However,
 model guidance from the GFS and Canadian deterministic is
 beginning to pinpoint areas where the pressure gradients are
 potentially going to tighten overnight. Pressure gradients of
 5-15mb over the course of six hour periods will likely result in
 700mb winds approaching 45-55 knots between 0Z-12Z Friday. Omega
 fields do show alternating positive and negative lift zones, and
 500mb analysis depicts a mountain wave signature. It will be a
 tricky overnight forecast to pin down due to the potential for
 downsloping effects from the low and mid-levels warming
 adiabatically overnight. We could easily see negative sub-zero
 temperatures initially, and then quickly warming up into the
 positive teens to potentially 20s where the strongest wind gusts
 exists along and due east of the wind prone corridors. Strong
 northwest flow aloft is also anticipated to create orographic
 enhancement of snow showers for the Snowy/Sierra Madre mountains
 as a shortwave disturbance approaches the Intermountain west from
 early Friday through Friday afternoon.

The cold air will persist through Friday evening for the NE
Panhandle forecast zones as strong CAA continues to funnel into the
region. Forecast highs in the single digits to teens are expected at
this this point for the NE Panhandle. However, southeast WY will see
a rise in temperatures as downslope winds continue to adiabatically
warm a large portion of those areas. Wouldn't be surprised to see
20s to potentially near 30 degrees F in localized areas due east of
the Laramie Range on Friday, but there will be a sharp gradient.
Have not bumped up temperatures to reflect this entirely as some of
the model guidance is not in agreement with this solution presently.
WAA will occur beginning Friday night as heights in the lower and
mid-levels begin to increase thanks to an upper level ridge
amplifying. Some members of the extended guidance have a shortwave
riding along the northwest flow aloft Friday night into Saturday
afternoon. This shortwave is expected to slide to our south with
most of its energy, bringing snowfall to the mountains west of the
Laramie Range, but QPF looks low. Daytime highs will be in the 20s
and 30s on Saturday. Localized downslope warming is possible on
Saturday east of the Laramie Range thanks to gusty winds making a
return to the area. At this time of inspection, the wind prone/gap
corridors of Bordeaux and Arlington/Elk Mountain are favored for
strong winds of 50-60mph on Saturday. Additional upper level ridge
amplification is expected on Sunday into Monday, with near seasonal
to above average temperatures in the 30s and 40s. Tuesday will see
additional upper level ridge amplification, and daytime highs in
the 30s and 40s are also favored, with possible localized areas as
warm as the lower 50s.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1010 AM MST Tue Dec 20 2022

Low ceiling heights have mixed out earlier than expected today
over the Nebraska panhandle. Therefore, VFR is expected for the
day at most terminals. Blowing snow may become an issue at RWL
later this evening however VIS should remain above MVFR levels.
Wind shear is likely at most terminals later today and this
evening as fast flow aloft moves in. While surface winds will
remain elevated especially at higher elevation terminals, winds
aloft approaching 40-50 knots will result in a longer duration
period of wind shear in the forecast through Wednesday morning.

&&

.FIRE WEATHER...
Issued at 426 AM MST Tue Dec 20 2022

Extreme cold temperatures & widespread light to moderate snow will
keep fire weather concerns limited Wednesday through Friday.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Wind Chill Warning from 5 AM Wednesday to 11 AM MST Friday for
     WYZ101>103.

     Wind Chill Warning from noon Wednesday to 11 AM MST Friday for
     WYZ107-108-118-119.

     High Wind Watch from Wednesday morning through Wednesday
     afternoon for WYZ101-104-105-109-111-113-115-118.

     Wind Chill Warning from 2 PM Wednesday to 11 AM MST Friday for
     WYZ104>106-109>111-113-115>117.

     High Wind Watch from 8 PM MST this evening through Wednesday
     afternoon for WYZ106-107-116-117.

     High Wind Warning until 5 PM MST Wednesday for WYZ110.

     Winter Storm Warning from 5 PM this afternoon to 5 AM MST
     Thursday for WYZ112-114.

     Wind Chill Warning from 5 AM Thursday to 11 AM MST Friday for
     WYZ112-114.

     High Wind Warning until 2 PM MST this afternoon for WYZ116.

NE...Wind Chill Warning from 5 AM Wednesday to 11 AM MST Friday for
     NEZ002-003-095-096.

     Wind Chill Warning from noon Wednesday to 11 AM MST Friday for
     NEZ019>021-054-055.

&&

SHORT TERM...CLH
LONG TERM...BW
AVIATION...MAC
FIRE WEATHER...CLH

Hazardous Weather Outlook
National Weather Service Cheyenne WY
308 PM MST Mon Dec 19 2022

NEZ019>021-054-055-096-WYZ101-103>109-111>119-202215-
Scotts Bluff County-Banner County-Morrill County-Kimball County-
Cheyenne County-Southern Sioux County-
Converse County Lower Elevations-North Laramie Range-
Ferris/Seminoe/Shirley Mountains-Shirley Basin-
Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
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-
308 PM MST Mon Dec 19 2022

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Dangerous and bitter cold wind chill temperatures are expected
Wednesday through Friday across southeast Wyoming and the western
Nebraska Panhandle. Periods of snow will also accompany the
arrival of the arctic airmass, with light snowfall accumulations
expected Wednesday night. Please see the latest Wind Chill Watch
for additional details on this extreme cold event.

.Spotter information statement...

Spotter activation will not be needed.

WYZ110-202215-
North Snowy Range Foothills-
308 PM MST Mon Dec 19 2022

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

High Wind Warning extended through mid-morning Tuesday. Wind gusts
45 to 55 mph expected with occasional gusts to 65 mph possible,
especially along Interstate 80 near Arlington and Elk Mountain.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Dangerous and bitter cold wind chill temperatures are expected
Wednesday through Friday across southeast Wyoming and the western
Nebraska Panhandle. Periods of snow will also accompany the
arrival of the arctic airmass, with light snowfall accumulations
expected Wednesday night. Please see the latest Wind Chill Watch
for additional details on this extreme cold event.

.Spotter information statement...

Spotter activation will not be needed.

NEZ002-003-095-WYZ102-202215-
Dawes County-Box Butte County-Northern Sioux County-
Niobrara County-
308 PM MST Mon Dec 19 2022

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

Wind Chill Advisory in effect tonight through mid-morning Tuesday.
Wind chill values as low as 25 below zero possible, especially
near Chadron and Alliance.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Dangerous and bitter cold wind chill temperatures are expected
Wednesday through Friday across southeast Wyoming and the western
Nebraska Panhandle. Periods of snow will also accompany the
arrival of the arctic airmass, with light snowfall accumulations
expected Wednesday night. Please see the latest Wind Chill Watch
for additional details on this extreme cold event.

.Spotter information statement...

Spotter activation will not be needed.