High Wind Warning 48, NWS Cheyenne, WY

365 
WWUS75 KCYS 012114
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
214 PM MST Mon Dec 1 2025

WYZ110-021200-
/O.CON.KCYS.HW.W.0048.000000T0000Z-251203T0300Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
214 PM MST Mon Dec 1 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY...

* WHAT...West winds 35 to 45 mph with gusts up to 70 mph possible.

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

* WHEN...Until 8 PM MST Tuesday.

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

* ADDITIONAL DETAILS...Areas of blowing snow are also possible from 
  any snowfall on Sunday. Visibilities may be reduced to 1 mile or 
  less.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous high 
wind event. Sustained wind speeds of at least 40 MPH or gusts of 58 
MPH or stronger may occur. Continue to monitor the latest forecasts.

&&

$$

WYZ106-116-117-021200-
/O.CON.KCYS.HW.W.0048.251202T0300Z-251202T1900Z/
Central Laramie Range and Southwest Platte County-South Laramie
Range-South Laramie Range Foothills-
Including the cities of Pumpkin Vine, Horse Creek, Federal,
Vedauwoo, Bordeaux, Whitaker, and Buford
214 PM MST Mon Dec 1 2025

...HIGH WIND WARNING REMAINS IN EFFECT FROM 8 PM THIS EVENING TO 
NOON MST TUESDAY...

* WHAT...West winds 30 to 45 mph with gusts around 65 mph possible.

* WHERE...South Laramie Range and Foothills including the Interstate 
  80 Summit between Cheyenne and Laramie, and Bordeaux area along 
  Interstate 25 between Chugwater and Wheatland.

* WHEN...From 8 PM this evening to noon MST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous high 
wind event. Sustained wind speeds of at least 40 MPH or gusts of 58 
MPH or stronger may occur. Continue to monitor the latest forecasts.

&&

$$

CG

254 
WWUS75 KCYS 012142
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
242 PM MST Mon Dec 1 2025

WYZ106-116-117-021200-
/O.EXT.KCYS.HW.W.0048.251202T0300Z-251203T0000Z/
Central Laramie Range and Southwest Platte County-South Laramie
Range-South Laramie Range Foothills-
Including the cities of Pumpkin Vine, Horse Creek, Federal,
Vedauwoo, Bordeaux, Whitaker, and Buford
242 PM MST Mon Dec 1 2025

...HIGH WIND WARNING NOW IN EFFECT FROM 8 PM THIS EVENING TO 5 PM 
MST TUESDAY...

* WHAT...West winds 30 to 45 mph with gusts around 65 mph possible.

* WHERE...South Laramie Range and Foothills including the Interstate 
  80 Summit between Cheyenne and Laramie, and Bordeaux area along 
  Interstate 25 between Chugwater and Wheatland.

* WHEN...From 8 PM this evening to 5 PM MST Tuesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous high 
wind event. Sustained wind speeds of at least 40 MPH or gusts of 58 
MPH or stronger may occur. Continue to monitor the latest forecasts.

&&

$$

WYZ110-021200-
/O.CON.KCYS.HW.W.0048.000000T0000Z-251203T0300Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
242 PM MST Mon Dec 1 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST TUESDAY...

* WHAT...West winds 35 to 45 mph with gusts up to 70 mph possible.

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

* WHEN...Until 8 PM MST Tuesday.

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

* ADDITIONAL DETAILS...Areas of blowing snow are also possible from 
  any snowfall on Sunday. Visibilities may be reduced to 1 mile or 
  less.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A High Wind Watch means there is the potential for a hazardous high 
wind event. Sustained wind speeds of at least 40 MPH or gusts of 58 
MPH or stronger may occur. Continue to monitor the latest forecasts.

&&

$$

CG

487 
WWUS75 KCYS 020916
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
216 AM MST Tue Dec 2 2025

WYZ106-116-117-030000-
/O.CON.KCYS.HW.W.0048.000000T0000Z-251203T0000Z/
Central Laramie Range and Southwest Platte County-South Laramie
Range-South Laramie Range Foothills-
Including the cities of Buford, Whitaker, Horse Creek, Vedauwoo,
Federal, Bordeaux, and Pumpkin Vine
216 AM MST Tue Dec 2 2025

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

* WHAT...West winds 30 to 40 mph with gusts up to 65 mph.

* WHERE...South Laramie Range and Foothills including the Interstate 
  80 Summit between Cheyenne and Laramie, and Bordeaux area along 
  Interstate 25 between Chugwater and Wheatland.

* WHEN...Until 5 PM MST this afternoon.

* IMPACTS...Mainly to transportation. Strong cross winds will be 
  hazardous to light weight or 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 stronger can lead to property damage.

&&

$$

WYZ110-030000-
/O.CON.KCYS.HW.W.0048.000000T0000Z-251203T0300Z/
North Snowy Range Foothills-
Including the cities of Arlington and Elk Mountain
216 AM MST Tue Dec 2 2025

...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING...

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

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

* WHEN...Until 8 PM MST this evening.

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

* ADDITIONAL DETAILS...Areas of blowing snow are also possible. 
  Visibilities may be reduced to 1 mile or less.

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 stronger can lead to property damage.

&&

$$

Fuller

822 
WWUS75 KCYS 022340
NPWCYS

URGENT - WEATHER MESSAGE
National Weather Service Cheyenne WY
440 PM MST Tue Dec 2 2025

WYZ110-030045-
/O.CAN.KCYS.HW.W.0048.000000T0000Z-251203T0300Z/
North Snowy Range Foothills-
Including the cities of Elk Mountain and Arlington
440 PM MST Tue Dec 2 2025

...HIGH WIND WARNING IS CANCELLED...

Winds have diminished below warning thresholds. Therefore, the High 
Wind Warning will be allowed to expire.

$$

WYZ106-116-117-030045-
/O.EXP.KCYS.HW.W.0048.000000T0000Z-251203T0000Z/
Central Laramie Range and Southwest Platte County-South Laramie
Range-South Laramie Range Foothills-
Including the cities of Bordeaux, Horse Creek, Pumpkin Vine,
Vedauwoo, Whitaker, Federal, and Buford
440 PM MST Tue Dec 2 2025

...HIGH WIND WARNING WILL EXPIRE AT 5 PM MST THIS AFTERNOON...

Winds have diminished below warning thresholds. Therefore, the High 
Wind Warning will be allowed to expire.

$$

MN

Area Forecast Discussion
National Weather Service Cheyenne WY
1014 PM MST Sun Nov 30 2025

.KEY MESSAGES...

- A winter weather advisory is in effect for the Sierra Madre
  and Snowy mountains for snow accumulations up to 10 inches.

- A High Wind Watch has been issued for the wind prone areas of
  southeast Wyoming beginning Monday evening.

- Long term remains active with multiple systems promoting
  prolonged periods of high winds alongside mountain snow and
  chances of lower elevation snow as well.

- Temperatures will remain very cold through mid-week, before a
  weak warming trend arrives Wednesday onwards.

&&

.SHORT TERM /THROUGH TUESDAY/...
Issued at 339 PM MST Sun Nov 30 2025

Mid-level water vapor shows the low tracking farther north than the
models had it yesterday. Recent model runs have severely decreased
QPF and snow accumulations. A weighted blend of old grids/NBM/NAM12
was used to retain advisory level snow accumulations for the
mountains but also add in some light snow accumulations for almost
everywhere east of I-25. As this system pushes east-southeast, the
synoptic forcing from the low passing over Southeast Wyoming should
be enough for light stratiform snow over the next 12 hours. While
accumulations wont be anything substantial accumulation's of a few
tenths can't be ruled out. There is also a little bit more moisture
than what the global and hi-res models are advecting in. Surface
dewpoints and RH levels are showing up a little higher than what the
models are forecasting. So there should be a sufficient amount
available to utilize that greater synoptic forcing to carry snow
production outside of the mountains. As this system rides the CO/WY
border it will drag cold dry air down from Canada abruptly ending
the light snowfall early Monday morning. A 700mb jet starts to
develop Monday afternoon causing the wind gusts to increase. Most of
the models have the jet increasing between 60 to 65kts by 06z or
midnight Monday going into Tuesday. Over the past couple runs the
global omega fields have been steadily increasing the subsident flow
over our wind prones concurrently with the increasing 700mb jet. Our
in-house guidance still maintains high confidence (80-90% probs) of
reaching high wind criteria by 00z Monday for the Arlington area.
However, the timing of jet intensification provided by the models is
a little delayed compared to our in-house guidance. Given there is a
little bit more time before headline decisions have to be made. So,
the watch was continued with no alterations to the timing.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SUNDAY/...
Issued at 339 PM MST Sun Nov 30 2025

Long term remains active thanks to multiple systems bringing
rounds of precipitation alongside long durations of high winds,
with temperatures steadily warming during the later part of the
week to bring us back to near normal by the weekend.

The long term starts on Tuesday as an upper level trough will
sweep down the western US and will deepen into a near cutoff low,
with the strongest part of the system remaining well to the
south as this feature moves across the Four Corners area. But
then moving into the weekend, a weak ridge will try and take
over, but will be flattened by a quick moving trough into
Saturday. Under this pattern, we'll see our first round of high
winds beginning just before the long term on Monday and
continuing into Tuesday afternoon, weakening thereafter. A high
wind watch is already out through 03Z Wednesday for our usual
wind prone locations, and we will likely see that upgraded
within the next 24 hours as models have remained consistent on
700mb winds in the 60-70 knot range, favorable downward omegas,
and strong, favorable pressure gradients across the area. In
house guidance continues to produce a 70-80% probability of high
winds as well, leading to very high confidence. Meanwhile a few
models have shown some increased QPF which would lead to higher
snowfall, but the majority of ensembles and the NBM are keeping
QPF in the mountains and to our south, so the expectation
remains we'll see amounts high enough to warrant products, at
least advisories, in the mountains, with around 1-3 inches in
the lower terrain thanks to shadowing effects.

Moving into Wednesday and Thursday, both days should be
relatively calm and dry as the ridge tries to build in, but our
winds will once again begin increasing on Thursday in response
to the next approaching system as pressure gradients tighten and
the 700mb jet begins to re-establish and remain firmly planted
over the CWA through the weekend. In house guidance continues to
highlight this period and with such consistency there is
moderate to high confidence in a multi-day high wind event once
again for our wind prone regions. Meanwhile models expect that
this flow should allow for more chances of mountain snowfall
with some of this able to spill over into the adjacent high
plains, but once again shadowing effects are likely going to
limit how much accumulation we can produce outside of the high
terrain. Finally our temperatures start off near normal on
Tuesday with highs in the 30's to 40's, dropping notably on
Wednesday thanks to the passage of the front with the first
system and highs not making it out of freezing, but as the
ridge tries to take control through the weekend a modest warming
trend should bring us back to the 30's and 40's by Saturday.

&&

.AVIATION /06Z TAFS THROUGH 06Z TUESDAY/...
Issued at 1012 PM MST Sun Nov 30 2025

Snow showers are slowly tapering off across southeast Wyoming
and western Nebraska. IFR ceilings have remained behind at KCYS,
with MVFR to near-IFR ceilings possible at KLAR in the next few
hours. Ceilings remain at VFR status in the Panhandle, though
visibility will fluctuate with remaining snow shower activity
across KBFF, KSNY, and KAIA for the next 1 to 3 hours. Clouds
slowly clear out overnight with light winds. Gusty conditions
return for the afternoon hours with clear skies expected at most
terminals.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Watch from Monday evening through Tuesday morning
     for WYZ106-116-117.
     High Wind Watch from Monday afternoon through Tuesday evening
     for WYZ110.
     Winter Weather Advisory until 5 AM MST Monday for WYZ112-114.
NE...None.

&&

SHORT TERM...MM
LONG TERM...CG
AVIATION...AM

Hazardous Weather Outlook
National Weather Service Cheyenne WY
342 PM MST Sun Nov 30 2025

NEZ002-003-019>021-054-055-095-096-WYZ101>119-012245-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
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-
342 PM MST Sun Nov 30 2025

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

Snow will spread east latethis afternoon. A Winter Weather
Advisory remains in effect for the Sierra Madre Range and Snowy
Range of southeast Wyoming through tonight for 6 to 10 inches of
snow. Up to 4 inches of snow possible for locations adjacent to
the mountains.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A High Wind Watch is in effect for the wind prone areas of
southeast Wyoming Monday evening through Tuesday. Gusts up to 70
MPH are possible.

.Spotter information statement...

Spotter activation will not be needed but snow reports are
appreciated.