Chadron, Nebraska 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

626
FXUS65 KCYS 111729
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
1029 AM MST Thu Dec 11 2025

.KEY MESSAGES...

- The long duration high wind event will continue Thursday with
  winds slowly diminishing Thursday night.

- The wind prone areas along I-80 and I-25 can expect another
  round of wind gusts between 70 and 80 mph. A few gusts
  exceeding 80 mph are possible.

- Cheyenne, Laramie, Rawlins, and Wheatland can expect wind
  gusts between 60 and 70 mph, but occasional lulls or breaks in
  the high winds are expected with this round.

- Arctic cold front will brush eastern Wyoming and the northern
  Nebraska Panhandle late Friday and Friday night. Much colder
  temperatures and some light snow possible as far west as the
  Interstate 25 corridor into Saturday morning.

&&

.SHORT TERM /THROUGH SATURDAY/...
Issued at 325 AM MST Thu Dec 11 2025

Primary forecast concern Thursday and Friday will continue to be
strong winds, mainly confined over southeast Wyoming, but can`t
rule out some gusts approaching 60 MPH for far western Nebraska
today. West to southwest winds have continuously gusted between
60 to 75 MPH early this morning, and seeing no sign of this
changing over the next several hours. Of course, there will be
brief 1 hour lulls with the strongest winds, but these are very
difficult to nail down for timing. The only minor change early
this morning is the addition of Converse County to the High Wind
Warning with Deer Creek, along Interstate 25, reporting gusts
of 60 MPH around midnight. All other Warnings continue to look
on track, so no other changes planned. Two High Wind Watches
remain in effect due to limited confidence, and these are far
eastern Laramie County (Pine Bluffs) and northern Laramie Valley
(Shirley Basin). Both locations have observed breezy conditions
at best so far, so will likely keep the Watch going for now.
Afternoon temperatures today will be relatively mild with highs
in the 50s west of I-25, and 60s for the high plains of western
Nebraska and eastern Wyoming. Of course, apparent temperatures
will feel cooler due to the strong gusty winds. Not expecting
much change to the wind speeds through this afternoon (other
than some brief fluctuations) with 700mb winds remaining over
60+ knots for the Warned area.

For tonight and Friday, models show the leading edge of the
arctic cold front digging south across the Dakotas and into east
central Wyoming and the northern Nebraska Panhandle. The
leading edge of the front westward extent should stop just shy
of the I-25 corridor tonight, but temperatures will be much
colder compared to early this morning with lows in the 20s and
low 30s. Winds are still expected to dissipate outside of the
wind prone areas, plus Bordeaux, once surface pressure
tendencies become positive over the high plains. Once we get
past midnight early Friday morning, Arlington and the I-80
Summit should be the only areas observing strong winds due to
favorable west-northwest winds. Further northeast, kept a
mention of snow in the forecast from eastern Converse County
east towards Dawes county...including the Pine Ridge through
Friday. Most of these areas will see up to an inch of snowfall
through Friday afternoon. Much colder temperatures expected
behind the arctic front, with highs only in the 20s for
Niobrara, Sioux, and Dawes/Box Butte Counties...nearly a 40
degree drop compared to Thursday.

Arctic front will make additional westward progress Friday
night, likely moving into the I-25 corridor. There is a chance
that the front will move into the I-25 corridor much
earlier...closer to Friday evening, but these ensemble solutions
are in the 10th to 20th percentile. Low temperatures along the
I-25 corridor will be tricky, since areas just east of the front
will likely be in the 20s and teens, while low to mid 30s are
expected west of the front. Utilized NBM, GEFs, and ENS 50th
percentile temperatures to show the most likely outcome with the
frontal position for now. After a brief lull in the winds Friday
afternoon...winds will increase again Friday night, but mainly
confined to the wind prone areas. This event will likely be
brief since all models suggest one last arctic push Saturday
morning, with strong winds diminishing quickly through the
afternoon hours. High temperatures on Saturday will be even
colder across east central Wyoming and most of western
Nebraska...with temperatures in the 20s north and east of the
North Platte River Valley. Light snow should come to an end
early Saturday morning over the Pine Ridge region with little
or no snow along the I-25 corridor.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
Issued at 350 AM MST Thu Dec 11 2025

Minor changes made in the long term with a relatively benign
weather pattern across the western United States. Primary
forecast concern will be the departure of the arctic airmass
across the plains on Sunday and forecast lows/highs for Saturday
night/Sunday respectively. Models and ensemble are in pretty
good agreement with the arctic airmass exiting the region and
deeper boundary layer mixing resulting in high temperatures
returning to the 50s to near 60 across far eastern Wyoming and
western Nebraska under west to southwest winds. However, not
sure if this will occur in the morning or afternoon hours due to
timing differences. Thankfully, all models show the recent very
windy pattern coming to an end and the exit of the arctic
airmass to our east for early to mid next week. Mild temperatures
are expected next week with little chance for snowfall as zonal
flow develops across the region with a weak flat ridge axis
over the Intermountain West. The next Pacific cold front is not
expected to move towards the regions until late Wednesday and
Thursday of next week.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1029 AM MST Thu Dec 11 2025

VFR conditions will prevail the southeast Wyoming terminals,
and for the next 12 hours for the western Nebraska terminals.
As the arctic front slides south across KCDR, KAIA, and KBFF
late this evening after 03z Friday, MVFR CIGS and light
snow/rain will develop. Further west, primary forecast concern
will be strong winds and periods of LLWS. Gusts of 45 to 55
knots are expected at KRWL, KLAR, and KCYS. Winds aren`t
expecting to diminish much until late this afternoon and this
evening.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Warning until 5 PM MST this afternoon for WYZ101-104-
     107-109-113-115-118-119.
     High Wind Watch until 5 PM MST this afternoon for WYZ105.
     High Wind Warning until midnight MST tonight for WYZ106-117.
     High Wind Warning until 5 AM MST Friday for WYZ110-116.
NE...None.

&&

$$

SHORT TERM...TJT
LONG TERM...WFOCYS
AVIATION...WFOCYS