textproduct: Cheyenne

KEY MESSAGES

- High winds are possible for the wind-prone areas in southeast Wyoming on Wednesday.

- Colder temperatures are expected much of the week, behind a cold front that swept through the region.

- The probability of an arctic cold front is increasing for next weekend which will usher in very cold temperatures and accumulating snowfall, though models continue to see notable variability.

SHORT TERM /THROUGH WEDNESDAY NIGHT/

Issued at 333 PM MST Tue Nov 25 2025

Not much to write home about for the remainder of today as the strong winds that have been plaguing the typical wind prone areas across southeast Wyoming and in the Nebraska Panhandle have subsided. Thus, we went ahead and canceled the High Wind Warnings that were in place for northern portions of the Nebraska Panhandle. So, for the remainder of today, expect benign weather with plentiful sunshine and generally light and variable winds. Temperatures are at their peak and expect them to plunge after sunset, dipping down into the teens and low 20s. Focusing on temperatures, tomorrow's highs and lows will be some 5 to 10 degrees warmer across the CWA.

Lets shift our focus back to winds, during the morning hours on Wednesday, winds will once again ramp up in our typical wind prone areas in southeast Wyoming. An approaching mid-level disturbance and associated jet maxima at 700mb of nearly 60 knots coupled with negative Omega (GFS) will aid in mixing these winds down to the surface, resulting in gusts up to 55 mph. So, expect high winds for Arlington and possibly across the South Laramie Range. However, due to the frequency and intensity of the gusts, high wind products will not be issued at this time. Shifting to precipitation, a plume of moisture will move in at mid-levels, hi-res guidance depicts increased chances of scattered light snow showers across the CWA Wednesday morning into the afternoon hours, with little to now accumulations expected.

LONG TERM /THURSDAY THROUGH MONDAY/

Issued at 333 PM MST Tue Nov 25 2025

Main story in the long term remains the weekend system leading to colder temperatures and a chance of widespread snowfall for the CWA. Thursday should be mostly dry and Friday will actually be a few degrees warmer thanks to a transitory weak ridge moving across the region, with notably above normal temperatures for our area. But a deepening trough across the western US will bring an arctic airmass that will drop our highs and lows through the weekend alongside bringing a chance of precipitation for all zones. Latest runs of the NBM have dialed back our precipitation chances, and looking at ensembles it does look like the expected moisture has dropped thankfully in part to the overall trough not being quite as strong or as deep as in yesterday's runs. But there should still be enough moisture and temperatures cold enough that any precipitation that can occur will fall in the form of snowfall for all zones, and could accumulate, particularly on elevated surfaces and grassy areas for regions that have been warm or haven't seen heavy snowfall yet. The mountains should still see several inches as well, possibly prompting winter headlines though the duration will be over several days. Meanwhile the slightly weaker trough means the NBM has dialed back a small portion of the colder temperatures, but overall the spread in percentiles is still nearly similar to yesterday with Sunday being the coldest day as highs won't make it past freezing, and lows overnight into Monday morning in the very low teens to single digits. We should see temperatures warm a few degrees into Monday as the trough starts to exit, but just beyond the long term another burst of cold may be possible and our warmup should be brief.

AVIATION /00Z TAFS THROUGH 00Z THURSDAY/

Issued at 500 PM MST Tue Nov 25 2025

Upper level trough, which brought the windy and cold temperatures today, will rapidly move east tonight...leaving broad northwest flow aloft over the Front Range for the next 24 hours.

HAZARDS/WEATHER TRENDS: VFR conditions will prevail tonight and Wednesday with winds becoming light and variable by 02z. Can't rule out a few snow showers for KRWL, KLAR, and even KCYS and KSNY after 15z Wednesday, but confidence is pretty low on any reductions to VIS or CIGS.

CYS WATCHES/WARNINGS/ADVISORIES

WY...None. NE...None.