textproduct: Cheyenne

KEY MESSAGES

- Cold temperatures continue today, with another chance at sub negative 15F wind chill values tonight into Sunday morning.

- Another arctic front will push through the region Sunday, leading to frigid temperatures and wind chill values possible again Sunday night into Monday morning.

- The arctic front on Sunday will promote the development of widespread snowfall once again, with current accumulations between 0.5 and 1.5 inches possible.

UPDATE

Issued at 415 AM MST Sat Jan 24 2026

Frigid wind chill values are ongoing across Dawes County with the lowest value around -37F. The snowpack has allowed temperatures to drop more than forecast. Decided to upgrade the Cold Weather Advisory for Dawes County to an Extreme Cold Warning. Frigid wind chill values expected to continue through noon today.

SHORT TERM /THROUGH SUNDAY NIGHT/

Issued at 157 AM MST Sat Jan 24 2026

Cold temperatures will persist throughout much of the weekend as upper-level trough remains in place aloft. The upper-level trough that brought the region snow and cold temperatures will continue to rotate across the Intermountain West, without propagating very far east. Weak, 500mb cyclonic vorticity advection is expected today, prevent the trough from moving very far east and keeping the cold temperatures. The CWA will remain near the base of the upper-level trough for the next day or so, before the trough finally starts pushing off to the east. Northwesterly flow at 700mb persists today, continuing to advect in cool, dry air from southern Canada. 700mb temperatures will remain around -18 to -15C today, as the upper- level trough remains firmly in place. Therefore, another cold day is expected across the CWA with high temperatures in the teens everywhere. Winds will continue be light today, leading to warmer wind chill values in around to above 0F. The Cold Weather Advisory continues until noon today, when wind chill values warm past criteria. Snowfall has started coming to an end as of 08Z this morning and will continue move out of the area through about 12Z this morning.

Overnight tonight, temperatures will drop back into the low single digits to negative teens across the region. With the fresh snow pack across the Nebraska Panhandle, did drop temperatures overnight as temperatures tanked more than expected this morning and the Panhandle tends to get very cold when cold air and a fresh snow pack are in place. Winds tonight will be weaker, however, with the possibility of negative teens in the Panhandle, combined with a fresh snow pack even light breezes could drop wind chill values back towards the -20F mark. There is some uncertainty in this, due to increasing cloud cover once again tonight. Decided to let day shift take another look at temperatures and winds to determine if Cold Weather Advisories are needed for the Panhandle once again tonight.

Another surface low pressure system looks to develop off the Black Hills this evening through the overnight hours. This low will bring the next blast of arctic air as the attendant cold front slides across the region. The arctic front will pass through the region late Sunday morning through the early afternoon hours. 700mb plummet from the -17 to -15C range to the -20s and colder. High temperatures on Sunday are a little uncertain due to frontal timing, but as of now highs look to reach the teens by the early afternoon before quickly falling behind the front. Overnight lows Sunday into Monday morning drop into the negatives once again. Unfortunately, a modest pressure gradient looks to set up across the region as the low moves off to the southeast and Canadian high pressure slides into the northern CONUS. As a result, overnight wind chill values look to potentially hit the -20F and colder mark, so Cold Weather headlines may be needed in future forecast packages. The arctic front looks to also bring another round of snow showers from the region, with accumulations in the 0.5 to 1.5 inch range. Assuming the snow pack from Friday remains in place, the Nebraska Panhandle may see colder temperatures, likely in the negative double digits, especially as fresh snow falls across the Panhandle.

LONG TERM /MONDAY THROUGH FRIDAY/

Issued at 157 AM MST Sat Jan 24 2026

No major changes, see previous discussion below.

The cold lingers through Sunday to start the long term as morning lows continue to sit in the low single digits to negatives, while highs struggling to get out of the teens for the day. Meanwhile a passing system should help to produce another round of snow for the region, but once again a lack of more significant moisture should preclude us seeing much more than an inch or two across most zones. Lows descend similarly on Monday morning, but as ridging takes over the western US once again temperatures will rebound back to near normal or just under on Monday, with highs in the 30's to low to mid 40's through the remainder of the week. Pressure gradients tighten on Monday though and bring another round of high winds, which will likely be the primary hazard in the long term. In house guidance has dropped a little bit, with probabilities now 60-75% for the wind prone locations to see high wind gusts (58 mph) or greater, which are still high enough to encourage the need for High Wind products as we approach Monday. Thereafter, some passing systems may continue to promote breezy winds, but the main moisture should remain just outside of our region, with dry conditions and benign conditions otherwise.

AVIATION /18Z TAFS THROUGH 18Z SUNDAY/

Issued at 1039 AM MST Sat Jan 24 2026

A mix of flight categories expected as snow moves across the region. A quick snow shower has moved over KRWL, and may continue to bring MVFR conditions or lower through the next hour or two but should move out. Conditions should mostly be fair and VFR for all sites through the start of the night, but snow will begin to move back in overnight into tomorrow morning. This will bring CIGs down to mid levels at first, but as snow showers move across sites expect low level CIGs bringing MVFR or worse conditions. VIS will also lower with any snow. Winds for the most part expected to remain around 5-15 knots through the period, though an occasional higher breezy wind can't be ruled out.

CYS WATCHES/WARNINGS/ADVISORIES

WY...Cold Weather Advisory until noon MST today for WYZ102-108. NE...Extreme Cold Warning until noon MST today for NEZ002. Cold Weather Advisory until noon MST today for NEZ003-019>021- 054-055-095-096.