textproduct: Cheyenne

KEY MESSAGES

- Cold Weather Advisories for the Nebraska Panhandle and Niobrara County have been extended through 8 AM Monday. Cold Weather Advisories have been issued for Goshen County and central and eastern Laramie County from 5 PM tonight through 5 AM Monday.

- High Wind Warning have been issued for the typical wind prone areas from early Monday morning through early Tuesday morning.

SHORT TERM /THROUGH MONDAY NIGHT/

Issued at 144 PM MST Sun Jan 25 2026

700mb temperatures remain about -25C through this evening. As the upper level trough pushes through the Intermountain West 700mb temperatures will gradually rise from the North to the South. Winds are expected to turn westerly behind the trough and a nocturnal 700mb jet starts to develop. Strong subsident flow also develops elevating the winds early Monday morning. The Craig to Casper gradient starts to exceed 70meters around 09z on Monday with the GFS omega fields showing maxed out subsident flow values by 12z. Around that time the 700mb jet floats between 55 and 65knots. By 21z the Southeast Wyoming wind prone areas should see the strongest winds at around 65-70kts at 700mb. This should roughly translate to 70 to 75 mph wind gusts for our wind prone areas. The high wind watch was upgraded to a high wind warning starting at 06z and ending around 12z Tuesday. Our winds look to slowly calm down after 06z Tuesday but with the stronger subsident flow lasting until 12z Tuesday the original timing was kept.

Surface temperatures looked to have peaked this morning with the warm air advection pushing through Southeast Wyoming and the Nebraska Panhandle. On top of slightly rising surface temperatures this warm air advection provided the slightly more lift we needed for the stratiform snow to develop. The snow is expected to last through the afternoon as it slowly moves south. Almost of the Hi-res guidance has the snow ending around 01-02z Monday or this evening with some potential lingering showers near the southern periphery of our forecast area. The evening and overnight period gets tricky with temperatures. With mostly clear skies behind the snow showers. Temperatures will really plummet with optimal radiational cooling and the fresh fallen snow keeping the area rather cold. However, once our winds turn predominantly westerly and the winds start to kick up. Those surface temperatures will really start to climb as warm downsloping takes over. Minimum temperatures for tonight look to reach slightly into the negatives with a couple places possibly reaching zero degrees but then should climb in to the 30's and possibly 40's for Monday's highs. With the wind chills potentially reaching between -15 to -25 tonight before the winds kick-in the Cold weather advisory was kept through tonight into tomorrow and may possibly be expired early depending on when the downsloping winds start to make the temperatures rise.

LONG TERM /TUESDAY THROUGH SATURDAY/

Issued at 144 PM MST Sun Jan 25 2026

At the start of the long term period, the synoptic pattern is dominated by a ridge up the West Coast and a deep trough across the Upper Midwest and Great Lakes region. As we progress through the forecast period, the ridge slides into our CWA while the trough pushes ever so slightly to the east. So, expect a relatively benign week. An embedded shortwave dives south into our area Wednesday, which may bring an uptick in surface winds, especially in our wind prones across southeast Wyoming. However, most locations will remain below the high wind threshold with Arlington having the best chance with probabilities between 60-80%. Thereafter, ridging quickly builds back in and controls weather conditions across the region to round out the extended. With dry conditions, what about temperatures, will any additional cold surges make into our CWA? Well, the wintertime temperatures that we had this weekend will be a distant memory by Tuesday with temperatures soaring back to near or just above normal. Progressing through the work week, 700mb temps warm into next weekend as highs will soar into the mid 40s to mid 50s across the CWA. But first, at the start of this forecast period highs are expected to top out in the mid 30s west of I-25 and low to mid 40s east of the corridor, highs increasing ever so slightly through the work week. Low temps will reflect a similar pattern, increasing nightly, with Tuesday night lows dipping into the teens and by next weekend, only bottoming out in the low to mid 20s.

AVIATION /18Z TAFS THROUGH 18Z MONDAY/

Issued at 1030 AM MST Sun Jan 25 2026

Light snow is moving through the region and has been impacting all terminals across the CWA this morning with MVFR to IFR conditions, as low as LIFR at times. Skies will clear out by 03/04Z this evening, resulting in a return of VFR conditions for all terminals. After the snow stops and skies clear, winds will ramp up overnight into Monday morning with gusts up to 35 knots at the tail end of this forecast.

CYS WATCHES/WARNINGS/ADVISORIES

WY...Cold Weather Advisory until 8 AM MST Monday for WYZ102. High Wind Warning from 11 PM this evening to 5 AM MST Tuesday for WYZ106. Cold Weather Advisory from 5 PM this afternoon to 5 AM MST Monday for WYZ108-118-119. High Wind Warning from 11 PM this evening to 2 AM MST Tuesday for WYZ110. High Wind Warning from 2 AM Monday to 5 AM MST Tuesday for WYZ116-117. NE...Cold Weather Advisory until 8 AM MST Monday for NEZ002-003- 019>021-054-055-095-096.