FXUS65 KCYS 241712 AFDCYS Area Forecast Discussion National Weather Service Cheyenne WY 1112 AM MDT Fri Oct 24 2025 .KEY MESSAGES... - Mild and mostly dry conditions continue into the weekend. Winds will begin to increase across southeast Wyoming on Saturday. - Pattern change expected Sunday night into Monday with the potential for colder temperatures, rain and snow, and windy conditions. - Locally strong winds possible for the wind prone areas of southeast Wyoming Sunday night and Monday. && .SHORT TERM /THROUGH SATURDAY NIGHT/... Issued at 310 AM MDT Fri Oct 24 2025 Current IR Satellite loop shows the slow moving upper level trough trying to become closed off from the mean flow. Observed location is a bit further south than models have shown the last few days, with hardly any precipitation crossing into Wyoming from the Wyoming/Colorado border at this hour. Even cloud cover is limited to 25 miles north of the Colorado border with clear skies north of Interstate 80. Lowered POP this morning with another quiet day expected. Near normal temperatures expected this afternoon with highs in the mid 50s to mid 60s. Winds will remain relatively light today and tonight. Another mild pleasant day expected on Saturday, although winds will start to increase ahead of the next Pacific cold front. Short wave upper level ridge axis will slide east of the forecast area by mid afternoon, allowing south to southwest flow at the surface and aloft and 700mb temperatures near +6c. With good warm air advection, high temperatures in the 60s to near 70 are expected across southeast Wyoming, with 65 to 75 across western Nebraska. It will remain a little cooler on the south facing ridges...such as Sidney, Cheyenne, Kimball, and Alliance due to upslope southerly winds. Otherwise, a nice day to start off the weekend with southwest winds increasing from Carbon to Converse county. Clouds will likely increase from west to east Saturday night with winds increasing ahead of the Pacific cold front. Relatively mild Saturday night with lows in the 40s north of Interstate 80. && .LONG TERM /SUNDAY THROUGH THURSDAY/... Issued at 300 AM MDT Fri Oct 24 2025 Previous forecast package remains on track. In-house wind guidance has trended higher for locally strong gusty winds for most of the wind prone areas along with some of the sub-wind prone areas, such as eastern Platte County and northern Carbon county Sunday. Increased winds over these locations with forecast gusts near 55 to 60 mph. Will continue to monitor and may need a High Wind Watch if current trends continue. Previous discussion...(issued at 234 PM MDT Thu Oct 23 2025) An upper level low pushes into the Pacific Northwest Sunday and moves along the Canadian Providences. This low pressure system will send a cold front through the Intermountain West, late Sunday morning and into the early afternoon. This will begin our precipitation chances for light rain that will turn to a rain snow mix by the evening and eventually turning to all snow overnight West of the I-25 corridor. Looking east of the I-25 corridor temperatures are forecasted to be warm enough that any precipitation falling will likely stay as rain. By Tuesday the upper level low will be far enough east that our precipitation chances will end. Following the upper level trough, another ridge looks to set up over the Intermountain west to keep us dry for the rest of the work week. However, due to the progged westerly downslope flow most of the precipitation will struggle to make it to the surface resulting in small accumulations from any showers overhead Sunday and Monday. Also due to our downsloping westerly winds, it also looks to be fairly breezy in our wind prone and wind prone adjacent areas during this time as well. && .AVIATION /18Z TAFS THROUGH 18Z SATURDAY/... Issued at 1112 AM MDT Fri Oct 24 2025 Upper level ridge will keep winds relatively light (5 knots or less) and somewhat variable this afternoon and overnight. Tomorrow the winds will pick up in the morning with gusts around 20 knots expected after 15z. VFR Conditions are expected for the duration of the TAF period. && .CYS WATCHES/WARNINGS/ADVISORIES... WY...None. NE...None. && $$ SHORT TERM...SF LONG TERM...TJT/MM AVIATION...MM