Lakes Trail, Wyoming Weather Forecast Discussion

919
FXUS65 KCYS 012044
AFDCYS
Area Forecast Discussion
National Weather Service Cheyenne WY
244 PM MDT Wed Oct 1 2025
.KEY MESSAGES...
- Mild to warm temperatures will continue through Friday, before
  a potent weather disturbance aloft and its associated cold
  front bring cooler and wetter weather for Saturday through
  Monday.
&&
.SHORT TERM /THROUGH THURSDAY NIGHT/...
Issued at 236 PM MDT Wed Oct 1 2025
A bit breezy this afternoon as a weak upper-level shortwave moves
out of the area. Wind gusts of 25 to 35 MPH will persist through the
afternoon hours, but should begin to weaken this evening as the
shortwave moves further east into the middle of the country. Quiet
conditions are expected overnight with rather mild overnight lows
expected across the CWA.
An upper-level ridge building over the center of the country on
Thursday will allow quiet weather and mild temperatures to persist
into the back half of the work week. The ridge will put the CWA
under southwest flow, ushering in drier air and warmer air aloft.
700 mb temperatures will rise to about +10C, which is in the 90th
percentile for NAEFS climatology. As a result, high temperatures
will be in the 70s and 80s, which is about 10 to 20 degrees above
average for the start of October. Sunny skies will dominate on
Thursday as subsidence under the ridge helps keep clouds and
precipitation at bay. Another mild night will be expected Thursday
night as the ridge persists.
&&
.LONG TERM /FRIDAY THROUGH TUESDAY/...
Issued at 236 PM MDT Wed Oct 1 2025
At the start of the long term, a robust upper level trough digging
south into California will bring some changes into our CWA over the
weekend into next week, more on that later. Well, lets look to our
east with ridging nosing north across the Central Plains, clipping
eastern portions of the CWA and bringing pleasant conditions for
most of Friday, especially across eastern Wyoming and the Nebraska
Panhandle. This ridge coupled with the deep trough to our west will
bring southwest flow into our region and warmer temperatures. Highs
will top out in the mid 70s to low 80s west of I-25 and low to upper
80s east of the corridor, with the warmest holding firm across the
Nebraska Panhandle. Precipitation chances will be minimal Friday,
with the greatest threat during the evening and overnight hours
across western portions of the CWA as a surge of low to mid level
moisture pushes into the area. As we move into the weekend, the
robust upper level trough will slide east across our the region and
allow ample moisture to surge into our area with southwest flow in
place. This will produce widely scattered to numerous showers for
many locations along with a slight chance thunderstorms, primarily
south of a line from Rawlins to Scottsbluff, for most of Saturday.
All this activity will be aided with a passage of a cold front which
will bring stronger winds, especially in the wind prone areas, and
much cooler temperatures into the CWA. Heading into Sunday, the
robust upper level trough will have slid across the CWA and
precipitation chances will diminish through the day. Temperatures
will be on the cooler side once again due to 700MB temps around 0
degrees Celsius, resulting with daytime highs only climbing into the
mid 50s to lower 60s. What about lows for the weekend and early next
week, expect lows to dip down into the lower to mid 30s for many
locations. If you are wondering, there will be snow chances
primarily above 9K feet across the Snowy Range and Sierra Madres
with accumulations over a 48 hour period generally less than 3
inches. Heading into next week, weak ridging will push north into
our CWA and weather conditions will become relatively benign for the
remainder of the long term period. Any precipitation chances will be
widely scattered with upper level energy sliding across the region
Monday into Tuesday. Cooler temperatures will remain locked in with
highs struggling to reach the mid 50s to mid/upper 60s.
&&
.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1138 AM MDT Wed Oct 1 2025
VFR conditions are expected through the TAF period with some high
clouds floating across the area. Breezy conditions are expected
throughout the day at all terminals with gusts between 20 and 30
kts. Winds will ease this evening after sunset.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&
$$
SHORT TERM...SF
LONG TERM...RZ
AVIATION...SF

NWS CYS Office Area Forecast Discussion