Douglas, Wyoming Weather Forecast Discussion

914
FXUS65 KCYS 261733
AFDCYS
Area Forecast Discussion
National Weather Service Cheyenne WY
1133 AM MDT Fri Sep 26 2025
.KEY MESSAGES...
- An upper-level ridge keeps the region drier today through the
  weekend with temperatures warming back into the 70s and 80s.
- Gusty winds are expected in the wind-prone regions on Friday
  alongside enhanced fire weather concerns.
&&
.SHORT TERM /THROUGH SATURDAY NIGHT/...
Issued at 228 AM MDT Fri Sep 26 2025
Another mostly quiet day is expected today as upper-level ridging
remains in place. An upper-level trough is moving into the CONUS
from the Pacific Ocean this morning and will quickly advect easterly
throughout the morning hours, impacting the region later this
morning into the early afternoon hours. Dry conditions leading up to
this trough will prevent any precipitation this afternoon, though a
few more clouds may be in the sky. The associated 700mb trough will
traverse just to the north of the CWA, but westerly flow at the base
of the trough will still be present across the Laramie Range. With a
meager 700mb jet around 30 to 35kts and strong low-level lapse
rates, some of these winds will mix down to the surface. As a
result, winds will increase significantly across the wind prone
regions and downstream of the Laramie Range. High Winds are not
expected, but gusts approaching 40 to 45 mph cannot be ruled out in
most locations east of the Laramie Range. With downsloping from
these winds, drier conditions are expected leading to elevated fire
weather concerns this afternoon as humidity values drop into the 15
to 20 percent range for a portion of the afternoon. Some values may
briefly drop into the 14 to 16 percent range with the gusty winds,
but three consecutive hours are not expected and, therefore, not
fire weather headlines have been issued. Saturday will be another
quiet day with winds subsiding Friday evening. Temperatures remain
warm, in the low-70s to low-80s both Friday and Saturday.
Precipitation is not expected.
&&
.LONG TERM /SUNDAY THROUGH THURSDAY/...
Issued at 207 PM MDT Thu Sep 25 2025
Pretty benign weather across the CWA to start the long term as the
region remains under high pressure, bringing pleasant weather
conditions. Highs Saturday will top out in the 70s to low 80s under
clear skies. For Sunday, some minor changes are in store as a low
over southern California begins to have some impacts into our
region. As this low slowly drifts east, it amplifies an upper level
ridge to our east over the Central Plains and increases southerly
flow into our neck of the woods. Energy aloft will ride up into our
CWA along with moisture, this coupled with GFS Omega fields
indicating upward motion in the atmosphere, will work together to
increase chances of precipitation and isolated thunderstorms,
primarily over our western zones Sunday afternoon. The set-up on
Monday is somewhat similar with the threat generally over the same
area during the afternoon hours. Precipitation chances decrease
thereafter for the remainder of the long term with no substantial
impacts into our CWA. Temperatures next week will be relatively
pleasant as 700MB temps remain in the 7 to 11C range. This
translates to the mid 60s to lowers 70s at the surface for areas
west of I-25 and the mid 70s to mid 80s east of the corridor, with
the warmest temperature across the Nebraska Panhandle. Winds are not
of much concern with the strongest winds in the typical windier
areas and across the higher terrain, gusts should top out to near 30
mph.
&&
.AVIATION /18Z TAFS THROUGH 18Z SATURDAY/...
Issued at 1122 AM MDT Fri Sep 26 2025
An upper level disturbance will slide east across our CWA today, this
will bring back high-level clouds, around 20K feet, and stronger
winds. In general, expect surface winds to gust up to 25 knots,
locally higher, and then decrease this afternoon sometime after 00Z
for all terminals. High-level clouds are expected to stick around
through this TAF period.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&
$$
SHORT TERM...AM
LONG TERM...RZ
AVIATION...RZ

NWS CYS Office Area Forecast Discussion