594
FXUS65 KVEF 011723
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1023 AM PDT Sat Nov 1 2025

.KEY MESSAGES...

* Above-normal temperatures persist through the forecast period
  under mostly clear skies.

* Uncertainty continues regarding the strength of an incoming
  weather system mid to late week that is capable of bringing lower
  temperatures and gusty winds areawide, along with precipitation
  chances to the eastern Sierra.

&&

.DISCUSSION...Today through Friday.

High pressure over the southeastern Pacific and persistent ridging
over the Desert Southwest will maintain dry conditions, light
afternoon breezes, and warm temperatures through the weekend and
first half of next week. Temperatures remain be 5 to 10 degrees
above average for early November. This means afternoon highs in the
low 80s and morning lows in the upper 50s to low 60s for Las Vegas.

A trough will push through the western CONUS mid-to-late week.
Confidence in details remains low to moderate at this time as the
magnitude of impacts to the area will depend on the strength of this
trough. There is a 50 to 60 percent chance of westerly downslope
wind gusts pushing off the eastern Sierra slopes and across Highway
395 in the northern Owens Valley on Wednesday. Lower potential for
gusts over 40 mph exists elsewhere, including a 40 to 50 percent
chance of westerly gusts along high terrain in San Bernardino
County, a 40 to 50 percent chance of southerly gusts north of the
Spring Mountains, and a 10 to 30 percent chance of south-southwest
gusts across the southern Great Basin. Cool Pacific air will
correspond with a 4 to 6 degree temperature drop between Wednesday
and Thursday, bringing afternoon high temperatures close to seasonal
normals. Finally, while most of this sytem`s moisture will remain to
the north of the forecast area, precipitation potential remains over
the Sierra on Wednesday as moisture interacts with orographic lift
over the mountain range. There is a 30 percent chance of
precipitation over the Sierra Crest and a 10 to 20 percent chance of
precipitation making it over the Sierra and into the Owens Valley
and White Mountains.

&&

.AVIATION...For Harry Reid...For the 18Z Forecast Package...Light
winds will continue through the forecast period, remaining under
8KT and following typical diurnal directional patterns. VFR
conditions prevail.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 18Z Forecast Package...Winds will follow
typical diurnal directional patterns the next 24 hours, with
speeds remaining around 8KT or less. The exception will be
portions of the Lower Colorado River Valley including IFP, where
northerly winds will briefly increase to 10-12KT this afternoon.
VFR conditions prevail.

&&

.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.

&&

$$

DISCUSSION...Meltzer
AVIATION...Phillipson

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