Grasshopper Junction, Arizona Weather Forecast Discussion

085
FXUS65 KVEF 101007
AFDVEF
Area Forecast Discussion
National Weather Service Las Vegas NV
307 AM PDT Wed Sep 10 2025
.KEY MESSAGES...
* A low pressure system will bring gusty winds, cooler temperatures,
  and dry conditions to the Desert Southwest this week.
* Smoke from the Garnet Fire will continue to impact the Owens
  Valley and Esmeralda County during the overnight and morning
  hours for the next few days.
&&
.DISCUSSION...through Tuesday.
Our well-advertised Pacific system continues to slowly creep inland
over the next several days. Strongest winds arrive this afternoon,
particularly across northwest Arizona. Given how winds performed
yesterday, and the expectation of stronger gusts tomorrow, a Wind
Advisory has been issued for Mohave County with gusts up to 45 mph.
Additionally, a Lake Wind Advisory has been issued for Lakes Mead
and Mohave. Both advisories run from 10 AM to 7 PM. Winds are
forecast to weaken later this week as the low moves farther inland.
Beyond the winds, the other weather of note is the temperatures as
the cooling trend continues. By Thursday/Friday, highs are forecast
to be 8-12 degrees below normal, providing a nice taste of early
Fall. Precipitation-wise, much of the area remains dry, but there
are 10-30% chances of showers/storms in the Sierra and Esmeralda
County through Friday.
Speaking of our northwestern areas, wildfire smoke from the Garnet
Fire continues to settle into the Owens Valley and Esmeralda County.
Fortunately, it does not appear to be as dense as previous nights,
with Bishop Airport currently reporting 7 mile visibility (compared
to 3-4 miles this time yesterday). This seems to be due to reduced
fire activity, and will hopefully be a continuing trend. Wildfire
smoke will be possible each night until Friday when northwesterly
flow kicks in. Smoke density will be dictated by afternoon fire
behavior.
&&
.AVIATION...For Harry Reid...For the 12Z Forecast
Package...South to southwest winds will occur through most of the
day and be gusty at times. This morning, look for winds to be around
10-15kts with gusts 20-25kts which should last into this afternoon.
There is moderate confidence that we could see wind gusts between 25-
30kts at times between 22z-02z before winds start to diminish.
Uncertainty returns this evening if winds will diminish with gusts
ending or if west-southwest winds gust to 25KT will continue at
times overnight. VFR and dry conditions will prevail through the
period.
For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Some visibility
reduction due to smoke is expected through this morning in the Owens
Valley and there is moderate confidence that visibilities will drop
to 5SM or less. If it does, improving conditions are expected after
18Z when southeast winds return. There is a slight chance of
thunderstorms in the Sierra this afternoon, but impacts near KBIH
are not expected. Otherwise, VFR conditions expected across the
region. South to southwest winds return later this morning through
the afternoon with gusts 20-25KT across the region through 03z with
winds then decreasing to less than 10KT overnight. Gusts to around
25KT may persist in the Western Mojave Desert around KDAG late this
evening and overnight.
&&
.SPOTTER INFORMATION STATEMENT...Spotters are encouraged to report
any significant weather or impacts according to standard operating
procedures.
&&
$$
DISCUSSION...Woods
AVIATION...Gorelow
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NWS VEF Office Area Forecast Discussion