498
FXUS65 KVEF 101152
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
452 AM PDT Thu Jul 10 2025

.KEY MESSAGES...

*  Hot and dry conditions will likely continue through the
   weekend and into early next week as ridging persists across the
   region.

&&

.DISCUSSION...Today through the Middle of Next Week.

Ridging will remain generally over the area through the forecast
period, though the exact placement and intensity of the ridge will
vary at times. Through the weekend, long range ensembles are in
decent agreement that the area of high pressure will remain
somewhere over southern California. Slightly above normal height
anomalies will remain over the region through Saturday which will
result in above normal temperatures, light winds, and mostly sunny
skies. Sunday through early Tuesday, ensembles show the ridge
building eastward which will raise temperatures a few degrees. This
should be the hottest time period with high temperatures 5-8 degrees
above normal and Major (level 3 to 4) HeatRisk possible in desert
valley locations in Southern California and Southern Nevada on
Monday and Tuesday. After Tuesday, heights fall slightly as the
ridge potentially interacts with an easterly wave. This wave will
knock back temperatures a few degrees but will likely remain above
normal. In addition, if this wave is able to push far enough
westward, increasing moisture is possible through southern Nevada
and western Arizona. There is a low chance for precipitation Tuesday
afternoon but low confidence if rain will occur and what impacts may
result.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...Light
southwesterly winds early this morning will shift to the
northwest, becoming elevated with at least intermittent gusts to
15-20KT through late morning. This afternoon, another round of
gusty southwesterly winds is expected, with gusts expected to
remain under 25KT through sunset when winds start to diminish. VFR
conditions with mainly clear skies will prevail, with temperatures
expected to be 100F or greater between 18Z-05Z, peaking at 109F
around 00Z.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Across the Las Vegas
Valley, trends follow KLAS with elevated northwesterly winds
expected to arrive by mid morning, continuing through early
afternoon, shifting to the southwest. Winds largely diminish and
settle out of diurnal patterns overnight. Elsewhere, winds will
be somewhat variable, with gusty westerly winds expected across
the Western Mojave for most of the period, while southerly to
southwesterly winds largely prevail through the Lower Colorado
River Valley. In the Owens Valley, light downvalley winds are
expected the next 24 hours. VFR conditions prevail.

&&

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

&&

$$

DISCUSSION...Nickerson
AVIATION...Phillipson

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