619
FXUS65 KVEF 082159
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
259 PM PDT Fri Aug 8 2025

.KEY MESSAGES...

* Hotter than normal temperatures and dry conditions will continue
  well into next week.

* Smoke from wildfires in southern California will continue to move
  through the area at times today and Saturday.

* Breezy conditions and near-critical fire danger will continue
  through Saturday.

&&

.DISCUSSION...through Thursday.

A large area of low pressure moving across the northern US will keep
southwest winds elevated across our area through Saturday. With
gusts 25-35 mph and afternoon RH values dipping into the single
digits or low teens, fire danger remains at elevated to near-
critical levels. Any fires that develop will have the potential to
spread rapidly. Outdoor burning and recreation with sparks are not
recommended. Smoke from ongoing fires to our southwest continues
to advect into our CWA, though the thickness/intensity of the
smoke is a bit uncertain and hinges on fire behavior this
afternoon. As the aforementioned low pulls away on Sunday, winds
weaken and the flow pattern becomes more northwesterly due to
ridging along the West Coast. This should reduce fire danger and
redirect wildfire smoke to our south.

Meanwhile, the varying combination of 500mb heights and vertical
mixing via wind speeds will work to keep temperatures fairly steady
through Tuesday. Highs across the Mojave Desert are forecast to be
in the 100-115 range while the southern Great Basin ranges from 90-
105. Combined with warm overnight lows, these values yield
widespread moderate HeatRisk with isolated areas in the major
category. Forecast temperatures/Heatrisk are just shy of warning
criteria, but can obviously still be dangerous in a variety of
situations, particularly to those sensitive to heat. Temperatures
decrease towards the middle of next week as a system approaches the
PacNW, but fire danger is likely to increase.

&&

.AVIATION...For Harry Reid...For the 00Z Forecast
Package...Southwest winds continue with gusts generally 20-30 knots,
though a few gusts over 30 knots remain possible (30%) through
sunset. Winds gradually wane tonight and tomorrow morning, but
quickly resume Saturday afternoon. Periods of lofted smoke/haze are
possible throughout the TAF period, but the extent of this is
dependent on fire behavior this evening. Significant reductions in
surface visibility (below 6SM) are unlikely. Temperatures remain
above 100F until 04z, exceeding this threshold again around 18z
Saturday.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 00Z Forecast Package...Southerly to westerly
winds continue today with gusts generally 20-30 knots. Lighter
breezes expected in the northern Owens Valley and southwestern Great
Basin areas. Winds weaken after sunset and through the night, but
breezy conditions resume tomorrow. Periods of lofted smoke/haze are
possible throughout the TAF period, but the extent of this is
dependent on fire behavior this evening. Significant reductions in
surface visibility (below 6SM) are unlikely. Otherwise, mostly clear
skies.

&&

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

&&

$$

DISCUSSION/AVIATION...Woods


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