347
FXUS65 KVEF 240925
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
230 AM PDT Fri Jul 24 2026

.KEY MESSAGES...

* Dangerous temperatures will continue through Monday across the
  Mojave Desert.

* Monsoonal moisture remains in place over the region, but daily
  storm coverage will decrease as we head into the weekend.

&&

.DISCUSSION...through Thursday.

Temperatures will continue to increase across southern Nevada,
southeastern California, and northwestern Arizona as high pressure
continues to build over the region. This ridge will persist through
the weekend into next week, enabling hotter than normal temperatures
to continue into early next week. Afternoon high temperatures and
overnight low temperatures will continue to run around 5 to 10
degrees above normal for most of the area. In places like Las Vegas
and Death Valley, this means little-to-no overnight relief as low
temperatures will be 90+ and 100+ degrees, respectively. Widespread
Major HeatRisk (Level 3 of 4) with pockets of Extreme HeatRisk
(Level 4 of 4) in the Colorado River Valley, Amargosa Valley, and
Golden Valley areas will continue through the weekend and into next
week.

We will see a slight uptick in moisture today as upper-level flow
becomes more southeasterly, helping bring slightly higher PWats
to the area today. This slight increase in moisture will give us
the potential for slightly more convective coverage today. The
best chances for precipitation today (20 to 40%) will be in the
higher terrain of northwestern Arizona, southern Nevada, the
eastern Sierra and the Great Basin. Gusty outflow winds and flash
flooding will continue to be the greatest threats with any storms
that develop. Monsoonal moisture will linger into next week;
however, convective coverage will be limited to the higher terrain
in the eastern portions of our forecast area.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast
Package...Light winds favoring southerly directions will continue
through the early morning before becoming light and variable after
daybreak. Still anticipating the development of scattered
thunderstorms developing after 18z in and around the Vegas Valley.
Low confidence in direct impacts but any storms could produce
lightning, sudden outflow winds, brief rain, and CIGs below 10kft.
Outside of convective influences, winds will trend south-southeast
after 18Z with gusts up to 20KT. Winds and thunderstorms will
diminish late in the afternoon as light south to southwest set up
for Friday night into Saturday morning. Temperatures will exceed 100
degrees between 19Z to 05Z.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package... Light winds will
continue through the morning hours, increasing out of the south to
southeast with gusts 15-20KT in the afternoon. KDAG will be light
through the afternoon before westerly gusts develop around 00Z.
Scattered thunderstorms will develop this afternoon across southern
Nevada and western Arizona, as well as along the Sierra crest.
Storms may produce sudden gusty outflow winds, brief rain, reduced
visibility, and CIGs below 10kft. Precipitation will diminish after
sunset along with winds as a quiet night with typical light wind
patterns set up for Friday night.

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Nickerson/Outler

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