270
FXUS65 KVEF 261938
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1238 PM PDT Thu Jun 26 2025

.KEY MESSAGES...

* Temperatures will continue to gradually increase with warmer
  than normal temperatures returning as we head into the weekend
  and sticking around into early next week.

* Moisture will slowly return to the region next week, resulting
  in increasing thunderstorm chances for portions of the area.

&&

.DISCUSSION...through next Thursday.

Weather over the next few days will remain relatively benign as a
ridge of high pressure slowly nudges into the region. These slowly
increasing 500 mb heights will allow for our gradual warming trend
to continue through early next week. Warmer than normal temperatures
will return to southern Nevada, northwestern Arizona, and
southeastern California as we head into the weekend, resulting in
widespread Moderate (Level 2 of 4) HeatRisk. Moderate HeatRisk means
that this level of heat will impact heat sensitive individuals,
individuals that have not acclimated to the heat, and those without
access to effective cooling and/or adequate hydration. Temperatures
across the region will peak on Monday, with a few patches of Major
(Level 3 of 4) HeatRisk popping up in the Colorado River Valley,
Golden Valley, and the lower elevations of the Big Sandy Wash.

While the ridge of high pressure slowly pushes into the area, a
trough will develop off the coast of California over the weekend.
This set up will result in southerly flow across the region next
week, which will result in increasing moisture across Mohave County
that will then spill into southeastern California and southern
Nevada. Confidence regarding next week`s increase in moisture is
high, however the exact details regarding locations of individual
storms and precipitation amounts remain blurry due to interensemble
variability. Precipitation totals will be dependent on how much we
see moisture increase, which will be dependent on the orientation of
the trough relative to the ridge as it pushes into the area. With so
many moving parts, make sure to stay tuned to the forecast as it
continues to evolve.

&&

.AVIATION...For Harry Reid...For the 18Z Forecast Package...Winds
will remain light following typical diurnal directional patterns
through the morning hours. South-southeasterly breezes will pick up
in the afternoon with sustained speeds around 10 knots and wind
gusts around 15 to 20 knots. Wind direction will fluctuate between
130 and 180 degrees during the afternoon. By sunset, winds should
return to their typical south-southwest direction. Clear skies with
temperatures exceeding 100F between 21z and 02z, peaking around
102F.

For the rest of southern Nevada, northwest Arizona and
southeast California...For the 18Z Forecast Package...South-
southeast breezes will pick up across much of the area this
afternoon, with gusts up to 20 knots. The exception to this is the
western Mojave Desert where winds will remain relatively light,
following typical diurnal directional trends through the afternoon.
Winds will pick up and flip back to the west-southwest around
sunset with wind gusts around 25 knots continuing into the evening
hours. VFR conditions under mostly clear skies across the region,
with just a few mid-level and high clouds over the southern Great
Basin.

&&

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

&&

$$

DISCUSSION/AVIATION...Stessman


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