498
FXUS65 KVEF 102011
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
112 PM 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...This afternoon through the middle of next week.

Broad ridging will remain over the forecast area into next week,
although the exact placement and intensity of the ridge will vary at
times. Through the weekend, long-range ensembles are in agreement
that the area of high pressure will remain centered over southern
California, maintaining slightly above-normal height anomalies
through Saturday.  This will result in temperatures remaining above
normal, along with keeping light winds and mainly clear skies. By
late in the weekend and early next week, model ensembles indicate
that the ridge will shift eastward, which is expected to increase
temperatures by a few degrees. Patchy areas of Major HeatRisk levels
return Sunday and Monday across the Mojave Desert, and to a lesser
extent in the Colorado River Valley.  Starting from Tuesday on,
heights begin to fall as an easterly wave moving into eastern Mexico
pushes the ridge to the west.  This wave may also introduce some
moisture in the area by the second half of the week, which would
also help to keep readings down. There is also a low chance for
precipitation on Wednesday across northwest Arizona, but confidence
is low on if and where rain may occur.

&&

 .AVIATION...For Harry Reid...For the 18Z Forecast
Package...Northwest winds with intermittent gusts to 15 knots will
continue into the early afternoon before becoming light and variable
after 20Z. The typical southwest-to-west winds will develop around
00Z, and occasional gusts to 20 knots can be expected through mid-
evening.  Light and variable winds return by daybreak, followed by a
more typical wind progression tomorrow, with northeast winds in the
late morning, southeast winds in the afternoon, and southwest winds
in the evening.  Speeds tomorrow are expected to remain 8 knots or
less, except for random gusts to 15 knots during the afternoon due
to intense heating.  VFR conditions will prevail through tomorrow at
the field.  Reduced slantwise visibilities are possible along the
Beatty corridor due to smoke from a wildfire burning on the Nevada
Security Site.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 18Z Forecast Package...Conditions at the Las
Vegas area terminals will be similar to those described for Harry
Reid, except winds at KHND will favor a more south-to-southwest
direction tomorrow.  Elsewhere, northerly winds of less than 10
knots are forecast for KBIH through tomorrow morning before turning
southerly tomorrow afternoon.  Gusty westerly winds will persist at
KDAG, with a typical decrease expected during the late morning and
afternoon hours.  In the Colorado River Valley, southerly winds with
occasional gusts to 25 knots are expected during the late afternoon
and early evening, followed by light winds overnight. VFR conditions
will prevail through tomorrow across the region. Reduced slantwise
visibilities are possible across portions of southern Nevada and far
eastern southern California due to smoke from a wildfire burning on
the Nevada Security Site. &&

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

&&

$$

DISCUSSION...Planz
AVIATION...Planz

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