093
FXUS65 KVEF 290539
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1039 PM PDT Sat Jun 28 2025

.KEY MESSAGES...

* Temperatures will continue to gradually increase each day
  through Monday. Low confidence in temperatures beyond Monday.

* Moisture will slowly push into the region next week, resulting in
  increased chances for isolated afternoon showers and
  thunderstorms, mainly in Mohave County.

&&

.DISCUSSION...through next Saturday.

The gradual warming trend of the past few days will continue into
early next week as high pressure continues to build over the region.
Temperatures across the region will peak on Monday and Tuesday with
afternoon highs around 3 to 7 degrees above normal. Even with these
hotter than normal temperatures, HeatRisk largely remains Moderate
(Level 2 of 4) with a few pockets of High HeatRisk (Level 3 of 4) in
the Colorado River Valley and lower elevations of southern Mohave
County. Due to the brief duration and limited spatial coverage of
Major HeatRisk, no Extreme Heat Products have been issued at this
time. Temperatures will decrease Tuesday onward as a low pressure
system begins to push inland into California.

With high pressure shifting over the Four-Corners Region and a low
pressure system pushing into California, the eastern portions of our
forecast area will find themselves under southeasterly-to-southerly
flow aloft. This will help the first round of monsoonal moisture
push into our forecast area from the east. Right now, the most
anomalous moisture looks limited to Mohave County, where there will
be a slight chance of afternoon showers and thunderstorms beginning
as early as Tuesday. Moisture transport into the western portions of
our forecast area will be limited by drier south-southwesterly flow
aloft. Clark County, Lincoln County, and the Mojave Preserve will
find themselves sandwiched between the drier southwesterly flow and
southeasterly monsoonal flow. This means that increased cloud cover
may be the only evidence of monsoonal moisture trying to creep into
the area as precipitation chances in the higher terrain of these
areas are limited to around 10 to 15% at this time.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...Winds
will follow a typical daily pattern, southwesterly winds overnight,
variable winds tomorrow morning, then south southeasterly winds in
the afternoon. Occasional weak gusts cannot be ruled out in the
afternoon and early evening. Otherwise, speeds should remain less
than 10 knots throughout the forecast period. Temperatures will
exceed 100F between 19Z and 04Z.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Winds will mostly follow
usual daily patterns across the region through tomorrow. Winds
remain under 10 knots through the night and tomorrow morning. Gusty
southerly to southwesterly winds develop in the Owens Valley,
Colorado River Valley, and western Mojave Desert in the afternoon
and evening. Skies will be mostly clear. Periods of haze/smoke from
distant wildfires will be seen at times, primarily along and
south/east of the I-15 corridor.

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Meltzer

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