118
FXUS65 KVEF 281727
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1026 AM PDT Sat Jun 28 2025

.KEY MESSAGES...

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

Temperatures will continue to trend slightly warmer each day as
high pressure builds across the region. Afternoon highs today will
top out a degree or two above normal, with temperatures trending
increasingly warm through early next week when they are expected
to peak. While temperatures will be above normal, heat risk remain
predominantly in the moderate category, with some patchy major
heat risk Monday and Tuesday mainly across Mohave County. Brief
duration of the heat episode and somewhat borderline temperatures
remain a limiting factor for an Extreme Heat headline, though we
will continue to monitor trends closely. By Tuesday onward,
temperatures will begin to trend cooler thanks to a weak trough
moving shore and an influx of monsoonal moisture into Northwest
Arizona.

Speaking of moisture, the Four Corners high will begin to orient
itself more favorably for monsoonal moisture to be wrapped into
the flow early next week, which will also be complimented by an
approaching low over Southern California that will further
enhance the southerly flow. Most of the moisture at this point
looks to favor mainly northwest Arizona, though some of the
eastern Mohave Desert could see some isolated activity as well.

&&

.AVIATION...For Harry Reid...For the 18Z Forecast Package...Light
and variable winds will continue through late morning before
becoming southeast by 20Z.  Through the afternoon, occasional
periods of winds above 10 knots are possible, but overall, they
should remain below this level.  A gradual turn to the south and
southwest is expected after 21Z, and once this turn occurs, expect
them to stay from this direction well into the night. Similar
conditions are expected tomorrow with light winds in the morning,
followed by moderate southeast to south winds developing in the
afternoon.  VFR conditions will prevail through tomorrow, although
periods of haze/smoke from distant wildfires will be seen at times.
Temperatures will exceed 100F between 20z and 04z, peaking around
105F late this afternoon.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 18Z Forecast Package...Winds will largely
follow typical, daily patterns across the region into Sunday. Much
of the region will see winds remaining below 10 knots, although a
few gusts to 20 knots are possible in the Owens Valley and across
the western Mojave Desert late this afternoon and evening.  VFR
conditions will prevail, with most areas seeing mainly clear skies.
The exception will be over the Sierra, where a few shallow cumulus
with bases around 12kft AGL are possible. 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...Outler
AVIATION...Planz

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