136
FXUS65 KVEF 301106
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
406 AM PDT Mon Jun 30 2025

.KEY MESSAGES...

* Heat will peak today with a gradual moderating of temperatures
  for the remainder of the week.

* Increasing moisture will bring a slight chance for afternoon
  showers and thunderstorms to Mohave County beginning Tuesday,
  with coverage expanding Wednesday and Thursday.

&&

.DISCUSSION...through the end of the week.

Heat will peak across the region today with afternoon highs
climbing 3-7 degrees above normal, with a gradual cooling trend
Tuesday onward. The remainder of the week will feature decreasing
heights and increasing mid-level moisture, resulting temperatures
returning to near or even slightly below normal. While continued
warming is anticipated today, heights will actually begin to
decrease from their values Sunday, and majority of the added
warming is thanks to enhanced surface mixing and continued low
level warming. However, tonight`s guidance has shaved off a
degree or two of expected heat from the forecast, which makes
sense given the expectations outlined above. As such, moderate
heat risk is expected across most of the desert terrain, though
major heat risk is quite limited. Subtle cooling will begin on
Tuesday with more pronounced surface cooling midweek.

Meanwhile, still anticipating a push of low grade monsoonal
moisture into the region as early as Tuesday afternoon across
Northwest Arizona. Low levels will remain quite dry initially,
which will pose some risk for dry lightning strikes and very
strong surface wind gusts with the activity that forms. Moisture
will deepen Wednesday as continued mid-level moisture advection
creeps westward and interacts with an incoming low pressure system
over SoCal. This will result in increased storm coverage across
the eastern Mojave Desert and far southern Nevada Wednesday into
Thursday. As the SoCal low lifts inland, drier southwesterly flow
will push in by Friday with dry conditions resuming and breezy
southwesterly winds.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...South-
southwest breezes develop again this afternoon, with gusts largely
15-20 knots. Occasional gusts around 25 knots possible (40%). Mostly
clear skies with just a few mid-level clouds during the afternoon.
Temperatures to exceed 100F between 19z and 04z, with a peak around
107F.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Lights winds this
morning give way southerly/westerly breezes this afternoon and
evening. Gusts generally 15-25 knots, but a few gusts around 30
knots possible around KBIH and KDAG. Winds begin to subside
around/after sunset. Mostly clear skies with just a few mid-level
clouds around the Las Vegas and Owens valleys this afternoon.

&&

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

&&

$$

DISCUSSION...Outler
AVIATION...Woods

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