990
FXUS65 KVEF 300538
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1037 PM PDT Sun Jun 29 2025

.KEY MESSAGES...

* Temperatures will peak on Monday and Tuesday as the gradual
  warming trend continues into next week.

* Increasing moisture will bring a slight chance for afternoon
  showers and thunderstorms to Mohave County beginning Tuesday.

&&

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

Temperatures will continue to warm a few degrees each day as we head
into next week, peaking around 3 to 7 degrees above normal on Monday
and Tuesday. The Colorado River Valley and portions of southern
Mohave County will see HeatRisk increase to Major (Level 3 of 4),
with Moderate HeatRisk (Level 2 of 4) across the rest of the area.
Due to the isolated and short lived nature of the Major HeatRisk,
we will not be issuing any Extreme Heat Headlines. Beyond Tuesday
temperatures will gradually decrease as low pressure pushes into
southeastern California, southern Nevada, and northwestern
Arizona. By mid-week temperatures will have cooled back down to
near normal with slightly below normal temperatures possible late
in the week.

Moisture will begin to creep up the Colorado River Valley tomorrow
as we find ourselves sandwiched between the Four Corners High to the
east and a low pressure system to our west. This will result in
southeasterly flow aloft across the eastern portion of our forecast
area, allowing for moisture advection into the Colorado River
Valley, northwestern Arizona, and the far eastern Mojave Desert.
Beginning on Tuesday, Mohave County will see slight chances for
showers and thunderstorms each afternoon through at least Thursday.
The higher terrain of Clark and Lincoln counties will have a lesser,
but not zero, chance of seeing afternoon showers and thunderstorms
develop beginning around mid-week. The primary threats will be dry
lightning potential on Monday and Tuesday, followed by more typical
summer like downpours and gusty winds midweek onward.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast
Package...southwesterly wind at or below 8kt will become light and
variable by 15Z and last through the morning until gusty
south to southwesterly winds return during the afternoon hours.
Gusts to 20kt are forecast. Winds will become light from the
southwest after sunset. Temperatures will be over 100 degrees
between 19Z and 04Z on Monday. Skies will be mostly clear
through the TAF period.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Mainly light wind
and clear skies through the morning hours at most TAF sites.
KDAG will remain westerly at around 10kt. Gusty southerly
to southwesterly winds increase Monday afternoon across
most of the forecast area. Isolated convection is possible along
high terrain in Mohave County in the afternoon, but otherwise skies
will be mostly clear.

&&

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

&&

$$

DISCUSSION...Stessman
AVIATION...Berc

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