FXUS65 KVEF 080925
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
225 AM PDT Wed Jul 8 2026

.KEY MESSAGES...

* Dry conditions and warming temperatures will continue through the 
  end of the week.

* Monsoonal moisture begins increasing this weekend, resulting in
  increased chances for showers and thunderstorms early next week.

&&


.DISCUSSION...Today through Tuesday.

High pressure builds aloft and temperatures are on the rise through 
the rest of the week. Afternoon high temperatures will top out 
between 5 and 7 degrees above normal and Las Vegas has a 40 to 50 
percent chance of a high of at least 110 degrees each afternoon 
between Thursday and Saturday. Hot daytime temperatures combined 
with warm overnight low temperatures will result in widespread 
Moderate (Level 2 of 4) with pockets of Major (Level 3 of 4) Heat 
Risk for most locations. This level of heat will affect those who do 
not have access to sufficient cooling and hydration, as well as 
those who are especially vulnerable to heat related illnesses. The 
position of the high should maintain dry conditions and afternoon 
breezes, which prompt elevated fire weather conditions across much 
of the region today and tomorrow. 

A classic monsoon setup develops this weekend as high pressure 
becomes established over the Four Corners region and southerly flow 
advects moisture into the Desert Southwest. PWAT values of an inch 
or more cover areas along and southeast of Interstate 15 on Sunday, 
at which point the best precipitation chances will exist over high 
terrain in northwestern Arizona. Moisture increases and POPs spread 
north through the first half of next week, generally favoring high 
terrain where orographic lift favors thunderstorm formation. Finer 
details on timing and location of storms should become more apparent 
over the next few days. Other than storm potential, lowering heights 
aloft and the moisture influx should help lower temperatures by a 
few degrees. 
&&


.AVIATION...For Harry Reid...For the 06Z Forecast Package...Similar 
wind patterns to the past few days are expected through the upcoming 
TAF period. Light southwest winds tonight will become light and 
variable Wednesday morning. Winds around 18Z may vary 150 to 180 
(true) as speeds pick up to around 8KT. Isolated gusts over 15KT are 
possible with these south to southeast winds. By 21Z, the winds 
become southwest and gusts more frequent, gusting over 20KT through 
the afternoon. Winds will diminish like most evenings as southwest 
wind at 8KT or less develop for the evening and overnight period. 
VFR skies persist. Temperatures will exceed 100 degrees between 18Z 
through 04Z.

For the rest of southern Nevada, northwest Arizona and southeast 
California...For the 06Z Forecast Package..Other than at KDAG where 
west winds at 10-15KT will persist through the night, light winds 
under 10KT are expected across the region. On Wednesday, south to 
southwest winds will develop by the afternoon with speed around 10KT 
and gusts 15-25KT. Winds will diminish after sunset for much of the 
region, except KDAG where gusty west-southwest winds are expected to 
develop around 00Z. VFR skies expected through the period.
&&


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

&&

$$

DISCUSSION...Meltzer
AVIATION...Nickerson

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