890
FXUS65 KVEF 300817
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
117 AM PDT Sat Aug 30 2025

.KEY MESSAGES...

* Dry conditions and near to above normal temperatures through the
  weekend.

* Monsoonal moisture is expected to make a return during the middle
  to end of next week leading to isolated to scattered showers and
  thunderstorms.

&&

.DISCUSSION...Through Next Friday

High pressure will build over the region this weekend leading to
warming temperatures and overall dry conditions. The models are
still indicating some lower to mid level moisture and some low end
CAPE values over the southern portions of the CWA today and Sunday.
With daytime heating we will see a few clouds develop mainly over
the higher terrain, but with significant drying and warming above
500mb it is likely that any CU development will be weak and stunted.
Therefore, no precipitation is in the forecast through the weekend.
With the high building over the region, temperatures will start to
climb with Las Vegas seeing about a 75% chance of reaching 100F
today and a near 100% chance on Sunday and Monday. Temperatures
should peak Monday as an area of low pressure off the central
California coast shoves the high eastward. Not only will this bring
some lowering heights, but it will also start to open the door for
monsoonal moisture to return by Tuesday. A more favorable pattern
will develop Wednesday through the end of the week with thunderstorm
chances increasing over the southern half of the CWA. PWATs will be
running about 130 to 170 percent of normal for early September. With
the moisture return, temperatures will also fall back closer to
normal and potentially slightly below normal.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...Winds
will remain light, 10 knots or less, and will follow typical
diurnal directional trends with periods of light and variable
winds as they transition. VFR conditions will persist with few
mid-level clouds developing over the higher terrain surrounding
the Las Vegas Valley tomorrow afternoon. Temperatures will top our
around 100 degrees tomorrow with temperatures approaching 100
degrees between 22 to 02Z.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Winds should follow
typical daily patterns with speeds of 12 knots or less through the
TAF period. Smoke from the Garnet wildfire burning on the west
side of the Sierra will continue to filter into the Owens Valley;
slantwise visibility reductions are expected with lower confidence
as to whether or not surface visibility will be impacted.

&&

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

&&

$$

DISCUSSION...Gorelow
AVIATION...Stessman

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