767
FXUS65 KVEF 300534
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1034 PM PDT Mon Sep 29 2025

.KEY MESSAGES...

* A series of disturbances will roll through the Western US this
  week, bringing isolated showers to the Great Basin and breezy, dry
  conditions elsewhere in the region.

&&

.DISCUSSION...Today through Sunday.

Late morning satellite imagery shows building cumulus clouds along
the ridges of the southern Great Basin and southern Sierra. A
shortwave trough approaching the central California Coast will
support a few showers and isolated thunderstorms (20 to 30 percent
chance) this afternoon and again tomorrow afternoon over the
mountains surrounding the far northern Owens Valley and across
Esmeralda and central Nye counties. Outside of these areas, no
precipitation is anticipated, though breezy south to southwest winds
of 15 to 25 mph can be expected. As this trough shifts east by mid-
week, upper-level southwesterly flow will set up, pushing any
remaining moisture out of the region. A second trough is forecast to
move into the western US late in the week. While details regarding
timing and intensity remain uncertain, breezy winds and cooler
temperatures are likely to accompany it. These cooler temperatures
should persist as long-term guidance shows this trough-y pattern
continuing through the weekend and into early next week.
&&


.AVIATION...For Harry Reid...For the 06Z Forecast Package...Winds
will be light and south-southwesterly through the overnight period
before gusty winds pick up with more of a westerly component Tuesday
late-morning. Gust speeds will range from 20 to 25 kts, with a
directional variability between 180 and 240 (true). FEW to SCT aoa
10 kft through the overnight, morning, and afternoon before skies
clear out after sunset.

For the rest of southern Nevada, northwestern Arizona and
southeastern California...For the 06Z Forecast Package...Generally
light southerly winds expected overnight, with the exception of
KDAG, with breezy west winds around 10 kts. South-southwesterly wind
gusts will pick up Tuesday late-morning through the afternoon, with
speeds between 20 and 25 kts at Las Vegas and Colorado River Valley
TAF sites. KBIH will experience an occasional gust from the south-
southeast, but will generally remain between 8 and 12 kts. KDAG will
gust from the west around 25 kts. Gust speeds and frequency subside
after sunset. FEW to SCT aoa 10 kft through the overnight, morning,
and afternoon before skies clear out after sunset.
&&


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

&&

$$

DISCUSSION...Planz
AVIATION...Soulat

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