954
FXUS65 KVEF 270724
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1224 AM PDT Tue Oct 27 2026

.KEY MESSAGES...

* Dry and seasonable weather conditions through at least Thursday.

* Precipitation chances and cooler temperatures will return to the
  region later this week, continuing through the weekend.

&&

.DISCUSSION...through Monday.

Zonal flow maintains mostly quiet weather conditions and mild
temperatures for the next couple of days. A weak shortwave moving
along this pattern will prompt breezy southerly winds across much of
the area this afternoon, with peak gusts between 15 and 25 mph.
Temperatures will be within a few degrees of normal through
Thursday, which includes highs in the upper 70s for Las Vegas, the
low 80s in the Colorado River Valley, and the upper 60s to low 70s
in Owens Valley.

A pattern shift arrives later this week as a longwave trough
approaches the West Coast. The initial push of moisture will occur on
Thursday and Friday as Tropical Storm Vance travels up the Gulf of
California ahead of the trough and PWATS rise to upwards of 200
percent of normal. Precipitation chances on Thursday night into
Friday favor northwestern Arizona and southeastern Nevada with POPs
in the 20 to 60 percent range, particularly over high terrain.
However, more substantial moisture advection will take place on
Saturday and Sunday as the trough moves inland and draws subtropical
moisture into the region. There is still a good amount of
discrepancy between models regarding the trajectory of this
moisture, which will heavily influence precipitation amounts. If the
southwesterly flow solution plays out, the rain shadow will limit
precipitation totals across the Mojave Desert. However, moisture
will reach far further inland if the flow takes a more southerly
direction. The presence of an embedded shortwave also has the
potential to boost precipitation totals. Given these uncertainties,
please continue to monitor the forecast for updates over the next
few days.

&&

.AVIATION...For Harry Reid...For the 06Z Forecast Package...Expect
light winds overnight. Tuesday late-morning into the early-
afternoon, east-southeasterly winds will set up between 6 and 8 kts.
Winds will gradually veer as the day progresses, with south-
southeasterly winds mid-afternoon, then gusty south-southwesterly
winds late-afternoon. Gusts fall off after sunset. No operationally
significant cloud cover through the TAF period.

For the rest of southern Nevada, northwest Arizona and southeast
California...For the 06Z Forecast Package...Expect generally light
and diurnal winds with gusty southerly winds in the afternoon at Las
Vegas Valley and Colorado River Valley TAF sites. KBIH will see an
isolated gust from the south-southeast in the afternoon and KDAG
will gust from the west-southwest in the evening. No operationally
significant cloud cover through the TAF period.
&&

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

&&

$$

DISCUSSION...Meltzer
AVIATION...Soulat

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