829
FXUS65 KVEF 131155
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
455 AM PDT Wed May 13 2026

.KEY MESSAGES...

* A shortwave passage brings breezy winds and cooler temperatures
  today, though temperatures will remain above normal through
  Saturday.

* More substantial winds and cooler temperatures are possible by
  the weekend as a trough moves into the northern Great Basin.

&&

.DISCUSSION...through next Tuesday.

High pressure over the region will shift east as a quick moving
shortwave, currently located off the Pacific Coast, moves across the
western United States. Breezy westerly to southwesterly winds will
pick up across the forecast area in response. The strongest of these
winds should occur in the western Mojave Desert this evening with
peak gusts between 35 and 40 mph. Given the borderline nature of
these winds, a wind headline for today does not appear necessary.
Today`s high temperatures will decrease 5 to 10 degrees compared to
yesterday`s highs. Despite this cooling, temperatures still remain
several degrees above normal today and tomorrow, increasing a few
more degrees on Friday.

A stronger shortwave will push into the Great Basin this weekend
before a broader trough drops into the Intermountain West early next
week. Winds at 850 mb between 45 and 50 knots will support a band of
gusty southwesterly winds between San Bernardino, Clark, and Mohave
Counties on Saturday. Will continue to watch trends in these areas
to determine the necessity of a wind headline. Temperatures will
fall as heights decrease aloft and northerly winds bring cold air
advection. Highs bottom out on Monday with highs a few degrees below
average for mid-May. For Las Vegas, this means highs in the mid 80s.
Temperatures start to increase again on Tuesday as a ridging pattern
returns.

&&

.AVIATION...For Harry Reid...For the 12Z Forecast Package...Light
winds will settle out of the south later this morning, with some
variability between 160-200 true until mid to late morning, when a
more pronounced southwesterly shift to 210-230 true is expected.
Winds will increase to 12-15KT, with gusts to 20-25KT expected
thereafter through sunset. Winds then diminish quickly through the
evening, becoming light and variable prior to daybreak Thursday
morning. VFR conditions will continue with decreasing high clouds
through the day.


For the rest of southern Nevada, northwest Arizona and southeast
California...For the 12Z Forecast Package...Winds around 5-10kt
this morning will shift to the south and southwest across most of
the region by mid to late morning, increasing to 10-15KT with
gusts to around 25KT expected. These winds will then continue
through sunset before diminishing through the evening. Exceptions
to this include the northern Owens Valley, including KBIH, where
northwesterly winds back to the west-northwest this afternoon,
becoming gusty through early evening before shifting back to the
north, and the western Mojave Desert including KDAG, where gusty
west winds are expected for the duration, with gusts to 30KT this
morning onward. VFR conditions prevail areawide with passing bands
of clouds at or above 12kft.


&&

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

&&

$$

DISCUSSION...Meltzer
AVIATION...Phillipson

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