Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 230244
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
644 PM PST Wed Nov 22 2017

.SYNOPSIS...
Record-breaking max temperatures and light winds will continue into
the weekend as high pressure remains in control. The next weather
pattern change will come early next week as a strong storm system
pushes across the region bringing elevated winds, cooler
temperatures, and chances for rain and snow to the southern
Sierra.
&&

.UPDATE...As expected, record high temperatures were posted a
several locations today. Some additional cloud cover is beginning to
move into California at this hour. These clouds will fill in across
the region through Thanksgiving Day, likely bringing highs down a
degree or two. The only item of concern this evening is the forecast
highs for Death Valley and other very low elevation valleys in Inyo
County where temperatures failed to climb as high as forecast. This
is likely due to a very strong inversion in those areas. We will be
taking a closer look at that tonight and adjusting the forecast as
necessary. The forecast for tonight is in good shape and no updates
are planned. -Wolcott-
&&

.SHORT TERM...Today through Saturday.

High pressure will remain in control through the end of the week
leaving quiet, warm weather for the region for the Thanksgiving
holiday through Saturday. The ridge will weaken slightly on Friday
as a shortwave passes well to the north which will give little
relief from the record breaking max temps each day. The next storm
system will begin to approach the West Coast on Saturday,
increasing southwesterly flow over the area. Breezy, southerly
winds will be possible over the southern Great Basin as a result
Saturday afternoon.

&&

.LONG TERM...Sunday through Tuesday.

High pressure will begin to break down late in the weekend with
ridging moving to the central part of the country in response to a
vigorous Pacific shortwave approaching from the west. Depending on
the model, we should see affects from this system as early as Sunday
night with a strong cold front pushing through the area Monday into
Tuesday. Some shower activity is possible in the Sierra and White
Mountains near Bishop and potential in Lincoln County as well Sunday
night and Monday. Winds will be the main issue however, with gusty
south to southwest winds Sunday night followed by strong north winds
Monday behind the front. There is plenty of time to watch how this
pattern begins to unfold and whether a ramp up weather support will
be needed. The cold front will also usher in cooler temperatures
that should be closer to normal on Tuesday. Dropped temps a notch on
Tuesday in response.

&&

.CLIMATE...Temperatures will be in record territory over the next
couple of days threatening records that have stood strong for
decades in many instances. Below is a table featuring a few
locations around the region and their current records and year set.

               THU 11/23  FRI 11/24  SAT 11/25
Las Vegas, NV  76 (1995)  81 (1949)  76 (1970)
Bishop, CA     78 (1959)  80 (1949)  78 (1954)
Barstow, CA    82 (1949)  85 (1949)  81 (1959)
Needles, CA    82 (1995)  84 (1949)  83 (1949)
Kingman, AZ    82 (1915)  84 (1921)  83 (1921)

&&

.AVIATION...For McCarran...Mostly clear skies this evening with
light and variable winds expected. Scattered high clouds will move
in tonight and Thursday but winds will remain calm through the
period.

For the rest of southern Nevada, northwest Arizona and southeast
California...Light and variable winds with mostly clear skies
expected across the region this evening with some breezy north winds
persisting near KIFP. Light winds expected area wide Thursday with
scattered high clouds expected.

&&

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

&&

$$

SHORT TERM...Guillet
LONG TERM....Salmen
AVIATION...Outler


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