Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 281737
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
1039 AM PDT Wed Oct 28 2020

.SYNOPSIS...The next week will be characterized by lighter winds,
clear skies, and a steady increase in temperatures through Saturday
where temperatures will hover 4-8 degrees above seasonal averages
through the remainder of the forecast period.
&&

.UPDATE...
Morning satellite imagery is clearly showing the closed low which
brought all of our weather changes over the last couple of days
spinning onto the the TX panhandle today. A weak shortwave will
settle over the area on the backside of this system and remain in
our vicinity over the next couple of days. A few lingering effects
today are northerly gusts in the normally wind prone spots up to
around 20 mph. Otherwise, most areas will see lighter winds, near
normal temperatures, and clear skies.

&&

.DISCUSSION...Today through Tuesday.

The strong weather system that propelled the Desert Southwest into
Fall has closed off and will continue to push eastward out of our
region today. As a result, upper level gradients will loosen,
allowing wind speeds to calm. Before getting into the semantics of
the forecast, the general trend through the remainder of the week,
through the weekend, and even through Election Day will be light
winds and at-or-above seasonally average temperatures. Though clear
skies are expected, this is in reference to cloud cover. The light
winds may allow lingering smoke from ongoing area wildfires to
funnel back into the region, particularly in the Owens Valley.

Looking at the ECMWF, GFS and Canadian Ensemble Means regarding the
overall synoptic set up through this forecast period, the three seem
to be in very good agreement... A weak shortwave will meander over
the region into the weekend, effectively preventing the offshore
ridge of high pressure from moving inland. Next week, this trough is
queued to dig slightly and ultimately close off just off the SoCal
coast before pushing northeastward through our forecast area. At
this time, no impacts are expected as the ridge axis ultimately
moves inland by the end of next week.
&&


.AVIATION...For McCarran...Light winds favoring diurnal trends are
expected today under clear skies. No weather related operational
impacts expected.

For the rest of southern Nevada, northwest Arizona and southeast
California...Light winds favoring northerly directions are expected
today for most of the regional TAF sites, with speeds generally
below 10 knots. Exception will be along the Colorado River Valley
near KEED and KIFP where 10-15 knot speeds can be expected through
mid-afternoon before decreasing in the evening. Clear skies are
expected through the period.
&&


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

$$

DISCUSSION...Varian
AVIATION...Outler

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