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376
FXUS65 KVEF 161008
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
308 AM PDT Tue Jul 16 2019

.SYNOPSIS...
Dry and breezy conditions can be expected for much of the
upcoming week. Temperatures will trend downward toward seasonal
normals by mid-week where they will remain through next weekend.

&&

.DISCUSSION...Today through Monday.

An extended period of dry, breezy weather is expected through the
end of the week under a prevailing southwesterly flow pattern. A
shortwave trough will swing across the Western U.S. today
resulting in widespread, southwesterly wind gusts of 30 to 40 mph
this afternoon and early evening. With very dry air in place and
fire fuels at critical levels, these winds could lead to rapid
fire growth if ignited and the Red Flag Warning remains in place
today for Lincoln, Mohave, and portions of Clark counties. Winds
of this magnitude will continue on Wednesday but become more
focused across Mohave County and far eastern Clark County where
the Red Flag Warning extension has been issued. Waves of 1 to 2
feet will also be a result of the enhanced winds on portions of
area lakes, creating nonideal boating conditions. Today will be
the last day of above normal temps for the area before height
falls allow temps to drop a few degrees to near normal values for
mid-July on Wednesday.

The second half of the week will be characterized by continued
breezy conditions, gusting in the 20 to 25 mph range each afternoon,
and near normal temperatures as a broad-scale trough remains
situated over the Great Basin through Saturday. The high will
begin to build back northward towards the Four Corners region late
this weekend into early next week leading to a potential shift to
a wetter weather pattern.

&&

.FIRE WEATHER...
A dry weather system will pass across the region today increasing
southwesterly winds across much of the area to 20 to 30 mph gusting
near 30 to 40 mph this afternoon and evening. Mohave County and
eastern Clark County will continue to see winds of this magnitude on
Wednesday with other areas seeing decreased winds gusting around 25
mph. Critical fire weather conditions are expected as a result for
portions of the area today and tomorrow with cured fuels in place
and afternoon RH values dropping below critical thresholds. The
Red Flag Warning remains in place for Lincoln, Mohave, and
portions of Clark counties today which will continue into tomorrow
for Clark and Mohave counties. The remainder of the week will
continue to see breezy, southwesterly winds, critical RH values,
and near normal temperatures.

&&

.AVIATION...For McCarran...South winds will increase and become more
southwesterly early this afternoon with gusts to 30 knots at times.
Speeds will diminish this evening and remain out of the south-
southwest overnight as clear conditions persist.

For the rest of southern Nevada, northwest Arizona and southeast
California...Light winds this morning will give way to widespread
gusty south-southwest winds developing across the Mojave Desert and
Southern Great Basin region early this afternoon with gusts
generally 25-30 knots at most TAF sites. The Owens Valley will see
localized gusty west winds 20-25 knots late this afternoon.  Wind
speeds will drop below 15 knots after sunset at all TAF sites except
KDAG where gusts around 28 knots will persist until about 08Z.
Skies will remain mostly clear today and tonight.

&&

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

$$

DISCUSSION/FIRE WEATHER...Guillet
AVIATION....Adair

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