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000
FXUS65 KVEF 310921
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
221 AM PDT Tue Mar 31 2020

.SYNOPSIS...Mild and dry conditions are expected through Wednesday
ahead of a cold front passage Thursday morning. Slightly cooler
temperatures are expected heading into the weekend ahead of a more
active pattern expected next week. &&

.SHORT TERM...through Wednesday.

Heights will continue to rise slightly today under a general zonal
flow aloft with light surface winds. Heights will begin to
decrease Wednesday as stronger troughing develops across the
Northwestern States, however, surface mixing should compensate for
the reduction in heights and still looks like were on track for
our first 80 degree day around Las Vegas, with 90 possible in
Death Valley. Winds Wednesday will be strongest across the Western
Mojave Desert as well as the Sierra and Owens Valley region, and
may justify a wind advisory or two in following shifts.

.LONG TERM...Thursday through Tuesday.

Shortwave trough over the Pacific Northwest will drag a weak cold
front through the region on Thursday, with a marked cooling
expected as well as some isolated showers across Lincoln County.
Temperatures will slowly rebound Friday into Saturday before a
more significant pattern change begins to take place. Details
remain fairly murky but confidence is increasing that a more
active weather pattern will develop across the West next week with
periods of cool and unsettled weather likely. For now, hard to
pin down any periods of especially widespread shower activity so
didnt make any major changes beyond the baseline NBM grids which
paint the greatest shower chances across the Sierra and Southern
Great Basin.

&&

.AVIATION...For McCarran...VFR conditions will prevail for the
period. Winds will follow diurnal trends and remain near 8 knots or
less. A few passing high clouds are expected to move in from the
south this afternoon into tonight. Southwest winds will pick up
Wednesday afternoon to 10-15 knots gusting 20-25 knots.

For the rest of southern Nevada, northwest Arizona and southeast
California...VFR conditions will prevail for the period. Light,
diurnal winds are expected at the terminals. Breezy, southwest winds
will begin this afternoon across the southern Great Basin before
spreading southward and increasing in speed on Wednesday. FEW-SCT
high clouds will push northward to the I-15 corridor throughout the
day.
&&

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

$$

DISCUSSION...Outler
AVIATION...Guillet

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