Area Forecast Discussion
Issued by NWS Las Vegas, NV

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342
FXUS65 KVEF 300928
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
228 AM PDT Tue May 30 2017

.SYNOPSIS...Hot and dry conditions will persist through today
with breezy afternoon winds through Thursday. Partly cloudy with
slightly cooler air mid week, then hot and dry conditions
redevelop for the weekend. &&

.SHORT TERM...Today through Thursday.

Models have continued to be in good agreement on synoptic systems
over the short term. The high pressure that was in place over the
holiday weekend will begin to slide eastward today. An upper trough
off the Pacific NW is expected to dig further south this afternoon
bringing increased cloud cover, and some slight chances of showers
and thunderstorms over the Sierra and northern Mohave County
during the afternoons.


Models have been in relatively good agreement on placing mountain
enhanced shower and thunderstorms Tue and Wed afternoon over the
Sierra`s. Though, more likely chances for rain along the eastern
Sierra will be Wed afternoon. Included slight chances of
thunderstorms to northeastern corner of Mohave County as latest
model runs have been hinting that development of scattered
showers and thunderstorms are possible Wednesday afternoon.
Elsewhere, dry conditions are expected, but breezy south to
southwest conditions with gusts around 20-25 mph exist for Tuesday
and Thursday with gusts up to 30 mph Wednesday afternoon. Cool
air advection associated with the troughing influence on Tue will
allow for temperatures to decrease 5-8 degrees by Thur afternoon.
Partly cloudy to mostly cloudy skies will accompany the low
pressure system as it moves through the region Wednesday. Partly
cloudy to mostly clear skies return for Thursday.

.LONG TERM...Friday through Monday. There is still some model
consensus on ridging Friday and Saturday, then some flavor of
troughing Sunday and/or Monday. Still lots of spread regarding the
details for Sunday and Monday, but it appears that there is very
little chance of impactful sensible weather other than perhaps
some gusty winds. As noted by earlier shifts, temperatures should
remain a few degrees above normal through the period, with any
precip chances limited to the higher terrain of the Sierra and
south central Great Basin. Overall, expect warm and quiet weather
for much of the first week of June.

&&

.AVIATION...For McCarran...Light and variable winds will follow
typical trends through the morning before breezy south winds kick
in this afternoon. Southeast to southwest winds will dominate
most of today before diurnal wind pattern kicks in again around
11-12Z tomorrow. Patches of SCT to FEW250 expected through today.

For the rest of southern Nevada, northwest Arizona and southeast
California...Light diurnal wind patterns will persist for most
terminals until breezy south to southwest winds develop this
afternoon. Peak wind gusts up to 20-25 kts are possible around 23-
01Z today. Patches of high clouds are expected today.
&&

.FIRE WEATHER....Continued hot and dry conditions, low afternoon relative
humidities falling at or below 10 percent combined with breezy winds
will result in enhanced fire danger today through Thursday
afternoon. &&

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

$$

Short Term/Aviation/Fire...Kryston
Long Term...Morgan

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