Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 282128
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
228 PM PDT Fri Apr 28 2017

.SYNOPSIS...Cool and windy conditions can be expected through
Saturday across most of the area. Winds will decrease a bit
Sunday with improving conditions and warming temperatures for the
week ahead
&&

SHORT TERM...Tonight through Saturday Night...

Strong and gusty northerly wind will continue through the night into
Saturday. Gusts to 45 mph have been recorded thus far in the
Colorado River Valley.  Widespread sub-advisory level winds have
been noted elsewhere.  Expect this to continue through Saturday. The
culprit causing all of this wind is a strong low pressure system,
currently located over Utah and will be moving southward through the
four corners region tonight.  As this system moves off to the east
later Saturday, the pressure gradient will relax, bringing lighter
winds late Saturday night.  Temperatures will remain about 10
degrees below normal on Saturday.


.LONG TERM...Sunday through Friday.

Winds will relax on Sunday as
dry northwest flow takes over through Tuesday, followed by strong
ridging Wednesday through Friday. Temperatures will rise to near
normal on Sunday followed by well above normal beginning on Monday
and accelerating into late week. MOS guidance numbers have continued
to trend upward from run to run, so nudged up the forecast temps
again on this shift. KLAS has reached 90F twice this calendar year
but has not yet exceeded it. Exceeding it for the first time is a
slam dunk next week.
&&

.FIRE WEATHER...Cool and dry, but very windy conditions are expected
through Saturday across the forecast area.  A Red Flag Warning
remains in place for the Colorado River zones through this period.
While dry conditions will persist beyond Saturday, wind will be
reduced to below Red Flag levels.&&

.AVIATION...For McCarran...Strong and gusty northerly wind will
continue through the night into Saturday. Gusts over 30kt will be
common.  There will be a relative lull overnight tonight when gusts
will be closer to 20kt. Wind will increase again after 15Z Saturday
and last into the evening.  No operationally significant clouds are
expected.

For the rest of southern Nevada...Northwest Arizona...and Southeast
California...Gust northerly wind will continue at all terminals
through Saturday.  There will be a period overnight and early
Saturday when wind will be a bit lighter, but still gusting to
around 20kt at most terminals.  No operationally significant clouds
are expected.
&&

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

$$

Short Term/Aviation/Fire Weather...Berc
Long Term..........................Morgan

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