Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 251005
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
205 AM PST Sat Feb 25 2017

.SYNOPSIS...A fast moving disturbance will dive across southern
Nevada late today and early Sunday followed by a broad low pressure
system Monday and Tuesday. This will make for breezy periods and the
potential for a few brief mountain showers. Temperatures will be
cool through Tuesday...followed by a warming trend commencing the
middle of next week.

&&

.SHORT TERM...through Monday night.

Mostly clear skies dominate the region early this morning with
another cool morning in store as temperatures across the deserts are
already in the 30s and lower 40s, with teens and twenties in the
higher elevations.  More cool weather is on the way with the next
reinforcing shot dropping down off the coast of Oregon at this hour
and will continue to sink south off the coast of California before
kicking inland and across our region tonight. Unfortunately for
precipitation loves, majority of the precip will remain blocked by
the Sierra and southern California mountains, and most areas won`t
be seeing much more than increasing mid and high clouds Saturday
afternoon through Sunday morning. A few sprinkles or light showers
can`t be completely ruled out across the far western Mojave desert
near Barstow and Twentynine Palms late Saturday night into Sunday
morning as rain intensifies across coastal southern California, but
chances are slight at best.

Clouds will decrease through the day sunday as that impulse shifts
east but cool and breezy conditions will persist before the next
broader trough begins to push in from the north Monday. Once again,
precipitation potential is quite limited thanks to the dry and
continental trajectory of the storm system, but there is some
indication of a plume of deeper subtropical moisture getting pulled
into central Arizona Monday into Tuesday morning.  While most of our
forecast area won`t benefit much from this, areas south of I-40 in
Northwest Arizona and southeast California will stand a little
better chance of seeing measurable precipitation as this plume moves
through.  Elsewhere, cool and breezy but generally dry conditions
are expected aside from a few light mountain snow showers.


.LONG TERM...Wednesday through Friday.

A dry northwest flow will hold over the region through Saturday
allowing temperatures to warm back above normal. A weak area of low
pressure forms south of the area late in the week but is forecast to
have little moisture and no precipitation is expected. &&

.AVIATION...For McCarran...Light and variable winds favoring diurnal
trends are expected through Saturday evening. Winds speeds will
remain generally at or below 9 knots. Increasing high clouds can be
expected during the afternoon and evening hours.

For the rest of southern Nevada...northwest Arizona...and southeast
California...Breezy conditions with wind speeds of 10-20 knots can
be expected along a belt from KDAG to KIGM which will linger through
Sunday morning. Elsewhere generally light winds are favored. A few
showers are possible Saturday evening from KBIH eastward across the
southern Great Basin, remaining north of KLAS. Outside the
aforementioned area, just periods of high clouds are forecast.

&&

.SPOTTER INFORMATION STATEMENT...Weather impacts are
expected to be low over the weekend and early next week, however
spotters are encouraged to report any significant weather or impacts
according to standard operating procedures.
&&

$$

Short Term/Aviation...Outler
Long Term...Salmen


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