Area Forecast Discussion
Issued by NWS Las Vegas, NV

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000
FXUS65 KVEF 280224
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
723 PM PDT Sat May 27 2017

.SYNOPSIS...Plenty of sunshine and generally dry
conditions through the Memorial Day weekend. A shower or
thunderstorm cannot be ruled out over the eastern Sierra each
afternoon. Expect temperatures to be gradually climb the next few
days to levels that are about 6 to 8 degrees above normal by
Tuesday.
&&

.UPDATE...Looking at radar, satellite, webcam and model trends, I
believe any chance of showers/thunderstorms over the Sierra and
northeast Mohave County has ended. I updated to remove those for
this evening. I updated a bit earlier to increase cloud cover for
the evening over mainly some mountain areas of Clark, Lincoln and
Nye County where cumulus clouds kept generating. Those clouds are
still expected to dissipate later this evening and overnight. No
other updated anticipated this evening. -Harrison-
&&

.PREV DISCUSSION...
219 PM PDT Sat May 27 2017

.DISCUSSION...Tonight through Saturday.

A weak trough of low pressure is currently stretching from southern
Utah across southern Nevada and into Inyo County. The trough has
acted to provide some cooling to the area as well as some increase
in clouds mainly over the higher terrain of Clark and Mohave
Counties this afternoon. There is a slight chance of a shower or
thunderstorm in northeast Mohave County and over the eastern Sierra
west of Bishop. Additionally, there is a deformation zone that will
be in place in the vicinity if the eastern Sierra the next couple of
days which will continue to provide the slight chance of a shower or
thunderstorm. Otherwise, mostly sunny and dry across the area for
the holiday weekend underneath an area of high pressure.
Temperatures that are near their seasonal normals today will be
followed up by some gradual warming through Tuesday bringing
temperatures back to triple digits in Las Vegas and will average
around 6 to 8 degrees above normal across the area.

A weak area of low pressure will work its way down the California
coast Monday night into Tuesday, reaching the Baja of California by
Tuesday evening. All in all the low should have no impact on the
area. By Wednesday afternoon, the next trough will move onshore and
provide an increase in southwest winds, an increase in cloud cover
over the northern half of Inyo County, Esmeralda and central Nye
Counties. The trough will provide a few degrees of cooling to the
area and also provide a chance of showers and thunderstorms over
northern Inyo and Esmeralda Counties on Wednesday afternoon and
evening. Exactly how the low tracks and evolves has been a struggle
for the models and if the low trends stronger and deeper, enhanced
clouds and scattered showers will be possible further south across
the deserts on Thursday. By Friday and Saturday the next ridge of
high pressure will build into the area providing generally sunny
and dry conditions.
&&

.AVIATION...For McCarran...Light and variable winds this evening,
likely favoring a westerly direction, becoming northeast in the
morning, with northeast winds lasting much of the day on Sunday. No
other operationally significant weather expected through the period
at this time.

For the rest of southern Nevada, northwest Arizona and southeast
California...Diurnally driven winds generally 10 knots or less are
favored for today. Dry and clear conditions are expected through the
period.
&&

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

$$

DISCUSSION...Czyzyk
AVIATION.....Steele

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