Area Forecast Discussion
Issued by NWS Las Vegas, NV

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426
FXUS65 KVEF 241705
AFDVEF

Area Forecast Discussion
National Weather Service Las Vegas NV
905 AM PST Tue Jan 24 2017

.SYNOPSIS...Isolated snow showers are possible over the higher
terrain today. Dry, cool and locally breezy conditions are in store
for Wednesday and beyond.
&&

.UPDATE...Only concern this morning appears to be one small patch of
dense fog sitting over Pahrump. Visible satellite suggests that this
patch is very small in areal coverage, and as daytime heating
continues, it should erode away. Cold temperatures aloft should be
enough to support rising motion this afternoon, but moisture is very
limited, so showers will likely be limited to parts of Mohave County
and the higher mountains of Clark and Inyo Counties. This is covered
well in the previous forecast, so no update is planned this morning.
&&

.PREV DISCUSSION...
240 AM PST Tue Jan 24 2017

.SHORT TERM...Through Wednesday night

The main upper low energy has shifted east of the region with drier
air filtering in behind it. A cool cyclonic northwest flow will
persist over the area today with cold air aloft combining with some
lingering moisture to possibly generate isolated snow showers over
some mountain locations today, mainly in Mohave County and the
Sierra. We can`t totally rule out isolated snow showers in the
Spring Mountains and eastern Lincoln County however. Otherwise, we
are in for a cool day with high temperatures about 10 degrees below
normal along with some northwest winds making it feel even colder.
The air mass will continue to dry out and stabilize tonight through
Wednesday night under a northwest flow with very cool temperatures
persisting.

.LONG TERM...Thursday through Monday

Outside of a slight chance of a shower or two on the higher terrain
in the southern Great Basin Thursday into early Friday, the long
term is pretty dry. Wind will be the main concern with periods of
northerly breezy to gusty winds, especially down the Colorado River
Valley. At this time, it looks like Friday will be the windiest day
in the forecast. Temperatures will gradually try to warm back to
near normal by next week.

.AVIATION...For McCarran...Lower clouds and and showers were
exiting to the east early this morning. VFR conditions expected
today and tonight with few-sct clouds with bases mainly 6-9 kft.
Winds will likely be light and variable early this morning but
should trend to a northwest direction by about 18z with speeds
around 10 knots. Winds may trend toward typical night time drainage
south/southwest after 08z this evening.

For the rest of southern Nevada...northwest Arizona...and southeast
California...Drier conditions are in store today but there could be
some mountain snow showers with mountains obscured at times. Cloud
bases mainly 5-9 kft but down to 2-4 kft at times in snow showers.
Showers are expected to dissipate by early this evening. Most areas
will see northwest winds today and tonight with speeds 5-15 knots.
Local gusts around 20 knots are possible mainly across Nye and
Lincoln Counties.

.SPOTTER INFORMATION STATEMENT...Spotter activation is not expected
through the weekend.
&&

$$

Update...Morgan
Short Term/Aviation...Harrison
Long Term...Steele

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