Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 302133

Area Forecast Discussion
National Weather Service Las Vegas NV
233 PM PDT Thu Mar 30 2017

.SYNOPSIS...A powerful wind storm will continue to impact the
region this evening, bringing widespread wind gusts of 45 to 65
MPH. Winds will decrease somewhat overnight, however gusty winds
will remain through Friday, especially across the southern Great
Basin. This system will also bring isolated thunderstorms to areas
north and east of Las vegas. A weaker storm will move across the
area Monday. &&

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

A large storm system has moved into the desert southwest bringing
wind as it primary concern.  The wind storm impacting the area
today has thus far lived up to its billing as southwesterly wind
gusts to over 60 mph have been recorded in portions of the Las
Vegas Valley and surrounding areas. Gusts to over 80 mph have been
recorded in the more notoriously windy spots in the mountains.
Blowing dust has been windespread as seen in satellite imagery and
in local observations, with some areas seeing visibility reduced
to below one half mile. But this is only the beginning. A cold
front will be moving through the area this afternoon bringing
potentially stronger wind and sharply colder temperatures as the
wind shifts to the north. Isolated showers and perhaps a
thunderstorm or two are possible with the cold front. The greatest
chance for these is across the southern Great Basin this
afternoon and evening, however, some showers are possible over
northern portions of the Las Vegas Valley.. As the low pressure
system moves across the four corners area, gusty north wind will
remain across much of the area. Friday will see temperatures about
10 degrees cooler than today with gusty wind that will be less
than today but still gusting 25 to 35 mph in most areas.
Conditions will continue to improve on Saturday with some
lingering wind and warming temperatures.


.LONG TERM...Saturday Night through Wednesday

Low pressure if forecast to linger near the Four Corners region before
getting nudged eastward by an incoming upstream wave on Sunday.
This upstream system will be the next adverse weather generator
for our area but should pale in comparison to its predecessor. The
time frame for the main event for this next system will be Monday
with another cold front pushing through Monday afternoon. This
system then pushes east by Tuesday, leaving ridging overhead for
Wednesday. Models are hinting at an AR event for the West Coast
heading into the latter part of next week but this is beyond the
official 7-day forecast and I will leave it at that for now.

Breezy north winds to continue into Saturday with the area still on
the backside of the departing low pressure system. Light winds
return Sunday morning but may begin to respond in the afternoon as
the next system approaches the west coast. Windy conditions are
expected once again on Monday with another cold front pressing south
during the day. The quick hitting nature of the system will allow
winds to decrease faster and all but the Colorado River Valley
should see lighter winds Tuesday and Wednesday. Precipitation
chances will be limited to mainly the mountains of the Southern
Great Basin and perhaps northern Mohave County on Monday with dry
conditions forecast Tuesday and Wednesday. Above normal temperatures
are expected over the weekend then cooling back to seasonal levels
Monday and Tuesday.


.AVIATION...For McCarran...Strong and gusty southwesterly wind
has developed in the Las Vegas Valley ahead of an approaching cold
front. Wind gusting over 40 kt has been common and will continue.
Reduced visibility with vsby of 3-5 SM at times through the
afternoon. There will be a wind shift between 22Z and 23Z when
wind will become northerly with sustained wind around 35 kt
gusting to near 50 kt. Wind will decrease a bit later in the
evening. However, northerly wind gusting 25-35 kt will continue
through Friday.

For the rest of southern Nevada, northwest Arizona and southeast
California...Strong wind will continue through the afternoon and
evening hours.  For the Las Vegas Valley and areas south,
southwesterly wind will gust to near 60 kt at times through the
afternoon. Visibility will be reduced to below 1SM at times due to
BLDU. A cold front will move into the area this afternoon,
reaching VGT between 22Z and 23Z and moving into IFP and EED by
02Z. Northerly wind behind the front will gust to over 50 kt at
times. While wind will decrease a bit this evening, it will remain
northerly gusting 25-35 kt through Friday.


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


Short term/Aviation...Berc
Long term.............Salmen

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