Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 242123

Area Forecast Discussion
National Weather Service Las Vegas NV
223 PM PDT Sat Mar 24 2018

.SYNOPSIS...An early spring cold front will be pushing southward
through southern Nevada on Sunday afternoon and evening. This will
provide a chance of rain and snow showers to Lincoln County and
to the Sierra. Temperatures will fall to levels around 10 degrees
below normal for Monday and Tuesday, but then temperatures will
steadily increase during the rest of the week.

.DISCUSSION...The band of thick cirrus continues to thin and push
off to the east this afternoon now primarily over Mohave County.
Winds have developed and will continue to strengthen with the
strongest winds expected during the late afternoon and evening
hours. The strongest winds are expected across over the Spring
Mountains, far western side of the Las Vegas Valley and across the
western deserts of San Bernardino County with gusts of 40 to 50
mph. An isolated higher gust or two is possible in the Spring
Mountains. An isolated shower is possible late this afternoon or
early evening over the eastern Sierra west of Bishop. A cold
front will be working its way south through the area on Sunday and
there will be enough moisture and dynamics for scattered showers
primarily over the eastern half of Lincoln County and over the
higher terrain of the eastern Sierra on Sunday afternoon. Winds
will be gusty ahead and behind the cold front but are expected to
remain below wind advisory criteria. Northerly winds will be
prevalent on Monday with the strongest winds funneling down the
Colorado River Valley where a Lake Wind advisory may be needed.
A weak area of low pressure will develop over Mohave County on
Monday afternoon and will provide a chance of showers to the
eastern half of Mohave County on Monday. Northerly winds will be
in place once again but are expected to trend slightly weaker than
on Monday. Temperatures behind the cold front on Monday and
Tuesday will be around 10 degrees below their seasonal normals.

A ridge of high pressure will build in off the west coast on
Wednesday and slowly push to the east and dampen into the weekend.
This will provide dry conditions and a warming trend through the
remainder of the week. Temperatures on average will climb 20
degrees from Monday to Saturday.

.AVIATION...For McCarran...VFR conditions are anticipated through
the period, with SCT skies and CIGs aoa 20 kft. Gusty south to
southwest winds will remain through late morning Sunday, with a
slight speed decrease overnight. Downwind from area mountains
expect increased clear-air turbulence. A northwest wind shift, due
to a frontal passage, is forecast Sunday evening between 02z-04z
- winds will likely gust near 25 knots.

For the rest of southern Nevada, northwest Arizona and southeast
California...VFR conditions are anticipated through the rest of the
weekend. Strong westerly flow over the south Sierra will induce
significant clear-air turbulence on the leeward side (downwind) of
the range. A south to southwest wind with gusts 35-45 knots will
remain over the region through the afternoon and into the evening. A
cold front passage will shift wind direction to north/northwest on
Sunday; frontal progression will take a NW-SE motion and spread
through the entire region by late Sunday. Behind the front, north
winds will likely be gusty, especially along the Colorado River.

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



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