Area Forecast Discussion
Issued by NWS Las Vegas, NV

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FXUS65 KVEF 222011

Area Forecast Discussion
National Weather Service Las Vegas NV
111 PM PDT Sun Apr 22 2018

.SYNOPSIS...Dry, quiet, and warm conditions are expected through
much of the upcoming week. Temperatures will reach their highest
levels of 2018 thus far.

.SHORT TERM...Today through Monday Night.

Quiet and warm conditions will continue through the duration of the
short term period. High clouds that moved into the region overnight
were beginning to thin and move east of the area. Wind-wise, you`d
be hard-pressed to find an area with gusts over 15 MPH across the
area, and most areas will remain under 10 MPH. Temperatures are as
expected today, with 85F at McCarran and 93F at Death Valley as of
1245PM, on its way to about 90F and 101F respectively this
afternoon. These conditions should continue through Tuesday, with
temperatures climbing ever so slightly Monday. As mentioned by the
previous shift, the one thing to watch will be isolated high-
elevation convection near the Sierra crest. However, between limited
moisture and instability I have left the forecast dry for now.

.LONG TERM...Wednesday through Sunday.

Wednesday and Thursday will be characterized by above normal
temperatures, mostly dry conditions, and periods of breezy, south to
southwest winds. A few extra high clouds can be expected on
Wednesday as a weak impulse passes to our south. A closed low
centered off the northern California coast will slowly shift
eastward midweek which will gradually weaken the ridge over the
local area; creating potential for an isolated shower or two over
the southern Sierra on Thursday. Little has been changed to the
forecast for Friday and Saturday as long term models diverge with
the evolution of the closed low going into the weekend. The latest
GFS runs have the low passing directly over the area this weekend
while the ECMWF keeps the low tracking to our north across the Great
Basin. This leaves very different outcomes for the weather over the
local area so have only made small changes to the forecast. The main
change was to add low end precip changes to Esmeralda and northern
Inyo counties and increase wind speeds slightly areawide for Friday
and Saturday. Temps for the weekend will be highly dependent on how
this scenario unfolds.

.AVIATION...For McCarran...Diurnal trends expected through today.
Overnight southwest winds should remain below 11 kts before
decreasing early tomorrow morning. Southwest winds will dominate
through much of tomorrow reaching KLAS by 20-22Z tomorrow. Expect SW
winds of 10-14 kts with gusts up to 15-20 kts tomorrow afternoon. No
operationally significant clouds or weather expected through Monday.

For the rest of southern Nevada, northwest Arizona and southeast
California...Diurnal trends expected through today. Increasing
southwest winds tomorrow afternoon mainly remaining below 20 kts. No
operationally significant clouds or weather expected through Monday.

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


SHORT TERM...Wolcott
LONG TERM....Guillet

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