Area Forecast Discussion
Issued by NWS Las Vegas, NV
FXUS65 KVEF 242230
Area Forecast Discussion
National Weather Service Las Vegas NV
230 PM PST Tue Jan 24 2017
.SYNOPSIS...Dry and cool conditions are expected through Friday,
with a gradual warming trend over the weekend. Strong north winds
are likely in the Colorado River Valley Friday through Sunday.
.DISCUSSION...Very spotty light showers in San Bernardino and Mohave
Counties this afternoon, with only one CG lightning strike noted
east of Kingman shortly after 22Z. Elsewhere, skies were mostly
sunny, with lots of snow cover noted on visible satellite. The
showers should dissipate quickly after sunset as heating is lost and
stabilization begins. Cold cyclonic flow in the wake of the
departing storm should gradually move away to the east overnight,
with drier northwest flow taking over Wednesday. A weak kink in the
flow will work its way southward into northern Nevada Thursday,
bringing increasing clouds to the southern Great Basin with only a
minimal chance of light showers in the higher terrain. This wave
will amplify a bit as it digs through the Mojave Desert Thursday
night. As surface high pressure builds over the Great Basin in its
wake, and northerly winds aloft overspread the region on Friday,
strong north winds are likely to develop in the Colorado River
Valley. Barring a significant shift in the track of this wave, Wind
Advisories will likely be needed. Strong winds are likely to persist
at least through Saturday and possibly Sunday before subsiding.
Temperatures in most areas will remain well below normal through
Friday before a warming trend begins on Saturday. Near normal
temperatures are possible by Sunday or Monday.
.AVIATION...For McCarran...Sct clouds with bases mainly 6-9
kft into the evening before giving way to only some high clouds
tonight and Wednesday. Winds will be north to northwest direction at
10 kts or less thru 03z and then trend toward typical night time
drainage south/southwest. Light and variable winds on Wednesday but
will favor a northeast direction in the afternoon.
For the rest of southern Nevada...northwest Arizona...and southeast
California...Cloud bases mainly 5-9 kft but down to 2-4 kft at times
in snow showers in Mohave County. Showers are expected to dissipate
by early this evening. Most areas will see northwest winds tonight
with speeds 5-15 knots. Light winds are expected on Wednesday.
.SPOTTER INFORMATION STATEMENT...Spotter activation is not expected.
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