Area Forecast Discussion
Issued by NWS Reno, NV
FXUS65 KREV 242257
Area Forecast Discussion
National Weather Service Reno NV
257 PM PST Fri Feb 24 2017
Two disturbances will move through the region this weekend, one late
tonight and Saturday with a second Sunday into Monday. Light
snowfall is possible with both, although the second looks a little
stronger and may provide gusty winds Sunday afternoon. Temperatures
will remain below average through early next week.
A series of shortwave troughs will provide increased clouds and
chances for light and spotty snow showers on Saturday with a
secondary wave providing better chances for snow accumulations
Sunday evening into Monday morning. Little in the way of
accumulations are expected on Saturday but light to moderate
snowfall on Sunday evening may be enough to create traffic slow
downs and chain restrictions through the Tahoe Basin.
No big changes in the forecast but did slow down the arrival of
Sunday system with travel impacts mainly possible through the
northern Sierra Sunday evening into early Monday morning. Snowfall
will be measured in inches and not feet like with our recent storms.
Snow accumulations won`t be heavy but will still be enough to
create some travel impacts by Sunday evening and have issued a
Winter Weather Advisory as a result. Accumulations of 4-8" will be
possible near the crest through the Tahoe Basin with lighter amounts
in the 2-4" range possible at lake level and north and south of the
Tahoe Basin through Lassen and Mono Counties. Light snow showers
will be possible across western Nevada valleys Sunday evening as
well but overall accumulations should stay light and generally under
an inch. The takeaway message would be that if you are looking to
head up to the mountains this weekend, your best bet to avoid travel
headaches due to weather would be to leave before Sunday evening.
Winds will also become gusty on Sunday afternoon as the system
approaches with valleys reaching gusts in the 40-45 mph range will
ridge gusts increasing to near 90 mph. These strong winds will
result in hazardous conditions on area lakes and boating is not
advised on Sunday. Otherwise, lingering light snow showers will
prevail through Monday afternoon but minimal additional
accumulations expected. Fuentes
.LONG TERM...Tuesday and beyond...
Drier conditions are expected by Tuesday as the trough axis moves
towards the Rockies. For the rest of the week expect warming to
begin aloft with lower valleys warming substantially by midweek. By
the end of the week we could see temperatures rebound to the mid
50`s for western Nevada and mid 40`s in the Sierra with light winds
and no precipitation.
It looks like a drier pattern will continue through at least next
week and potentially longer. Flat ridging builds off the coast of
California through next week as the Polar jet stream retreats to our
north and the sub-tropical jet weakens. Ensemble atmospheric tools
do show the potential return of sub-tropical moisture to the west
coast around next weekend; however, current projections continue to
keep the highest probabilities of moisture mainly north of the Oregon
A few light radar returns are evident on the west slope of the
Sierra this afternoon with very light showers possible in that area.
Weak area of low pressure currently off the coast of Oregon is
expected to slide south through California through Saturday. Some
cold convective snow showers will be possible with intermittent
reductions in visibility > 3SM and terrain obscurations.
Outside of occasional showers VFR conditions expected through Sunday
when another weak winter storm is expected. The one exception is
KTRK where fog could again form between 12-18Z. -Zach
NV...Winter Weather Advisory from 7 PM Sunday to 7 AM PST Monday
CA...Winter Weather Advisory from 7 PM Sunday to 7 AM PST Monday
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