Area Forecast Discussion
Issued by NWS Reno, NV

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996
FXUS65 KREV 192130
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
230 PM PDT Sat Oct 19 2019

.SYNOPSIS...

Gusty winds through this evening could cause issues for high
profile vehicles, mainly north of I-80, and turbulence for
aircraft, along with choppy lake conditions. After today, high
pressure off of the Pacific Coast will bring light winds and a
warming trend going into the first half of next week.

&&

.DISCUSSION...

Strong and gusty W-NW winds continue this afternoon, weakening this
evening into the overnight hours. Winds continue to bring concerns
for recreation with choppy conditions on area lakes, as well as
difficult travel conditions for high profile vehicles and turbulence
for aviation. Areas of blowing dust also remain a possibility
through this evening downwind of the desert areas in west-central
Nevada. This may bring minor visibility reductions to portions of I-
80 from approximately Trinity Junction eastward and US-95.

Following the system today, a ridge gradually builds along the west
coast, bringing warm and dry conditions with light winds. High
temperatures the first half of the week will be pushing about 10
degrees above normal. It will be a great time to get out and enjoy
the fall weather...or just clean up all the leaves left in the yard
from today`s wind; something I know I`ll need to do.

A dry backdoor cold front will bring northerly flow and a slight
cooldown to the region Wednesday into Thursday, but there is good
ensemble agreement that the ridge rebuilds the end of the week.
Model spread increases for the weekend into the start of next week,
which at this point looks to have the biggest impact on
temperatures. The operational EC is much colder with a closed low
dropping directly over the region, but it`s ensembles are not as
pronounced with this. The GFS/GEFS is beginning to trend in this
direction, but it`s more of a backdoor front than a closed low. For
now, started to trend temperatures down, but in any case, the
pattern doesn`t suggest any big rain/snow events. -Dawn

&&

.AVIATION...

An upper level wave and cold front will continue to move through the
region this afternoon and evening. The most significant concerns
will be mountain wave-induced turbulence, gusty winds, and mountain
obscurations.

Several LLWS and light to moderate Chop reports have occurred
near KRNO this morning and early this afternoon. The LLWS activity
looks to decrease this afternoon as the angle between ridgetop
and valley winds begins to decrease. However, mountain wave-
induced turbulence will remain a concern through at least 06Z as
the upper level jet noses into the Intermountain West/Rockies.
West wind gusts 30-35 kts can be expected at western Nevada and
Sierra terminals through 03Z before winds diminish behind the cold
front.

Showers have decreased across the southern border of Oregon and
northwestern Nevada. Lowered CIGS along with some mountain
obscurations will be possible through tonight as the front passes
through the region.

VFR conditions along with light winds are expected Sunday through
the middle part of the week. -Johnston

&&

.FIRE WEATHER...

Humidity values remain above 30% in areas that are seeing the
strongest wind gusts, helping to mitigate significant fire
weather concerns. Wetting rain has fallen in far northern Washoe
County, near the Oregon border, but elsewhere remained mainly dry.
Winds will be on the decline tonight into Sunday, but may remain
breezy through the Warner Mountains and ridges of the Sierra.
Warm and dry conditions next week are likely to once again dry out
fuels, so keep in mind that fire season isn`t over yet. -Dawn


&&

.REV Watches/Warnings/Advisories...
NV...Lake Wind Advisory until 8 PM PDT this evening for Pyramid Lake
     in NVZ004.

     Wind Advisory until 10 PM PDT this evening NVZ005.

     Lake Wind Advisory until 8 PM PDT this evening for Lake Tahoe in
     NVZ002.

CA...Wind Advisory until 10 PM PDT this evening CAZ070.

     Lake Wind Advisory until 8 PM PDT this evening for Lake Tahoe in
     CAZ072.

&&

$$

For more information from the National Weather Service visit...
http://weather.gov/reno



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