Area Forecast Discussion
Issued by NWS Reno, NV

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FXUS65 KREV 262059
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
159 PM PDT Wed Jun 26 2019


.SYNOPSIS...

Gusty winds continue through Thursday as low pressure stays parked
off the Pacific Northwest coast. The strongest winds are expected
this afternoon with breezy conditions on Thursday. Below average
temperatures will be in place into the weekend with a warm up by
Sunday into next week with typical summertime afternoon west to
southwest winds.

&&

.DISCUSSION...

The area of low pressure off the Pacific Northwest coast will
continue to be the primary driver of significant weather for the
next several days. No major changes were made to the forecast today
as gusty winds are still expected to impact much of the Sierra and
western Nevada through Thursday evening.

The upper level jet across the region will help to drive wind gusts
around 40 to 45 mph this afternoon and evening. Peak winds will
primarily impact areas from Highway 50 northward, particularly
through the Highway 395/I-580 corridor. Sierra ridge winds gusts
will also ramp up to around 75 mph. Widespread wind gusts Thursday
will be in the 30-35 mph range. Main concerns from these stronger
wind gusts will be choppy conditions on area lakes, blowing dust,
as well as increased fire danger. For more details on the fire
weather aspect, please see the discussion below.

By Friday the upper level low will slide eastward and inland, which
will allow the winds to dissipate significantly for Friday afternoon
and evening. The eastward progression of the trough will also
facilitate a cooling trend from Friday into the weekend. High
temperatures will be running about 7-10 degrees below average for
late June. Overnight lows in colder Sierra valleys will may see
values dipping to near the freezing mark by Thursday night.

Upper level troughing will remain somewhat stationary across the
West Coast through the weekend into next week. This will result in
stable and dry southwest flow, with little to no chances for
precipitation or thunderstorms. Sunday afternoon a quick moving
shortwave will kick across the region which will allow the winds to
pick up again. Gusty winds could result in choppy conditions for the
area lakes again.

A ridge attempts to strengthen across the Great Basin for mid to
late next week which will result in temperatures pushing back up
to the upper 80s and near 90 for western Nevada and upper 70s/low
80s in the Sierra valleys. No thunderstorms are currently in the
forecast through next week as the flow aloft remains out of the
southwest. -Edan

&&

.AVIATION...

Gusty winds are the main concern with VFR conditions continuing
through Thursday. Plan for mtn wave turbulence with local LLWS,
especially around Lake Tahoe and the Sierra Front. Gusts to 40 kts
this afternoon and 35 kts Thursday. Peak winds are expected 19-02Z
each day.

Overnight, winds will diminish at the terminals to around 10 kts.
However, with ridge winds continuing, LLWS is more likely for
KTRK/KTVL 03-16Z. Edan

&&

.FIRE WEATHER...
Winds are cranking this afternoon, which combined with humidity
values in the 8-15% range is causing critical conditions. Fuels are
borderline, but below 6000 feet the continuous grass crop from the
wet winter/spring, has cured enough that fire will carry, especially
given the 30-45 mph wind gusts. Red Flag Warnings remain in effect
through tomorrow. Winds will be slightly weaker Thursday with gusts
25-35 mph, with humidity values similar to today, if not a few
percent lower.

Overnight tonight, winds will weaken in valley locations, but may
not fully decouple, especially for wind prone locations and elevated
mountain valleys. Otherwise, winds will remain gusty across
midslopes and ridges through the night. Recoveries will be decent
tonight, similar if not higher than last night. The one exception
will be across Sierra ridgelines above about 9000 feet, where some
drier air is expected to work down.

Temperatures will remain 7-10 degrees below normal through the week,
with some warming (though still below normal) going into the
weekend. More typical afternoon breezes are anticipated Friday
through Sunday. -Dawn


&&


.REV Watches/Warnings/Advisories...
NV...Red Flag Warning until 11 PM PDT Thursday below 6000 feet in
     NVZ450-453-458-459.

     Lake Wind Advisory until 11 PM PDT Thursday NVZ002.

     Lake Wind Advisory until 11 PM PDT Thursday NVZ001.

     Lake Wind Advisory until 11 PM PDT Thursday for Washoe Lake in
     NVZ003.

     Lake Wind Advisory until 11 PM PDT Thursday NVZ004.

CA...Lake Wind Advisory until 11 PM PDT Thursday CAZ071.

     Red Flag Warning until 11 PM PDT Thursday below 6000 feet in
     CAZ278.

     Lake Wind Advisory until 11 PM PDT Thursday CAZ073.

     Lake Wind Advisory until 11 PM PDT Thursday CAZ072.

&&

$$

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


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