Area Forecast Discussion
Issued by NWS Reno, NV

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FXUS65 KREV 170000 CCA
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
343 PM PDT Wed May 16 2018

.SYNOPSIS...Unsettled weather will continue through this evening
due to an upper level system bringing instability and moisture to
the region. The showers and storms are expected to continue
tomorrow with a decrease in areal activity on Friday. However,
the unsettled weather is anticipated to stick around the forecast
area through next week. Temperatures will be at or just above
normal for this time of year.

&&

.SHORT TERM...Tonight through Friday. It was an active afternoon
across eastern California, northern and western Nevada as a
closed low continues to rotate over the region. A moist and
unstable air mass helped to produce showers and thunderstorms over
the region with some locations receiving 0.20 to nearly an inch of
precipitation. Snow levels dropped to 7500 to 8000 feet across the
Greater Lake Tahoe area this afternoon with snow accumulating on
Mount Rose Summit. The upper level low will move east and isolated
to scattered showers are possible tomorrow. By Friday the area
should see a decrease in the areal coverage of showers and storms.
Highs will be in the low to upper 60s on Thursday and mainly in
the 70s for Friday. Overnight lows will be in the 30s and 40s.

.LONG TERM...Friday night through next Wednesday.

By Friday night, the closed low that has been impacting the
weather this aftn will be moving east of NV. However, lingering
moisture will lead to an active aftn and evening in the Sierra.
Showers and thunderstorms should persist into the evening and
gradually weaken into the late evening.

Expect a similar weather conditions on Saturday and Sunday as
lingering moisture and additional trof energy will be moving in
off the Pacific Ocean. This will provide plenty of moisture and
lift for thunderstorms across the region. Some of the storms may
move into the western NV valleys on Saturday, but the best chance
would be on Sunday as the trof axis moves closer to western NV.
Some of the storms could be strong with gusty winds and small
hail, due to an increase in instability and shear.

By Monday and Tuesday, the energy slides south through CA and closes
off over the western Great Basin. This will produce widespread
showers and thunderstorms across the entire CWA through the middle
portions of next week. The weather will remain active and unsettled
through next week.

Snow levels should remain high through the entire period.
Accumulating snow would be confined to 9000 to 10,000ft. Each
morning, snow levels could locally drop to below 9000ft, but
confidence remains low in snow levels at this time.

&&

.AVIATION...-SHRA/-TSRA are still possible across all terminals
during the late afternoon and early evening hours. MVFR conditions
with LCL IFR cigs/vsby can be expected in the heavier showers with
a gradual scattering out of clouds after 12Z tomorrow before
showers and thunderstorms redevelop tomorrow morning and afternoon.

&&

.REV Watches/Warnings/Advisories...
NV...None.
CA...None.
&&

$$

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

JRM/86


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