Sierraville, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

568
FXUS65 KREV 132117
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
217 PM PDT Wed Aug 13 2025

.KEY MESSAGES...

* Showers and thunderstorms probable this afternoon south of Highway
  50, becoming confined to Mono and Mineral County Thursday.

* Hot today with a cooling trend through the weekend. Breezy winds
  each afternoon should produce minor impacts to fire, aviation, and
  recreation.

* Increasing chances of showers and thunderstorms this weekend
  near the Oregon border with a warming trend next week.

&&

.DISCUSSION...

Showers and isolated thunderstorms will continue to develop through
the afternoon in Mono, S. Lyon, Mineral, and E. Churchill counties.
Strong outflow winds up to 60 mph will serve as the primary impact
today, but t-storms will also be capable of 0.25-0.50" hail,
brief heavy downpours, blowing dust near desert sinks and playas,
and occasional lightning. Shower and storm activity should linger
into the early evening before tapering off by 8 PM PDT. Farther
north away from storms, breezy west winds with gusts of 20-30 mph
will yield areas of elevated fire weather conditions and minor
impacts to travel and recreation through sunset.

A drying trend will limit thunderstorm coverage on Thursday,
confining best odds of 10-20% to Mono and Mineral counties. Hot
weather sticks around for the rest of the week, but weakening high
pressure will provide several days of cooling. As a result,
temperatures return to seasonal averages Thursday and even dip below
average over the weekend. Winds will remain breezy each afternoon
heading into the weekend, but are not expected to stronger than our
typical zephyr.

Low pressure will anchor in the eastern tier of the Gulf of Alaska
this weekend, directing abnormally rich moisture into the Pacific
Northwest. As a result, shower and thunderstorm chances increase
across Lassen County and N Washoe County Saturday and Sunday
afternoons. Winds may also trend slightly stronger on Saturday, but
should still be on par with typical zephyr breezes. Slow warming
will accompany building high pressure next week with shower/storm
chances possibly shifting to areas south of Tahoe/Reno around
midweek.

-Salas

&&

.AVIATION...

Isolated thunderstorm development south of US-50 will persist
through the afternoon with KMMH having the greatest likelihood (30-
40% chance) of storm impacts until 02Z. Elsewhere, SW/W surface
gusts of 20-30 kts may present minor LLWS impacts into the early
evening -- especially at KRNO-KCXP-KMEV where gusts are strongest.

Isolated showers and storms will be possible at KMMH Thursday
afternoon (10-20% odds) while VFR conditions and typical afternoon
breezes prevail elsewhere.

-Salas

&&

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

$$