Alpine Meadows, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

199
FXUS65 KREV 042113
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
213 PM PDT Sat Jul 4 2026

.KEY MESSAGES...

* Seasonable heat with dry conditions today outside of a 10-15%
  chance of isolated showers along the E.Sierra and NE CA.

* A passing trough will increase clouds and provide chances for
  morning showers with isolated T-storms Sunday afternoon. A few
  storms may produce isolated dry lightning/gusty outflow winds.

* Hotter temperatures and increasing HeatRisk possible mid-week
  into next weekend.

&&

.DISCUSSION...

High temperatures this afternoon will reach their warmest values
of the week with highs in the mid-to-upper 90s across much of
W.Nevada and portions of NE California. Sierra valleys will
generally see low to mid 80s this afternoon.

Expect cumulus build-ups again this afternoon across elevated
terrain areas which may yield enough instablilty to pop a few
isolated showers along the E.Sierra and over portions of Lassen
County this afternoon (15% chance with a 5% chance of an isolated
thunderstorm).

Shower and storm chances increase on Sunday as a shortwave trough
tracks across the N.Sierra and NW Nevada. Forcing from this wave
will result in increasing clouds on Sunday with bands of light
morning showers with a 10-20% chance of isolated thunderstorms
extending from the E.Sierra from Mono County/Tahoe Basin into the
Sierra Front and far NE California/NW Nevada near the Oregon
border. These storms look to elevated and faster moving so
isolated dry lightning strikes are possible along gusty outflow
winds around 40-50 mph near any storm activity.

In addition, this shortwave trough may provide a bump to our late
afternoon and early evening winds on Sunday roughly northward of
Susanville and Pyramid Lake. This could yield in localized areas
of critical fire weather conditions due dry conditions combined
with wind gusts of 25-35 mph across portions of E.Lassen,
N.Washoe, and Pershing counties late Sunday afternoon/evening.

This shortwave will also push temperatures down around 5 degrees
for Sunday and Monday before a heating trend returns for the
remainder of the week. Strengthening high pressure across the SW
will allow highs to return to the upper 90s by Tuesday and near
triple digits by next weekend across W.Nevada with Sierra valleys
generally warming to the mid and upper 80s. Expect areas of
moderate to major heat risk for hotter W.Nevada valleys. Fuentes

&&

.AVIATION...

VFR conditions prevail today with a 10-15% chance of showers near
KTRK-KTVL-KMEV and around a 5% chance of an isolated T-Storm.
An upper level disturbance will increase cloud cover on Sunday
and provide increased chances of a light band of showers in the
morning with 10-20% odds of an isolated thunderstorm across Tahoe
and Sierra Front terminals Sunday afternoon. Otherwise, expect
light morning winds to become breezy each afternoon with typical
west gusts of 20-25 kts. Fuentes

&&

.FIRE WEATHER...

A shortwave trough will track across the E.Sierra on Sunday and
could trigger isolated areas of elevated and fast moving
thunderstorms. These storms will be capable of producing isolated
cloud-to-ground dry lightning strikes and gusty outflow winds.

Areas across the Tahoe Basin and Sierra Front could see
areas of banded light showers by Sunday with a 10-15% chance of
afternoon thunderstorms. However, the best potential for dry
strikes are expected across portions of E.Lassen County into the
Surprise Valley, and far N.Washoe county near the Oregon border
(15-20% chance). A few of these storms could be better organized
with isolated stronger cells which could be capable of producing
hail and strong outflow winds up to 50 mph. Any new ignitions
could rapidly spread with these gusty outflow winds.

In addition, this passing wave could produce localized critical
conditions due to a wind increase late Sunday afternoon and
evening across NE California/NW Nevada, mainly across Fire
Weather Zones 278 and 458. Wind gusts could reach 25-35 mph with
minimum RH dipping to 10-15%. Fuentes

&&

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

&&

$$