126
FXUS65 KREV 152218
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
218 PM PST Mon Dec 15 2025

.KEY MESSAGES...

* Chances of rain and high elevation snow increase across the Sierra
  and far NW Nevada Tuesday afternoon into Wednesday.

* Gusty winds may impact recreation and travel on Wednesday with
  elevated fire concerns in southern Mono County.

* Periods of gusty winds, rain and mountain snow possible late
  this week into early next week.

&&

.DISCUSSION...

Our much awaited pattern change is expected to unfold this week as
dampening high pressure allows the storm track to dip southward
towards the region. We`ll still be on the southern periphery of the
storm track so a bulk of the rain and snow will stay north and west
of the region, but a couple trough passages will bring periods of
light rain and mountain snow this week.

The first opportunity for rain and snow will be Tuesday afternoon
through Wednesday morning as transient low pressure increases shower
chances to 60-90% from the Tahoe Basin towards the Oregon border.
Showers likely spill into far NW Nevada Wednesday morning, so don`t
be surprised to see light rain across the Greater Reno-Carson-Minden
area during the AM commute. Snow levels will remain above 9-10k
feet, which would confine snowfall (dusting to 4") to highest Sierra
peaks.

Winds also begin to intensify along Sierra ridges Tuesday night with
gusts reaching/exceeding 100 mph by Wednesday morning. Enhanced
winds aloft are transported to the surface Wednesday afternoon,
resulting in SW/W gusts of 35-45 mph across lower valleys with wind
prone locales seeing gusts upwards of 60 mph. Be prepared for choppy
lakes, aviation impacts, and crosswind driving hazards along north-
to-south oriented roadways such as I-580, US-395, and US-95. Low-end
fire weather concerns will also exist across lower elevations of
southern Mono County where RH reductions to near 30% are expected.

A second trough passage is slated for Friday, bringing renewed wind
impacts and nearly identical shower chances as its predecessor. The
weather pattern becomes zonal over the weekend, which will keep
moisture directed into the region and support periods of rain and
snow through the weekend. Ensembles advertise unsettled weather to
continue into next week with more organized storms impacting the
region, which increases the likelihood of holiday travel
disruptions leading up to Christmas.

-Salas

&&

.AVIATION...

FG/FZFG and reduced VIS/CIGS continue to be the main concern for
Tahoe terminals, especially at KTVL where fog has proven to be
more persistent. Fog may return to the KTRK/KTVL tonight into
Tuesday morning, otherwise VFR conditions persist through Tuesday
morning.

Increasing winds and shower chances are expected Tuesday afternoon
into Wednesday.

-Salas

&&

.REV Watches/Warnings/Advisories...
NV...Lake Wind Advisory from 10 PM Tuesday to 1 PM PST Wednesday
     NVZ002.

CA...Lake Wind Advisory from 10 PM Tuesday to 1 PM PST Wednesday
     CAZ072.

&&

$$