810
FXUS65 KREV 201939
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1239 PM PDT Fri Sep 20 2024

.SYNOPSIS...

* A dry weather pattern with mainly light winds prevails through
  early next week, with a possible increase in winds by midweek.

* Temperatures will remain near seasonal averages through next
  week.

&&

.DISCUSSION...

High pressure off the west coast will keep a dry northwest to
north flow aloft over CA/NV through this weekend, with generally
light surface winds mainly north to northeast, although some gusts
near 20 mph could occur at times for the US-95/US-6 corridors in
Mineral and southeast Mono counties. A weak upper disturbance
within this flow treks southward along the CA coast Sunday,
eventually becoming a closed upper low offshore from southern CA
as the high pressure builds inland over the northern Great Basin,
setting up a blocking pattern early next week. However, a trough
approaching the northwest US may disrupt this block by mid-late
next week.

Despite all these moving parts in the upper level pattern, the
overall effects and impacts will be minimal for the eastern
Sierra-western NV, with weather conditions favorable for most
outdoor activities. Precipitation chances remain very low (below
10%) for the upcoming week, with daytime temperatures generally
within a few degrees of seasonal averages (lower 80s for western
NV valleys and lower-mid 70s for Sierra communities), and cool
nights as the fall equinox quietly arrives at 5:44 AM PDT Sunday
morning. Winds may pick up by Wednesday or Thursday afternoon if
the trough follows the southern end of the range presented by the
ensemble guidance (about 15-25% of simulations), but even this
scenario would only bring a moderate increase in southwest winds
with gusts 25-30 mph. The majority of the ensembles (75-85% of
simulations) indicates either a weaker trough or a track farther
north into the northwest US/SW Canada, which would lead to only a
modest increase in afternoon breezes. MJD

&&

.AVIATION...

Patchy but shallower fog is likely to return for the next couple
of mornings around KTRK, mainly between 09-15Z. Otherwise, light
afternoon winds, mostly sunny skies, and VFR conditions will
prevail through the weekend and into next week. MJD

&&

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

$$