Portola, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

273
FXUS65 KREV 140653
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1153 PM PDT Fri Jun 13 2025

.KEY MESSAGES...

* Breezy afternoon winds persist through much of the upcoming
  week, with potential for longer periods of gusty winds Monday
  and again by next weekend.

* Typical June temperatures and dry weather prevail through
  Tuesday, with moderate HeatRisk returning by Wednesday and
  Thursday.

&&

.DISCUSSION...

* For the weekend we`ll maintain the dry southwest flow aloft with
  weak shortwaves transiting through the area. Expect breezy
  west/southwest winds during the afternoon and evening throughout
  the eastern Sierra, NE CA, and W NV. Wind gusts between 20-30
  mph will be common for most of the area, with ridges gusting
  between 30-40 mph. It will remain very dry this weekend, with
  seasonal to just above seasonal high temperatures and cool
  nights.

* Attention then turns to Monday with the passage of a trough the
  Great Basin. West to southwest winds will strengthen through the
  day, leading to widespread gusts of 25-35 mph for much of NE CA
  and W NV. Stronger gusts of 35-45 mph are focused along the
  ridges in the Tahoe Basin southward into Mono, Mineral, and Lyon
  counties. Be prepared for bumpy flights, blowing dust in the
  Basin and Range, and choppy waters on area lakes. Breezy winds
  will continue to overlap very low RH, which will maintain
  elevated to locally critical fire weather conditions during the
  afternoon and evening. While it`s expected to be dry, blended
  guidance offers a 5% chance of thunderstorms near the Oregon
  border.

* Ridging pattern returns to the area on Tuesday through Thursday.
  Temperatures will trend back above average, with daytime highs
  in the upper 70s to mid 80s for Sierra communities and upper 80s
  to mid 90s for western Nevada valleys. It will remain dry, but
  with lighter winds.

* Heading to the end of the work week into next weekend, model
  ensembles are still depicting an upper low impacting the western
  US. There is still discrepancies into the strength and track of
  this feature, with a few solutions showing a deep low over the
  Great Basin while other ensemble solutions showing a faster
  trough through the Pacific Northwest. Either way, this will need
  to be watched for the potential of strong winds with fire
  weather concerns. -McKellar

&&

.AVIATION...

* Widespread VFR conditions will prevail through the upcoming
  weekend. More typical PM gusts of 20-25 kt are likely this
  weekend at all eastern Sierra and western NV terminals. Winds
  could ramp up again for Monday with increased aviation impacts.
  -McKellar

&&

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

&&

$$