152
FXUS65 KREV 171929
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1229 PM PDT Thu Jul 17 2025


.KEY MESSAGES...

* Isolated showers and thunderstorms possible each afternoon through
  Friday south of US-50, especially in Mono and Mineral counties.

* Seasonably hot and dry into the weekend with typical afternoon
  breezes. Hazy skies along the Oregon border from wildfire smoke.

* Stronger winds are trending more likely early next week, which may
  impact travel and recreation, and elevate fire concerns.

&&

.DISCUSSION...

Typical summer temperatures continue this week across the Sierra and
western Nevada. The daytime afternoon heating will result in our
usual westerly zephyr winds each afternoon through the weekend with
gusts typically around 20-25 mph. With summer, comes the smoke.
Current fires, such as the Green fire, will continue to produce haze
and smoke for areas across NE CA and NE NV, especially for far
northern Lassen, northern Washoe, and Surprise Valley.

Thunderstorm potential (10-20% chances) remains with sufficient
moisture and heating available for areas particularly south of
Highway 50. There were a handful of storms yesterday as well, with
lighting and brief heavy rain. Impacts from storms include gusty
erratic winds, brief heavy rain, and lightning. A few hi-res
simulations show storms skirting as far north as Interstate 80
vicinity later this evening, but westerly winds should limit the
storms just east of Reno/Carson City. This storm pattern will linger
onward through Saturday as the trough in the Pac NW and high
pressure over Central NV continue to battle for position.

Looking ahead to next week, the trough finally starts to overwhelm
high pressure fixed over the region. As the ridge breaks down and
shifts eastward, we will be in store for a cooldown as well as the
potential for stronger west to southwest winds. While the near-term
wind gusts remain marginal through Saturday, there is increasing
potential for more concerning gusts that would create critical fire
conditions by late Sunday into Monday.

-Edan

&&

.AVIATION...

* VFR conditions for most terminals this week along with enhanced
  afternoon westerly breezes and gusts up to 25 kts through 06z.

* 10-20% chances for showers and thunderstorms are possible near
  KMMH and KHTH between 21z-04z daily through Saturday.

* Expect typical density altitude concerns for summer that may
  impact aircraft performance.

* Bigger changes arise by late Sunday into Monday with increasing
  potential for surface wind gusts exceeding 30 kts.

-Edan

&&


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

$$