271
FXUS65 KREV 180719
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1219 AM PDT Fri Sep 18 2026


.KEY MESSAGES...

* Smoke from local wildfires may lead to periods of degraded air
  quality across the Reno area, Tahoe Basin, and eastern Sierra
  today.

* Dry and breezy conditions prevail today with a slight cooldown and
  a shift from west to north winds.

* Plan on dry conditions through the weekend with the possibility of
  rain and thunderstorm chances returning to the Sierra south of
  Tahoe early next week.

&&

.DISCUSSION...

* Drier and breezier conditions follow on the back side of the
  upper trough venturing eastward today. The main concern with a
  dry, cool front passing through will be a shift from
  west/southwest winds to north winds around midday with gusts up
  to 25 mph for most areas. Ridge winds may reach up to 40 mph,
  particularly in the afternoon as the north winds with the front
  pass through the region. Winds will likely "slosh" around any
  lingering smoke and haze from nearby wildfires. Lighter, more
  easterly winds overnight may bank up any remaining bits of
  smoke/haze against the foothills. For air quality concerns and
  information, refer to fire.airnow.gov

* There won`t be a significant dip in the temperatures, but rather
  a slowdown in the warming trend as we head into the weekend.
  While temperatures today will remain a bit below normal, a
  shortwave ridge over the Sierra and western Nevada for the
  weekend will allow temperatures to climb into the low 80s for
  the lower valley areas. Temperatures will "hit the brakes" again
  by Monday and Tuesday as the ridge exits and another low passes
  across central CA. While there is uncertainty with this cut-off
  low, we may see a return of precipitation potential across the
  southern tier of the region (5-15% chances Mono/Mineral
  counties) as it slowly passes through from Monday into Tuesday.

* Ensemble clusters from Wednesday - Saturday show signals for a
  Pacific Northwest trough setting up off the coast, but there are
  variations in its progression. Blended guidance for the last
  weekend in September do show some increased potential for
  precipitation, but that will all be driven by when/how the large
  trough moves across the area. Plan on typical late September
  temperatures for now with a slight lean toward precipitation
  chances for next weekend.

-Edan


&&

.AVIATION...

* Smoke and visibility impacts: Smoke from nearby wildfires
  (Floriston fire west of Reno and Dome fire west of Yosemite) may
  impact slantwise visibility today at KMMH, KTRK, KTVL, and KRNO.

* Winds: Wind direction will gradually shift today with W/SW winds
  in the morning banking to N and NE winds by the late afternoon and
  evening. Winds will generally remain light with gusts 20-25kts
  possible after 20z.

* Winds will become light and easterly for late Friday into Saturday
  with dry and VFR conditions.

-Edan

&&


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

$$