532
FXUS65 KREV 050754
AFDREV

Area Forecast Discussion
National Weather Service Reno NV
1254 AM PDT Sun Oct 5 2025

.KEY MESSAGES...

* Below average temperatures through the start of next week, with
  dry conditions.

* A warming trend arrives Tuesday into at least Thursday, with dry
  weather.

* There is the chance for another system by the end of next week,
  but confidence in the details remains low.

&&

.DISCUSSION...

* For today and Monday, a long-wave trough remains situated over
  the western half of the US, with an upper low moving south along
  west coast. With this pattern, we`ll maintain the cooler than
  average temperatures along with no precipitation. We can expect
  the eastern Sierra valleys to drop well into the 20s for low
  temperatures, with the colder western NV valleys falling to
  around the freezing mark.

* High pressure shifts over the region by Monday into Wednesday.
  This will lead to gradual warming trend Monday through Thursday,
  with a return to average temperatures for mid-October. We`ll
  remain precipitation free through at least Thursday.

* Still a lot of uncertainty by Thursday into the end of the 7-day
  forecast period next Sunday. What the ensembles are all showing
  is a deep upper low pressure originating in the Gulf of Alaska
  dropping south off the west coast by Friday. This low pressure
  then moves inland by next weekend. Where the ensembles start to
  differ is in the timing, track, and strength of the upper low.
  These differences can mean either cool than average temperatures
  with precipitation, or dry and seasonal. Bottom line, keep
  informed of the changing forecast this week. -McKellar

&&

.AVIATION...

* Low chances (20%) for FG/FZFG through 15z for KTRK. Otherwise,
  all western NV and eastern Sierra terminals can expect VFR
  conditions.

* Winds are light today from the east, with afternoon gusts to 15
  kts. -McKellar

&&

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

$$