Big River, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

974
FXUS66 KSTO 072002
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
102 PM PDT Mon Apr 7 2025

.Discussion...

.Synopsis...
Isolated shower/thunderstorm chances continue this afternoon and
evening across Shasta County and the Sierra/southern Cascades
north of Interstate 80. Dry and mild weather then expected to
follow through the remainder of the week, returning to seasonable
temperatures by the weekend.

.Key Messages...

* Today:

-Probability of isolated thunderstorms: 10-20% in Shasta County
  through early evening

-Forecast rainfall: Additional accumulations of 0.25-0.5" in
  isolated thunderstorms across Shasta Co., with up to 0.1"
  possible in light showers elsewhere.

-Breezy southerly winds gusting 15-25 mph at times in the Valley
  and foothills, and 25 to 35 mph over the Sierra Crest

* Tuesday - Friday:

-Dry and warm weather expected through the remainder of the week
  with areas of Minor HeatRisk in the Valley

-Probability of high temperatures > 80F (Wednesday-Friday): 50-90%
  across the Delta, Valley, and foothills, highest
  probabilities on Thursday.

* Saturday - Sunday:

-Trend toward a somewhat unsettled pattern over the weekend

-Cool down to more seasonable temperatures expected, with breezy
  to potentially gusty northerly winds at times.

-Probability of Valley Wind Gusts > 40 mph: 20-50%, highest
  across northern and central portions of the Sacramento Valley.

-Slight chance (10-15%) for light precipitation over Shasta
  County and the northern mountains.

.Changes from previous forecast...

* Precipitation chances continue to trend down for the weekend
 period, while gusty wind potential is trending up at this time.

&&

.AVIATION...

Predominantly VFR conditions expected at TAF sites next 24 hours,
although some MVFR/IFR in isolated SHRA/TSRA through 03z at RDD
and along the Sierra. Snow levels 8000-9000 feet. Breezy southerly
surface winds gusting up to 20 kts at times today gradually taper
off after 03z.


&&

.STO WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$