Challenge, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

973
FXUS66 KSTO 131923
AFDSTO

Area Forecast Discussion
National Weather Service Sacramento CA
1223 PM PDT Sun Apr 13 2025

.Discussion...

.Synopsis...
Mostly dry and warm weather with areas of Minor HeatRisk this week.
Breezy northerly winds today and again late week. Non-zero chance
of isolated light showers or thunderstorms over the Sierra Nevada
and southern Cascades each afternoon Tuesday - Friday.

.Key Messages...

* Today - Monday:

    -Breezy northerly wind gusts today along the western
     Sacramento Valley with gusts of 20 to 30 mph at times.

-Above-normal temperatures will continue heading into this week
     with Minor HeatRisk in the Valley and foothills. Warmest
     temperatures expected on Monday.

-Probability on Monday of max temps of 85 degrees F or higher:
- 30 to 60% in the N San Joaquin and S Sacramento valleys
- 65 to 95% in the central/northern Sacramento Valley

* Tuesday - Saturday:

-Warm weather continues, briefly cooling to near normal in some
 areas on Thursday

-15-30% probability for light shower or thunderstorm over the Sierra
     Nevada and southern Cascades Tuesday-Friday afternoons,
     confidence is much lower for the late-week timeframe

-Probability of northerly Wind Gusts > 30 mph Friday:
       - 45-75% mainly along the western Sacramento Valley

-Some uncertainty in the pattern headed towards next weekend,
     though generally looks warm and calm after Friday

.Changes from previous forecast...

* Increased probability for isolated afternoon mountain
  thunderstorms this week, best chances remain on Tuesday and
  Wednesday

* Increased spatial coverage of probabilities for breezy
  northerly winds on Friday

&&

.AVIATION...
VFR conditions expected next 24 hours at TAF sites. Breezy north
winds with gusts up to 25 kts at times through 00z, becoming
generally light and less than 12 kts after 00z.

&&

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

&&

$$