FXUS66 KSTO 231946
AFDSTO
Area Forecast Discussion
National Weather Service Sacramento CA
1246 PM PDT Wed Apr 23 2025
Synopsis...
Chances for afternoon and evening showers are in store into the
early weekend with Friday-Saturday as the best days for
widespread precipitation and thunderstorm development. A cooling
trend with light mountain snow showers on Saturday is expected
with minor travel impacts.
.Key Messages...
* Today: Last day of warm temps and trending cooler through the
rest of the week. Isolated showers and thunderstorms tonight,
mainly over Shasta County.
-Probability of high temperatures 75 degrees F or higher: 50-85%
-10-25% chance of isolated showers or thunderstorms Wednesday and
Thursday PM across northern Sacramento Valley and surrounding
terrain.
* Thursday-Weekend:
-Cooling trend with breezy to gusty onshore winds Thursday and
Friday PM
-Isolated to scattered showers and thunderstorms (10-30%)
possible, primarily near the Coast Range & Shasta/Tehama
County, becoming widespread Friday afternoon through Saturday
-High elevation snow showers possible late Friday & Saturday,
with a 40-70% probability of 2 inch or more of snowfall above
5500 feet along Sierra/southern Cascades, 25-55% of 4 inches or
more
-Lingering mountain showers Sunday, then trending warmer and
drier
For additional details on weather and expected impacts
over the next 7 days, please visit weather.gov/sto/briefing
.Changes from previous forecast...
* Isolated thunderstorm potential increasing for Thursday-Friday
PM
* High elevation snowfall potential continues to trend higher
Friday afternoon through Saturday evening
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