Marine Weather and Tide Forecast for Country Club, CA

FXUS66 KSTO 132036 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 1236 PM PST Thu Nov 13 2025

For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing.

KEY MESSAGES

- An atmospheric river storm system will continue to bring widespread precipitation, gusty southerly winds, cooler temperatures, isolated to scattered thunderstorms and mountain snow through Friday - Potential for some additional light rain and snow showers Saturday into early Sunday, particularly I-80 southward - A colder weather system will bring Valley rain and mountain snow Sunday PM through Monday.

DISCUSSION

Today through Friday
An atmospheric river storm system will continue to bring widespread moderate to locally heavy precipitation, isolated/scattered thunderstorms, gusty southerly winds, and light high-elevation Sierra snow through Friday. The latest guidance shows some heavier precipitation moving across the area this afternoon into the evening. A Flood Advisory remains in effect until 7 PM across portions of the Sacramento Valley, northern San Joaquin Valley, Delta, and Sierra foothills.
Potential impacts include minor flooding in low-lying and poor drainage areas as well as mud/rock slides in the foothills. WPC Guidance shows additional precipitation totals to be around 0.50-1.5 inches in the Valley and 1.5-3.5 inches in the foothills and mountains (locally higher amounts are possible over the mountains). Snow levels are expected to remain above 8000 feet through tonight, lowering to around 7000-7500 feet by Friday morning. A Winter Weather Advisory remains in effect above 7000 feet for the northern Sierra from 4 PM Thursday to 10 AM Friday.
Highest snowfall amounts are still expected south of Highway 50.
Gusty southerly winds are expected through this afternoon, and a Wind Advisory remains in effect for the Valley, Delta and Northeast Foothills from 10 PM tonight through 1 PM Thursday.
Isolated thunderstorms may also develop today, with generally a 10-30 percent chance being advertised by the NBM (mainly south of I-80). Isolated embedded thunderstorms will be possible as the main frontal band move through. Activity will become less widespread on Friday, with best shower chances over the mountains.

Saturday through Sunday Morning
Light showers are expected Saturday into Sunday morning as an upper low pushes northward. Minimal impacts are expected from this at this time, with less than 0.25 inches north of I-80 and 0.25-1" south of I-80. There could be some minor snow accumulations in the Sierra south of Highway 50, with 1-3 inches expected above 7500 feet.

Sunday PM through Early Next Week
There is potential for another round of light to moderate precipitation late Sunday into Monday as colder weather system drops down from the north. WPC Guidance shows the latest precipitation totals to be around 0.25-0.50" in the Valley and Delta, with 0.5-1.25" in the foothills and mountains. This system will be colder, with snow levels around 7000 feet late Sunday, potentially lowering to around 5500-6000 feet by Monday morning.

Mid to Late Next Week

Drier conditions are expected Tuesday through Wednesday morning.
Then, another colder system may approach the region late week.


AVIATION
MVFR/IFR conditions due to low clouds and rain as a weather system pushes through the area. South winds gusting 20 to 35 kts over the Valley and foothills until 03Z, lingering gusts 15 to 20 kts will still be possible until 08Z Friday. Additionally there is a 15 to 25% chance of thunderstorms mainly along I-80 southward until 09Z Friday. After 10Z, surface winds generally 12kts or less. Over the mountains, southwest winds gusting 20 to 30 kts until 12Z Friday.
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