Area Forecast Discussion
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
659 FXUS66 KSTO 142221 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 221 PM PST Fri Nov 14 2025 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... - Lingering showers are expected through early this afternoon, then additional showers spread from the south tomorrow through Sunday morning - A colder system will bring more widespread rain and snow Sunday PM into Monday. Breezy southerly winds will accompany the system, along with isolated thunderstorms on Monday. - Drier conditions return on Tuesday into Wednesday, followed by a weaker weather system late Wednesday into Thursday. .DISCUSSION... ...Today (November 14) through Sunday AM... Showers will continue to spread northward over the eastern Valley and the Sierra foothills/mountains through the afternoon. Additional precipitation amounts are forecast to be less than 0.50" and snow levels are expected to remain above 8000 feet. Shower activity is expected to taper off through the evening and into the overnight period. Light showers are expected Saturday into Sunday morning as an upper low pushes northward. Precipitation amounts did trend higher, with the highest amounts over the eastern Valley and Sierra foothills/mountains. Forecast precipitation totals are 0.75" or less north of I-80 and between 0.50-1.00 southward in the Valley. Amounts over the mountains and foothills are generally between 1.00 to 1.75 inches. Snow levels trended slightly lower, but will start out above 8000 before dropping down to 6000 Sunday morning with accumulations of 4 to 10 inches above 6000 feet south of I-80 in the Sierra. Onshore winds will also increase over the weekend with the strongest gusts in the Delta and northern Sacramento Valley. Forecast gusts are between 30 to 40 mph. ...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 0.50-1.00" in the Valley and Delta, with 1.00-1.50" in the foothills and mountains. This system will be colder, with snow levels around 7000 feet late Sunday, lowering to around 5500-6000 feet by Monday morning. Additionally there is a 10 to 20% chance of isolated thunderstorms Monday afternoon. Breezy southerly winds are also expected with this system, with forecast gusts between 25 to 35 mph. ...Mid to Late Next Week... Drier conditions are expected Tuesday through Wednesday morning. Then, a weaker system approaches the region late week. .AVIATION... Lingering areas of MVFR/IFR conditions due to low clouds and light showers through 00z-03z Saturday. Local MVFR/IFR conditions due to low clouds and/or BR across portions of the northern San Joaquin Valley 12z-18z Saturday. Additional showers will bring periods of MVFR/local IFR conditions after 18z Saturday, becoming more widespread Saturday night. Surface winds generally 12kts or less, except for locally breezy north to east gusts 15-20 kts across portions of the northern Sacramento Valley and mountains 15z-21z Saturday. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$