Area Forecast Discussion
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
524 FXUS66 KSTO 272129 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 129 PM PST Thu Nov 27 2025 .KEY MESSAGES... - Dry conditions and periods of morning Valley and adjacent foothills fog continue late week into the weekend - Seasonable temperatures and dry weather favored for Thanksgiving Day - Decreasing chances for precipitation but periodically breezy north to east winds expected late weekend into next week && .DISCUSSION... ...Today - Friday... Current GOES-West imagery shows a broad stratus deck enveloping the Delta, Valley, and adjacent lower foothills this afternoon. Any lingering patchy fog and reduced visibilities will continue to improve through the remainder of the day, with additional dense fog development anticipated this evening into Friday morning. Probabilities of visibilities less than a half-mile currently sit around 50 to 70 percent throughout the Delta, Valley, and adjacent foothills locations. Aside from periodic fog development, cool and dry weather are expected to persist through the end of the week as well. ...This Weekend - Next Week... While a slight chance for isolated mountain showers remains possible late Saturday into Sunday, predominantly dry weather is expected to continue this weekend into early next week. Breezy north to east winds will be possible Sunday into Monday as well, although strongest wind gusts up to 35 mph are expected along the Sierra at this time. With a more persistent offshore wind pattern setting up late weekend into next week, fog development is expected to be lesser relative to this past week. Otherwise, seasonable temperatures look to persist. Ensemble guidance then indicates some potential for a trough retrograding toward the west coast around the middle of the week. While uncertainty remains high at this time, potential for breezier north to east winds and another slight chance for mountain showers will be possible. && .AVIATION... Areas of MVFR to IFR conditions linger across the Central Valley until around 23z Thursday, then MVFR to VFR conditions expected until near 06z Friday before IFR to LIFR conditions return to the Delta, Sacramento Valley, and northern San Joaquin Valleys into 18z Friday. MVFR and IFR conditions then until 23z Friday. Light and variable winds generally less than 12 kts across interior NorCal for the next 24 hours. && .STO WATCHES/WARNINGS/ADVISORIES... Dense Fog Advisory from 10 PM this evening to 11 AM PST Friday for Carquinez Strait and Delta-Central Sacramento Valley- Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley. && $$