Area Forecast Discussion
Issued by NWS Sacramento, CA
Issued by NWS Sacramento, CA
288 FXUS66 KSTO 242124 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 124 PM PST Mon Nov 24 2025 .KEY MESSAGES... - Dry conditions prevail this week, with periods of breezy offshore flow and morning Valley fog - Seasonable temperatures and dry weather favored for Thanksgiving Day - Potential for unsettled weather to return this weekend, but confidence is very low on details, impacts, and timing && .DISCUSSION... ...Today-Friday... GOES-WEST imagery shows lingering patchy fog and low stratus at the time of this writing. Visibility will continue to improve through the afternoon. Upper level ridging dominates the pattern through the end of the week; coupled with the recent precipitation, fog is possible the next few mornings as well, though the spatial extent should begin to shrink starting Tuesday. Outside of the morning fog, seasonable high temperatures with periods of offshore winds are expected to continue through the week. ...This Weekend... Cluster analysis and ensemble guidance continue to suggest the potential for the upper level ridge to break down and for low pressure to develop and approach the West Coast. Confidence is beginning to increase in a minimally impactful weather pattern. Some light mountain precipitation is possible, but little to no impacts are expected from this. Breezy winds are expected Sunday into Monday as well. We will continue to monitor for any changes to this system, so be sure to check back for updates and for local forecast information at weather.gov/sto. && .AVIATION... VFR to MVFR conditions through about 08z, then 60-80% chance for IFR to LIFR conditions in the central & southern Sacramento, & northern San Joaquin Valleys, and a 20-50% chance for the same in the central and northern Sacramento Valley. Variable winds generally less than 12 kts across interior NorCal for the next 24 hours. && .STO WATCHES/WARNINGS/ADVISORIES... None. && $$