Overview
- A mid to upper-level low is set to bring light to moderate rain to the Central Coast on Wednesday, spreading into the Bay Area by afternoon and lingering into Thursday.
- NOAA meteorologist Nicole Sarment estimates 0.5 to 1 inch from the first system, with up to 2 inches possible in higher elevations.
- A stronger atmospheric river is forecast on Friday, centered on the North Bay, with 0.75 to 3 inches in lower spots, 4 to 5 inches in the mountains, and a 10–15% chance of thunderstorms.
- King tides from Wednesday through Sunday increase the likelihood of minor flooding along San Francisco and San Pablo bays and in low-lying coastal areas.
- Cold, foggy nights persist before a slight daytime warmup, and colder weekend air boosts Sierra snow chances with roughly 6 to 12 inches over the passes by Saturday.