Downtown Santa Rosa broke a century-plus record for having the most amount of rain within a 72-hour period — 12,7 inches. The previous record was 9.72 inches. “We broke it by a healthy margin,” Flynn said. “We’ve never seen that much of rain over three days since we started recording.”

This week’s atmospheric river storm smashed some heavy rainfall records in parts of the Bay Area, especially the North Bay, before mostly petering out by Saturday morning. Downtown Santa Rosa received 12.

Friday was the wettest day of the 2024 in many areas, including San Francisco, which received 2.97 inches of rain — or 13% of its annual yearly rainfall in one day — and Oakland, which received 2.46 inches in one day. San Jose saw less on Friday, .72 inches, for its wettest day since Feb. 2, when .87 inches fell.

The first atmospheric river storm of the winter rainy season slammed into California on Wednesday. Driven by a powerful “bomb cyclone” off British Columbia, it brought heavy rains to Sonoma and Marin counties, dumping more than 6 inches in the hills above Guerneville by mid-afternoon.

Sunny skies on Saturday morning gave Bay Area residents a break from the two days of heavy rains that pounded the region, breaking daily rainfall records in cities from Santa Rosa to San Jose. “We still are going to have rain these next few days,