∙ Sonoma County officials say property damage from last week's atmospheric river could top $155 million. 1,760 homes are said to have sustained major damage, as well as 578 businesses. [CBS SF]

∙ A firework was mistaken for an explosion Saturday night near 5th and Market and the Powell Street BART station. The news led to a significant police response and an emergency alert. [Examiner]

∙ The SF police union is suing the block the retroactive release of SFPD personnel files related to misconduct and shootings. Police unions throughout the state are pushing back on a state senate bill seeking greater police transparency. [Examiner]

∙ The Mission High School boys soccer team just won the Northern California Division V championship, but they did it without teammate Aaron Villareal. Villareal is in critical condition after a crash on I-80 Thursday that took the lives of his three siblings. [CBS SF]

A flood warning is in effect through tomorrow night in Solano and Yolo counties. [ABC 7]

The Warriors avoided their third straight loss, beating the Philadelphia 76ers Saturday night 120 to 117. [ABC 7]

John Camajani, who's been the stage manager of Beach Blanket Babylon since 1979, is retiring after 40 years. [Examiner]

Photo: Jim Champion