SF CityNow

Outdoor Warning Siren Update: San Francisco is investing in upgrades to the aging Outdoor Public Warning System (OPWS). The siren system will be out of service during the two-year upgrade project. The upgrades include a new operating system, stronger encryption and hardware that will improve the reliability and security of the siren system. For more information, visit sfdem.org/sirenshutdown.

Winter Storm Season: Winter storm season is upon us. Take simple steps today to prepare for wet and cold weather. Visit sf72.org/hazard/severe-storms.

Sign Up for Emergency Alerts: Text your zip code to 888-777 or visit alertsf.org to sign up for AlertSF.