The website is about emergency preparedness and response in San Francisco, specifically under the SF72 initiative. It provides information on various hazards such as cold weather, earthquakes, electric outages, fire, heatwaves, severe storms, terrorism, tsunamis, and urban flooding. The site emphasizes the importance of being connected and informed during emergencies by gathering supplies, making a plan, watching stories from others affected by emergencies, and staying updated through the SF72 blog. It also offers tips for dealing with specific hazards like heatwaves and communicable diseases. Additionally, the website features CityNow updates on current events in San Francisco related to emergencies.