San Francisco grapples with how to fight massive firestorm expected after next big quake

San Francisco’s Marina was ravaged by fire during the Loma Prieta earthquake, centered 60 miles away.Thirty years later, experts say, as much as a third of the city is still largely unprotected against the massive fires they fear will be sparked by the Big One.“The way the situation is now, we are going to have some major conflagrations in the city,” said Charles Scawthorn, an engineer and earthquake fire modeling expert, who predicts as many as 100 separate fires across the ci