Empress Theatre (California) repainted and the "Empress Theatre" sign was painted into the pediment. Its window panels were uncovered and refurbished, seats from Fox Theatres were salvaged and installed, gypsum decoration was re-gilded, and period-appropriate carpeting was laid. The Empress thrived throughout the decade. 1989 On Tuesday October 17, the Loma Prieta earthquake, measuring 6.9 on the moment magnitude scale, shook the San Francisco Bay Area; the Empress Theatre was not spared. To repair damage from the quake and make the building seismically safe for use was a task so monumental that it caused the theatre to sit vacant and derelict for nearly
Earthquake prediction of having observed such phenomena prior to an earthquake, no such phenomena has been shown to be an actual precursor. A 2011 review found the "most convincing" electromagnetic precursors to be ULF magnetic anomalies, such as the Corralitos event (discussed below) recorded before the 1989 Loma Prieta earthquake. However, it is now believed that observation was a system malfunction. Study of the closely monitored 2004 Parkfield earthquake found no evidence of precursory electromagnetic signals of any type; further study showed that earthquakes with magnitudes less than 5 do not produce significant transient signals. The "International Commission on Earthquake Forecasting for