Earthquakes

[5-Dime NwK]

I was at work yesterday and i was flippin through the channels and i saw Frisco on TV, it was on the history channel talkin about the 1906 Earthquake and the following firestorm.
got me thinking about the 1989 quake and how crazy that shit was.
that shit was a 7.1, in 1906 they believe it was a 7.9
what do yall think the major effects would be if a quake of that magnitude or greater hit Frisco, or even if the Hayward fault went off like that.
i just find earthquakes crazy and wanted to see what yall thought

MAGNITUDE AND EPICENTER
The Loma Prieta earthquake occurred on October 17, 1989 at 5:04 p.m. Pacific Daylight Time. It had a moment magnitude of 6.9 and a surface wave magnitude of 7.1. The duration was 15 to 20 seconds.

The earthquake occurred due to slip in either the San Andreas Fault or a subsidiary fault.
Much of the displacment was vertical motion typical of reverse or thrust faults, according to Greg Beroza and Paul Segall of Stanford University.
The epicenter was near Loma Prieta, which is a peak in the Santa Cruz mountains. This location is 10 miles northeast of the city of Santa Cruz.

A strong-motion seismograph gave an acceleration reading of 0.64 G near the source.
The focal depth was 11 miles (18 km), which is unusually deep. Typical California earthquake focal depths are 4 to 6 miles.
The fault rupture did not break the ground surface. Superficial ground cracks occurred in a number of locations, however.
This earthquake was the largest earthquake to occur in the San Francisco Bay area since 1906.
Furthermore, it was the most severe earthquake in California since the Kern County 1952 quake.