The state legislature in unanimous vote last year (Reps and Dems) approved the building of an early warning system such as they have in place in China, Mexico (!) and Japan. Scientists in Berkeley this morning had a 10 second warning that the shocks were going to start, they and ~150 agencies, including B.A.R.T. Of course, the further you were from the epicenter, the more warning you got.
In their infinite wisdom the legislature failed to give the measure the $80 million necessary to furnish the system to the public, which would include cell phone warnings and other media, which would give the many millions of CA inhabitants the opportunity to brace themselves, jump under tables, curb their cars, etc. or at least slow them down, doctors to pull back their scalpels, etc. etc. etc. This little quake today did an estimated $1 billion dollars damage. That's a drop in the bucket (literally, virtually) compared to what will happen if a 7.0 earthquake (i.e. 45 times the energy) hits on the Hayward fault in the very populous and built up portions, and they say there's a 33% chance of that happening within the next 15 years.
Come on guys, pony up the dough. We need that early warning system.