[EAS] WEA used in NYC bombings

[Mike McCarthy]

Actually, this is to some extent already real...but remains only reactive.
 Not predictive.

A consortium of CA universities and public agencies are installing a
network of seismometers around the state. I don't fully understand the
science other than they have defined the hysterisis of major tremor wave
travel through the crust. (Much like the speed of sound.) This network
will be used to detect major tremors and engage auto-shut down of mass
transit rail and other tremor sensitive operations (building elevators,
gas valves, etc.) within a second or two and hopefully before a shock wave
reaches a given densely populated area.

As I understand, if the epi-center is less than 100 miles distant, the
system's reaction may only meet the shock wave as it arrives. Which is
fine to a great extent as the motive forces will at least be auto-shut
down and systems quickly secured.

Now...how would this translate into a WEA useful message?  Well...time. A
more distant epi-center would allow a "heads-up" auto-message to go out
while the whole PCS system remains operational. But that effort must be
within a second or two of "go" for the public to at least have their
attention grabbed, if not looking at their device when the shock wave hit
from a more distant epi-center.

MM

On Thu, September 22, 2016 10:41 pm, John Willkie wrote:
> All;
>
> Bill Ruck mentioned earthquakes.  Having felt more than a few, and even
> building-surfed during one in 1978, I have never seen that to be a
> realistic use of EAS.  The upside of earthquakes is that you immediately
> know if you survived.  Sending out an EAS message minutes or hours after