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Posted by on April 22, 2008, 12:32 am
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> Anyone know how all this interconnects with the NOAA "weather service"
> "all hazards alert" radio network? Those transmissions are
> monitored by pretty much every PSAP (public safety answering point,
> aka the 911 centers), utility control rooms, etc.
EAS and SAME are almost the same, except NWS uses a single 1050 Hz
tone to open older receivers while EAS uses 853/960Hz dual tone. The
embededed information is the same, as are the FIPS (county) codes.
The ENDECs will accept an input from either weather radio, a
tieline/frequency, or another broadcast station.
It's all figured out at the state level, but NOAA can monitor the SP
or LP to fulfill their "all hazards" function, while radio stations
monitor NWS weather radio (or newswire or weather wire) for WX related
alerts.
> Is there cross-activation of these by the local emergency
> authority (either county or governor?).
If agreeded to by NWS, county/state officials can call in an alert to
the NWS. This is usually a backup to a backup. The NWS usually
originates all the EAS Wx messages. It's state dependant, but most
EMAs are discouraged from issuing their own Wx alerts, and prohibited
from issuing watches and warnings.
There are also paths for LEOs to input AMBER alerts. Again anything
but presidential messages and followup information is determined at a
state level.
Patton Turner FAA Telecommunications pmturner@mindspring.com
| ![emergency alerts, was: Philadelphia emergency text messaging system [Telecom]](/images/header.jpg)
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