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Wireless Emergency Alerts (WEA): A Great New Weather Tool For Show Crews
http://controlgeek.net/blog/2014/4/9/wireless-emergency-alerts-wea-a-great-new-tool-for-show-crews

It’s spring, and that means the start of severe weather season, and also the time when many of us in show business start working on outdoor shows.

There are three types of alerts: Presidential, Imminent Threat, and Amber. Imminent threats include weather warnings issued by the National Weather Service (NWS), all of which most certainly could be an imminent threat to a show site.

Tornado Warnings
Flash Flood Warnings
Hurricane and Typhoon Warnings
Extreme Wind Warnings
Dust Storm Warnings

The alerts are special messages that are broadcast from cell towers to nearby phones, and they go through even when there is heavy voice or text network usage (like at a large event). Since the messages are broadcast, the issuer of the alert does not know your cell phone–the alerts are just issued to every cell phone on a certain carrier in a specific area.

The service is “opt out”, meaning if your phone has the feature, it will be enabled by default. You can turn off all but the Presidential Alerts; I would recommend keeping your imminent threat alerts turned on.