I'm not an expert but I thought the weather ones came from the equivalent of the Met Office?
Even if it were possible to cancel I can't imagine they would have if they weren't in rolling news that was covering it?
You are basically correct. If the station was covering it already or preparing their coverage its unnecessary for the EAS alert to be broadcast if its an over the air (antenna). If you are watching on cable tv, they typically will overlay the EAS alert in scroll or cover the entire screen. The audio will be completely covered by the alert. So you get the NWS NOAA radio alert, on weather radio, on broadcast radio, at the same time your phone will go off and then the outdoor sirens will go off if you live near one.
NOAA RADIO ALERT TRIGGERS AND FIRES OFF THE CABLE TV ALERT. In this case its shown to overlay the Weather Channel. (VIDEO AT 2:39] Additionally The WEATHER CHANNEL has built into its own system an alert that will trigger an a tone and a audio message that simply says a Tornado Warning has been issued for our Area. Then is will include a scrolling message. This is customized to a specific cable tv headend. So it work be broadcast across an entire area. Just were the headend is located.
THIS IS A CAR RADIO ALERT. [VIDEO :25] The audio drops and the alert is triggered by the NOAA Radio Alert
NOAA RADIO ALERT TRIGGERS ALARMS IN PRIVATE FACILITIES. [VIDEO 1:24] In this case the alert creates an automatic siren in each dorm room on the campus of a university. This saves the school from having to fire the alert. Its automatic and ensure the safety of the students, rather than an administrator having to fire off the alarm system. Clever.
WEA ALERTS ON SMART PHONES. The sound is the same as the other Alerts. In this case its for a FlashFlood Warning. I believe it works even if your phone is on silent. It will only trigger if your are the polygon of the warned area.
OUTDOOR SIRENS ARE TRIGGERED FOR THOSE OUTSIDE. Cannot be relied on to head indoors. Though you can typically hear them. Some have voice messages.
SCHOOL TORNADO PRECAUTIONS. [VIDEO 1:56] Head facing the wall hands over your head crouching.
Last edited by Mouseboy33 on 27 October 2019 2:14am - 8 times in total
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