I don't know what the emergency alert will be used for.
The only things I can sensibly imagine may be war, nuclear and biological leaks - hopefully very rare.
Bad and extreme weather does not suddenly happen but forecast hours or days ahead. Pandemics do not strike folk down with no warning.
Perhaps it will be like the motorway signs warning us of the blindingly obvious (it's raining hard, fog - slow down etc).
Or maybe to justify the expense of such a system we will be treated to frequent warnings of something. Or perhaps its a subterfuge for the sinister - with almost universal ownership of smart phones it can be used as a means of social control.
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