And if the disaster is an Electromagnetic Pulse?

[Geordie_Rob]

With regards to the mobile network being available/unavailable during incidents, I was caught up in the London July 7th bombings (well not the actual bombs going off, but the immediate chaos afterwards) & mobile phone signal was zero. This was across multiple networks.

I'm not sure if this was shut down or simply clogged by too many people trying to use mobiles, but either way there was just no signal on anyone's phone. On the plus side, the Bt phone box that everyone was ignoring worked great & I was able to ring home to report that I was safe.

Apologies for going off track.

Back to the topic, I would welcome such notification. Surely it's another source of info. If used wisely (and the info is double checked to confirm its genuine rather than some shady people-herding) then it can give you an early warning of something you might not of heard about otherwise until its too late.