Hence, IBM helped to create an Android app that actually sends emergency alerts without a cell data pipe.
On the other hand, speed and prevention in emergency situations can save lives.
With Mesh web connection Alerts, IBM, owner of The Weather Company, tries to remedy this problem.

See the video below, which shows how the app works:-
But how does everything work?
One of the devices must be connected to the online grid to receive the main alert.
Then it spreads the information to other devices as if it were peer-to-peer (only without the internet).

However, isolated areas, unfortunately, would not benefit much.
But, if you want then you simply see the full list fromhere.
