I conduct meetings -- training sessions and testing exercises -- in banks across the country. A remarkable change has taken place in the past few years -- everyone has a smartphone.
At any given moment during my meetings, something like 60% of the participants are focused on me (in rapt attention, of course). 20% are looking at their phones.
I'm sure they're monitoring the local EMT Twitter feed, or looking at monitoring weather alerts. Certainly not changing their Facebook status or updating their resume on LinkedIn.
The point is that bankers use smartphones nowadays. Constantly.
So smartphones are where emergency notification lists should be.
There are low-cost, and even no-cost, ways to accomplish this. But it takes some resourcefulness and time. Most importantly, you have to be able to achieve what I call "platform independence" for your contact database.