Living in the Bay Area of CA, we have had our share of quakes. By the time any software would relay any impending quake, it is already too late. I feel them all the time, minor movement of my easychair or groan of my old manufactured home. Last one of any significance was a 4.5 with the epicenter directly below my bedroom at 3:20 in the morning!! That one got my attention, but was over before I was fully awake. I do use an app that lists all the quakes in our area, or any area that you designate. I lived in Glendale/Pasadena area when the Northridge and Whittier quakes hit with tremendous amount of damage. Our chimney broke off at the roof line. I will never forget that feeling of complete helplessness. It's not just the initial quake, but the aftershocks that follow for hours after. Here is a typical listing on the app. You can see we have had 540 quakes this year!
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