Recommendation Tuesday started as a joke and is now an official thing. If you've got a book to recommend on this or any Tuesday, tweet me at @FullShelves and I'll help spread the word.
View all of the past recommendations over here.
I'm not sure how I discovered Jill Sorenson's Aftershock suspense series--it's highly likely that I first heard about it from Brie, when I was looking for a series to replace Laura Griffin's Tracers series, which isn't as fun as it once was.
Regardless, this series continues to hit that sweet spot of interesting characters and fabulous WTFery. (That's a compliment.)
There are several books and this series, and while they do stand alone, there's actually quite a bit of world-building in the first novel, Aftershock, which depicts the immediate aftermath of a catastrophic earthquake in San Diego. We're introduced to characters who will serve as protagonists in future installments and the earthquake influences characters' arcs in the future. So, basically, start with Aftershock and read in order if you get hooked.