Horatio gets a call that the detonations will start in 5 seconds. At least 20 seconds go by after that call before any explosions happen.
When Horatio drives out of the exploding building, the car drives in a perfectly straight line. But whenever Horatio is shown, he's turning the wheel quite a bit.
Miami is bracing for a Tsunami and the initial crime scene is at a OSH hardware store and clearly shows the OSH (Orchard Supply) green shopping carts. OSH is only located in California.