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by daeken 5409 days ago
Well, let's suppose you're in Trenton, NJ (since you didn't specify). The distance between Trenton and Toronto is 546 km. If it took 10 seconds to travel there, then it was traveling at 54.6 km/s, or 196560 km/hour. For comparison, the speed of sound is 340.29 m/s, or 0.34029 km/s; that means that the shockwave travelled at Mach 160.

Of course, this assumes that it was traveling over the surface, so it's really lower than this, but I'm unsure of how much. From what I'm seeing, the fastest earthquakes generally travel about 13 km/s, so this may be way high.