The EQ wave across USA 12/6/18 midnight Velocity.
Average East to west coast 2530 miles = 4,071,640 meters
Began Midnight in Russia and entered USA about 12:12 Amuntil about 12:50 AM
38 minutes= 3,000 seconds
= 1785.8070175438596491228070175439 m/s is the velocity of the EQ 12/6 midnight wave.
Hell No- and EQ's do not go in waves across a continent!!!!!!!!!!!!!
Earthquakes are local events that propagate locally maybe a few hundred miles for a 6 or 7.0. Velocity would depend upon the density of the earth and the power of the EQ. So the question, and I do not know the answer, is how many seconds from the event would someone 10 or 100 miles away feel the shake. I don't know.
Got it:
How fast does a earthquake travel?
The rupture speed of most earthquakes tops out around 5,600 to 6,700 mph (9,000 to 10,800 kilometers per hour) which is slower than the speed at which seismic shear waves (one type of seismic wave generated by an earthquake) emanate from the epicenter of the quake.Aug 16, 2007