Quake shakes up part of Henryetta, state Monday

Back to back 4.0 and 4.5 earthquakes sent a Monday greeting across the state.
The two large tremblors were located some three miles northeast of Crescent in Logan County.According to the USGS, the first one, a 4.0 magnitude, hit at 12:49. The second, more powerful quake struck at 1:12 pm and registered 4.5.
There were scattered reports of the shockwaves throughout Henryetta and Okmulgee County.
Paul's Western Store workers said they thought a vehicle ran into the store. The shaking caused some clothing displays to rock on the shelves but no damage was reported.
Other residents in Henryetta said they felt the larger, more powerful shaker. One person said it shook the entire house while others reported their dogs started barking and running around.
According to the USGS website, each whole number increase in magnitude represents a tenfold increase in the power of the quake. In this case the second earthquake was 4.5 on the Richter scale which meant it was five times are strong as the one earlier in the day.

The two quakes were located about a half mile apart. The first quake was said to have originated nearly 3 and a half miles deep. The second one was much shallower, reported to be only two miles from the surface. Because of the shallow depth, the force of the second quake was felt over a wider area.
Those two quakes were the latest of six total tremors in the region since Saturday. Prior to the Monday event, the largest was a 3.9 Saturday while a 2.9 quake was said to have been the smallest.