Whole lot of shaking going on - Arkansas

Nothing super major but there have been a cluster of Mag 4 quakes in Arkansas over the last few days. From the Texarcana Gazette:

More earthquakes vibrate Arkansas
An earthquake powerful enough to be felt 200 miles away struck Greenbrier about 2 a.m. Friday, when most residents were asleep. Many probably never woke up.

Greenbrier Fire Chief Jim Sutterfield said he was one of those who slept through it. The earthquake didn�t damage any buildings or cause any injuries, and Sutterfield said earthquakes have become so common in the area that residents are used to them.

�My wife said it shook our windows in the house,� Sutterfield said. �We�ve had about 18 to 20 earthquakes nearly every day this week.�

The 4.3 magnitude quake that struck early Friday is the largest one so far in what seismologists are calling the Guy-Greenbrier swarm�a slew of small earthquakes occurring in the state�s north-central region. It is also the third-largest earthquake since a similar grouping of tremors in the 1980s called the Enola swarm.

Hope that this has nothing to do with the New Madrid. That one is overdue...