We have confirmed that shaking from the Earthquake that occurred in Greenbrier, Arkansas tonight could be felt in Helena-West Helena. For more information, visit http://earthquake.usgs.gov.
Here's the link the most recent quake in Greenbrier, AR: 4.7 Quake
Here's the ShakeMap which seems to indicate that most of the state suffered weak shaking and no damage.
WHAT TO DO IN CASE OF EARTHQUAKE