The latest temblor hit around 8:46pm Monday, November 7, 2011 (in the middle of a major severe weather and tornado outbreak in the same location) near Prague, OK. This one was measured at a magnitude 4.7.
This is the third in a series of strong quakes that began on very early Saturday morning. Just as the third quake on Monday was a 4.7 so was the first one very early on Saturday morning. The second quake was the strongest in the history of the Sooner state at 5.6. That quake was felt in 9 states from New Mexico to Illinois.
Just for trivia interests, events like this when dozens of quakes happen in a small area over a small period of time are none as "Quake Swarms."
For more information on each of the quakes including maps and was you can post what you felt to the USGS site click the links below:
Quake #1 - 4.7 - Saturday, November 5, 2011 @ 2:12am
Quake #2 - 5.6 - Saturday, November 5, 2011 @ 10:53pm
Quake #3 - 4.7 - Monday, November 7, 2011 @ 8:46pm
Click hear to see the list of at least 29 temblors (as of print time 636am) that have happened in Oklahoma since Friday.