I definitely experienced my first earthquake this morning, 11/5/2011. It was strange as it happened. There was a slight and gentle shake but quite noticeable was groaning sounds of wood coming from the walls of my home. It lasted for not quite 10 seconds. Some people, like myself, initially thought it was a sudden gust of wind. It's been reported as felt in neighboring states. There has been some after shocks. This earthquake may be tied for the second strongest ever in Oklahoma history. The strongest one was 5.5 in 1952.http://stillwaterweather.com/okareaearthquakes.php
From the ok geo survey: http://www.okgeosurvey1.gov/
Preliminary Earthquake Report, November 5, 2011
Contacts: Austin Holland or Amie Gibson, Oklahoma Geological Survey, (Email Us)
On November 5, 2011 at 2:12 AM CDT (07:12:45.4 UTC) an earthquake occurred in Lincoln County, Oklahoma. The earthquake occurred about 6 miles northwest of Prague and 5.2 miles southeast of Sparks. The OGS determined a ML magnitude of 4.8 and the USGS currently has it at a magnitude 4.7 (Mb) these two numbers are essentially the same given the errors in calculating magnitude. Both the USGS and the OGS have determined a magnitude 5.2 mbLg for this event. This earthquake occurred very close to where a magnitude 4.3 earthquake occurred on February 27, 2010. From the location of the earthquake and the focal mechanism it is most likely that this earthquake occurred on the Wilzetta fault also known as the Seminole uplift. As of 3:30 AM CDT on 11/5/11 the OGS has received a few hundred reports.
We will be updating this page as we get more information so please check back.