Arcadia - Oklahoma, that US state where, according to the song, "The wind comes sweeping down the plain," had more to worry about Saturday than breezy weather as it experienced a 4.5 magnitude earthquake.

Early reports of little, if any damage, did not take into account the rattled nerves of locals. Weeks ago it was the two-year anniversary of the strongest earthquake ever recorded in Oklahoma and obviously Saturday's temblor caused some anxiety among local people.

According to CS Monitor though "after the initial surprise, customers at a central Oklahoma restaurant returned their attention to an in-state college football rivalry game." For some the frequency of quakes in the area is leading to complacency. To make matters worse Saturday, for those less blas'e, two further quake's occurred.

The U.S. Geological Survey reported that the tremor was followed by a "magnitude-2.8 earthquake at 1:26 p.m. about 10 miles northeast of Oklahoma City and a magnitude-3.1 tremor at 5:58 p.m. about 6 miles northeast of the city." The main quake was centered near Arcadia, about 14 miles northeast of Oklahoma City, and was about 5 miles deep.

After the quake Sgt. Joe Bradley of the Jones Police Department told NBC News that as temperatures were low he expected reports of burst pipes later. He added that earthquakes in the state are becoming more commonplace saying:
"I've lived in Oklahoma my entire life. I remember small ones we probably wouldn't even feel. In the last two years they've been quite common in our area. This is the biggest one we've had so far."
Since 2009 200, 3.0 plus magnitude earthquakes have been recorded in the middle of the state. In 2011 the strongest earthquake on record struck. That 5.6 magnitude quake resulted in damaged buildings and some people sustaining minor injuries. Previously CSMonitor reported the largest earthquake recorded in Oklahoma was a 5.5-magnitude tremor in 1952.

According to anti-fracking groups Increased seismic activity in the area is due to fracking.

Whatever the cause though, the people of Oklahoma know that seismic activity is volatile in the area raising fears of further earthquakes.