Record-tying Oklahoma earthquake felt as far away as Arizona

Another 5.6 earthquake struck in 2011. "And then the house and everything was shaking".

The quake ties a 2011 earthquake for the strongest earthquake in recorded state history. The declaration is also the first step toward seeking federal aid should it be necessary.

Boak denied the charge that fracking is the cause of Oklahoma's earthquakes.

Hundreds of acres and round bales consumed by wildfires, the loss of a barn or home to a tornado.

Jan said her hands were still shaking for about three hours after the quake.

King says they inspected the buildings elevators, looked for leaks in the plumbing and to see if light panels were loose. After all, it seems, life has come full circle - from a farm girl and 10-year 4-H member who traveled to area shows with her hogs and broilers to a woman taking the helm of a multi-million-dollar, fee-funded state agency.

An increase in magnitude 3.0 or greater earthquakes in Oklahoma has been linked to underground disposal of wastewater from oil and natural gas production. The commission has previously asked producers to reduce wastewater disposal volumes.

Some parts of Oklahoma now match northern California for the nation's most shake-prone.

"If this earthquake's epicenter was under buildings in downtown Oklahoma City, we'd have a different situation", Bellini said.

Over at the Pawnee Bill Ranch and museum artifacts were knocked over, and cracks in the foundation and walls could been seen following the quake.

"I got away from agriculture and I missed it a lot", she said, adding, "When I saw the opportunity that came open for competitions at the Kansas State Fair, I just saw that as a great opportunity". The plant continued operating Saturday, but station personnel increased monitoring of plant equipment, per the plant's policy.

The unnatural addition of the water can change pressure along fault lines, causing slips that make the earth shake, experts say. He went on to say, "Oklahoma is the small earthquake capital of the U.S.", Boak clarifies.

The U.S. Geological Survey (USGS) identified north-central Oklahoma as the epicenter of the 5.6 magnitude quake, which struck at 7:02 a.m, about eight miles from Pawnee, a town of about 2,200 people.

The Oklahoma Corporation Commission, a regulatory agency that examines the state's fuel, oil, gas, public utilities and transportation industries, is "reviewing disposal wells in the vicinity of the earthquake near Pawnee", Oklahoma Gov. Mary Fallin said via Twitter. Last year, the state had 907 such quakes.

"My bed was, like, wiggling, and I thought someone was wiggling in my bed", said Qnique Johnson, of Des Moines.

One homeowner suffered minor injuries, but he is already out of the hospital. "It certainly was not the alarm clock I was looking for", she said.

The quake was 3.7 miles deep, the United States Geological Survey reported, according to the Associated Press.

The USGS also reports about a half-dozen aftershocks in the same area, including one that was a 3.6 magnitude at 7:58 a.m.