4 quakes of magnitude 4.0 or more hit northwest Oklahoma
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Four earthquakes capable of causing moderate damage have been recorded in northwestern Oklahoma.
The U.S. Geological Survey reports a magnitude 4.7 quake hit just before 10:30 p.m. Wednesday about 20 miles northwest of Fairview and a magnitude 4.8 quake struck about a half mile away less than a minute later. Two magnitude 4.0 quakes were recorded in the area just after 2:30 a.m. Thursday and 2 p.m. Thursday.
Fairview police say there are no reports of damage or injuries.
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The quakes were felt in Kansas and the USGS says up to eight states may have been affected.
More than a dozen smaller quakes were also recorded Wednesday night and Thursday.
Oklahoma's earthquakes have been linked to injecting wastewater underground from oil and gas production. Regulators have ordered a reduction in volume or the closure of some wells.