Two moderate magnitude earthquakes shook northern Oklahoma on Saturday, including one near the major oil storage hub of Cushing. The strongest was a 4.5 magnitude quake recorded by the U.S. Geological Survey at 5:03 p.m. Saturday about one mile northwest of Cushing. It followed a 4.4 magnitude quake recorded at 4:20 a.m. about 18 miles southwest of Medford and about 100 miles northwest of Cushing. Crude oil stored in facilities near Cushing is used to settle futures contracts traded on the New York Mercantile Exchange. As of Oct. 2, 53 million barrels was in storage there, according to the U.S. Energy Information Administration. Bob Noltensmeyer, emergency manager for the city of Cushing, said he hadn’t received reports of significant damage although there were “shattered nerves.” “This one was pretty strong,” he said. “The whole house shook.” The U.S.G.S. also reported a 3.7 magnitude quake about 13 miles southwest […]