FORT WORTH -- First it was a devastating hailstorm in North Texas. Then came the heat. And on Sunday, Texas experienced two earthquakes, bringing the total to three quakes in the state over the weekend.No injuries or major damage was reported from the quakes.The U.S. Geological Survey reported that a 3.6-magnitude quake occurred at 12:46 p.m. Sunday four miles northeast of Keene and 21 miles south of Fort Worth.Initially, the quake was measured at 3.5."We got more data from it and it was updated to a 3.6," said geophysicist Paul Caruso of the geological agency in Colorado.As of 6 p.m. Sunday, the agency had received 263 reports from residents who felt the North Texas quake Sunday. Caruso said the callers reported feeling the quake as far as Wichita Falls.Residents said the ground shook, items were knocked over, and a few windows were broken.Caruso said a 3.6 quake could cause items to tumble, chandeliers to swing and waves to form in swimming pools.A 5.5 quake or stronger could cause heavy damage to buildings and casualties, Caruso said.Officials could not say what caused the quakes.Earlier in the day, a 3.4 magnitude quake occurred at 3:55 a.m. in Tilden, in South Texas about 40 miles west of Beeville and south of San Antonio.On Saturday morning, a 2.1 magnitude quake was reported just before 1 a.m. near Keene.The quake initially was reported as a 2.6 but was revised to a 2.1, the agency said.Since June 4, Texas has had three other quakes.On June 4, a 2.3 quake was reported near Cleburne, followed by a 3.2 quake near Burleson on June 15. A 2.1 quake near Timpson in East Texas occurred June 16.Domingo Ramirez Jr.,817-390-7763Twitter: @mingoramirezjr.