Tokyo, July 22 (Reporter) An earthquake with a preliminary magnitude of 4.8 on Monday struck the Japanese prefecture of Ibaraki, just northeast of Tokyo, the country's weather agency said. The temblor occurred at 10:07 a.m. local time, measuring 3 on the Japanese seismic intensity scale of 7, said the Japan Meteorological Agency. At a depth of 90 km, the epicenter was located off northern Ibaraki prefecture at a latitude of 36.8 degrees north and a longitude of 140.8 degrees east. The tremors were felt in central Tokyo, with no tsunami warnings issued...////...