cenc measured a magnitude 5.8 at 11:34 on July 28 in Xinghai County, Hainan
Prefecture, Qinghai (35.35N, 99.58E), depth 10 km. Qinghai registered two M5+
shocks with epicentres roughly 1 km apart, separated by 18 minutes; tremors were
felt in Xining and Lanzhou. China Earthquake Administration has activated a
level-4 emergency response.