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A magnitude 3.1 earthquake shook Berkeley and the East Bay Thursday morning, according to preliminary information from the U.S. Geological Survey<\/a>.<\/p>\n Its epicenter was in the center of the UC Berkeley campus, just south of the Advanced Light Source building.<\/p>\n The earthquake was recorded at 9:23 a.m., according to the USGS, with a depth of 5.8 miles.<\/p>\n Earthquakes are a good reminder to be prepared. The city of Berkeley provides guidance on\u00a0what to do before, during, and after an earthquake<\/a>. Free disaster readiness, basic first aid training Community Emergency Response Team (CERT) training classes, funded by FEMA and administered by the Berkeley Fire Department will be held later this year<\/a>.<\/p>\n Serendipitously, this quake hit an hour before the international Great ShakeOut drill<\/a>, scheduled for around 10:20 a.m. Thursday. Nearly 500,000 people were registered to participate in Alameda County.<\/p>\n During the drill, participants are urged to practice dropping to the ground, taking cover by getting under a sturdy desk or table, and holding on until the shaking stops. Those who\u2019ve signed up for MyShake<\/a>, receive a test drill through the app. <\/p>\n Thursday morning\u2019s quake comes nearly a month after a much stronger 4.3 magnitude quake<\/a> centered in Elmwood that had force enough to break windows and knock items off shelves.<\/p>\n