A preliminary 4.1 magnitude earthquake followed by a preliminary 4.5 magnitude struck in Northern California, according to the United States Geological Survey. According to the USGS, a second earthquake, with a preliminary magnitude of 4.5, hit a minute later and was centered in the same area. Watch NBC Bay Area News free wherever you are WATCH HERE WATCH HEREThe temblors come after the Covelo area was rattled by a 4.0 magnitude earthquake on Tuesday. BAY AREA QUAKE CENTRALYou can take steps to plan and prepare for the next big one. Access our Bay Area Quake Tracker, the latest earthquake stories, extensive quake prep checklists, videos and many other disaster preparedness resources all in one place: NBCBAYAREA.COM/QUAKES