Jackson, WY – A series of earthquakes woke people up, but caused no damage in northwestern Wyoming this morning. The first quake was the strongest, registering a magnitude of 4.7 shortly before one o'clock in the morning. The epicenter was about 19 miles east-northeast of Jackson. The U-S Geological Survey's John Minsch says that was followed by quakes ranging from 3.7 to 4.1 magnitude. The last one came around 2:30 a.m. A Teton County Sheriff's Department spokeswoman says her office got a lot of calls from people awakened by the tremors, but no damage was reported.