M1.5 recorded. Many more smaller events have been detected and will be quantified by analysts in the near future. The larger events continue to be felt in the Old Faithful area of Yellowstone National Park. Over 1800 earthquakes have now been recorded since January 17, 2010, making this swarm longer (in time) and with more earthquakes than last year's swarm beneath Yellowstone Lake (December '08/January '09). The total seismic energy released is still somewhat less. The largest recorded swarm at Yellowstone remains the Fall 1985 swarm, located in a similar location in the NW corner of the Yellowstone Caldera. Hint it is in the number of quakes." />