Swarm is now the second largest recorded

The rate of earthquake occurrence in the Madison Plateau area is now at background levels. As of February 11, 2010 4:00 PM MST there have been 1,805 earthquakes located. The swarm began January 17, 2010 around 1:00 PM MST about 10 miles (16 km) northwest of the Old Faithful area on the northwestern edge of the Yellowstone Caldera. Swarms have occurred in this area several times over the past 30 years. Visual observation of landforms and geothermal features by Yellowstone National Park personnel did not show any changes that could be attributed to the earthquakes.
This swarm is now the second largest recorded swarm at Yellowstone. It was longer (in time) and included more earthquakes than last year's swarm beneath Yellowstone Lake (December '08/January '09). Calculations, by the University of Utah Seismology Research Group, of the total seismic energy released by all the swarm earthquakes corresponds to one earthquake with an approximate magnitude of 4.4. The largest recorded swarm at Yellowstone remains the Fall 1985 swarm, which was located in a similar location, in the NW corner of the Yellowstone Caldera.
The swarm included 14 events with a magnitude larger than 3, 136 events of magnitude 2.0 to 2.9, and 1,655 events with a magnitude of 0.0 to 1.9. The largest events were a pair of earthquakes of magnitude 3.7 and 3.8 that occurred after 11 PM MST on January 20, 2010. Both events were felt throughout the park and in surrounding communities in Wyoming, Montana, and Idaho.

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Bongo says ... on Saturday, Feb 13 at 12:20 PM

It was just my stomach growling from hunger. No need to worry.

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