“Over the past few days there has been a significant earthquake swarm at Yellowstone,” says reader Murray Stafford. “This morning there were over 50 earthquakes in the past 24 hours. Now there is over 70! If this thing blows, we are toast!”
Oops. As of Wednesday evening the count had risen to 83.
Thanks to Murray Stafford, Science Teacher in Barnesville, Ohio, for this info
The following interactive map from the US Geological Survey (USGS) doesn’t seem to have been updated lately, because it shows only 64 earthquakes in the past several days.