Watching for the big one

(KTVB) With three earthquakes in less than a week, Challis, Idaho has experienced an unusual amount of seismic activity, even for a community built near a fault line.

Since March 24, scientists have measured 21 earthquakes in the area, with the largest one last Saturday, a 4.9 magnitude quake.

With so many quakes in such a short period, the University of Utah calls the cluster interesting, and sent a crew to the area to study it.

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