Tracking the Wave

The Takeaway
Rob Williams, seismologist with the U.S. Geological Survey explains how we track tsunamis and why we can follow this one across the Pacific. However, "it's not an exact science," says Williams, even as the wave is predicted to hit Hawaii. Bill Dorman, news director at Hawaii Public Radio in Honolulu says that he hasn't seen water disturbances so far as he monitors his state.
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