(NBC NEWS) Hawaii and parts of California were on tsunami alert early Thursday after a huge 8.3-magnitude earthquake struck off the coast of north Chile.
It prompted the U.S. Coastguard to urge the public in Hawaii to use "extreme caution" in waters around the main islands. People should prepare for "strong currents and surf throughout the main Hawaii Islands," they said.
The tsunami was due to start in Hawaii at 3.11 a.m. local time (9.11 a.m. ET) and in California at 4.46 a.m. local time (7.46 a.m. ET), the National Tsunami Warning Center said.
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