Sirens blaring across parts of Hawaii urged residents to seek higher ground, as a tsunami -- triggered by a sizable 7.7-magnitude earthquake in western Canada -- headed toward them.
Waves between 3 and 7 feet are expected to lash the islands, beginning about 10:28 p.m. local time Saturday (4:28 a.m. Sunday ET), the Pacific Tsunami Warning Center said.
"Basically this tsunami is pointed right at us," said Gerard Fryer, senior geophysicist at the center.
The impact could last for hours.
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