Earthquake Prompts Tsunami Warning See Illustration
The following is an EXCERPT from the linked article. I am
posting it here to illustrate how a tsunami would propagate across the
Pacific Ocean (see illustration below). I also found the bolded statements interesting, particularly the mention of the 30 foot rise in the ocean near the epicenter of the quake. See article for more details. This is just an excerpt for CF reading.
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"A magnitude 7.9 earthquake in the Gulf of
Alaska triggered a series of tsunami alerts early Tuesday from southern
Alaska down the western coast of North America, prompting warnings in some low-lying communities for people to seek higher ground.
But initial fears that such a massive tremor could unleash destructive waves that could hit coastal Alaska or
Hawaii or ripple farther out subsided within four hours. There were no immediate reports of injuries or property damage.
A tsunami watch issued early Tuesday for coastal areas from Washington state to California was canceled nearly three hours after the quake. Tsunami watches were also eventually canceled for the Canadian province of British Columbia and Hawaii, as well as advisories for southern Alaska after 4 a.m. local time (8 a.m. ET), according to the National
Weather Service's National Tsunami Warning Center.
A buoy located 188 nautical miles southeast of Cordova, Alaska, recorded a wave of about 30 feet around the time of the earthquake, according to NOAA data. But the report appeared to be an anomaly and it was unclear if it was related to the quake.
"We know one of the buoys showed a significant water rise right next to where the earthquake happened, but the next buoy didn't seem to experience that," NBC News meteorologist Bill Karins said. "We don't know yet what this means. It could have malfunctioned. We just don't know at this stage. It's too early to tell."
https://www.nbcnews.com/news/us-news...hquake-n840111