Maui News

No Tsunami Threat to Hawaii Following Large Kermadec Quake

July 6, 2011, 10:09 AM HST
* Updated July 6, 2:46 PM
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By Wendy Osher

Map courtesy USGS, click image to enlarge.

There is no tsunami threat to Hawai’i following a large 7.6 magnitude earthquake in the Kermadec Islands Region shortly after 9 a.m. HST 7/6/11 (time at the epicenter was 7:03 a.m. 7/7/11, or 19:03 UTC 7/6/11).

The Pacific Tsunami Warning Center initially issued a tsunami waring for the Kermadec Islands, Tonga and New Zealand, but cancelled the warning at 9:59 a.m. HST.

The Kermadec Islands are located 571 miles South from Nuku’aloha, Tonga; and 736 miles North East of Auckland, New Zealand.

The USGS initially recorded the quake as a 7.8 magnitude tremor, but later reports showed a downgraded magnitude to 7.6.  The quake was measured at a depth of 12.4 miles.

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Again, there is no threat to Hawai’i based on historical data.

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While there is no tsunami threat to Hawai’i from this morning’s earthquake, the Pacific Tsunami Warning Center has advised that some coastal areas in Hawai’i could experience small non-destructive sea level changes or unusual currents beginning at approximately 4:00 p.m. this afternoon and lasting for several hours. Swimmers, beach goers and boaters should exercise caution during this period.

*** Supporting information courtesy USGS and Pacific Tsunami Warning Center.

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