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Update, 3:30 PM ET: A warning has been issued for a small, localized tsunami. No impacts are expected for the United States. The earthquake's magnitude has been revised to a 7.4.

An earthquake has struck the southeast Pacific Kermadec Islands region. The preliminary magnitude was 7.6, according to the U.S. Geological Survey. No tsunami warning has been issued. Details from the USGS:

Date-Time:

Friday, October 21, 2011 at 17:57:17 UTC

Saturday, October 22, 2011 at 05:57:17 AM at epicenter

Location: 28.941