High Quality Content by WIKIPEDIA articles! The 2006 Hawaii earthquake was an offshore earthquake occurring 10 km (6 miles) southwest from Puak?, Hawai'i, United States, on Sunday October 15, 2006 at 7:07:49 AM local time (17:07:49 (UTC)). It measured 6.7 on the Richter scale, and was located at 19°52?41?N 155°56?06?W? / ?19.878°N 155.935°W? / 19.878; -155.935, at a depth of 38.9 km (24.2 miles). It produced several aftershocks, including one that measured a magnitude of 6.0 seven minutes after the main shock. The Pacific Tsunami Warning Center measured a four-inch (102 mm) tsunami on the coast of the Big Island.