4.0 Eathquake off Mauna Loa, NO tsunami expected

October 3, 2010, 10:03 AM HST · Updated October 3, 10:03 AM
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A 4.0 earthquake occurred off the Southeastern flank of Mauna Loa on the Big Island this morning (Sunday October 3, 2010).  The quake occured at 9:39 a.m. at the 19.2 North and 155.5 West coordinated.  Officials with the Pacific Tsunami Warning Center in Ewa Beach say no tsunami is expected, however, some areas may have experienced shaking.

Magnitude4.0 – duration magnitude (Md)
TimeSunday, October 3, 2010 at 9:39:28 AM (HST)
Sunday, October 3, 2010 at 19:39:28 (UTC)
Distance fromPahala – 5 km (3 miles) W (278 degrees)
Na`alehu – 17 km (11 miles) NNE (19 degrees)
Mauna Loa Summit – 31 km (19 miles) SSE (165 degrees)
Kailua – 68 km (42 miles) SE (134 degrees)
Coordinates19 deg. 12.7 min. N (19.212N), 155 deg. 31.8 min. W (155.531W)
Depth36.3 km (22.6 miles)

Map Courtesy USGS.

(Posted by Wendy Osher)

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