2018 Hawaii earthquake
6.9-magnitude earthquake in Hawaii / From Wikipedia, the free encyclopedia
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On May 4, 2018, an earthquake with a magnitude of Mw 6.9[5] struck Hawaii island in the Hawaii archipelago at around 12:33 p.m. local time.[6] The earthquake's epicenter was near the south flank of Kīlauea, which has been the site of seismic and volcanic activity since late April of that year.[7] According to the United States Geological Survey the quake was related to the new lava outbreaks at the volcano,[8] and it resulted in the Hilina Slump moving about two feet.[9] It was the largest earthquake to affect Hawaii since the 1975 earthquake, which affected the same region,[10] killing two people and injuring another 28.[11]
UTC time | 2018-05-04 22:32:55 |
---|---|
ISC event | 611928827 |
USGS-ANSS | ComCat |
Local date | May 4, 2018 (2018-05-04) |
Local time | 12:33 p.m. HST |
Magnitude | 6.9 Mww[1] |
Depth | 5.8 km (4 mi)[2] |
Epicenter | 19.313°N 154.998°W / 19.313; -154.998 |
Type | Thrust fault |
Max. intensity | MMI VIII (Severe)[3] |
Tsunami | Up to 0.4 m (1.3 ft) in Kapoho. |
Aftershocks | 15,307 (As of 31 December 2018)[4] |
Casualties | None |
The earthquake had a maximum strength on the Mercalli intensity scale of VIII (Severe).[12] The earthquake was preceded by a smaller event, measuring 5.4, that was felt across the island and as far away as Oahu.[13]
The earthquake produced a minor tsunami that reached a maximum height of 40 cm (15.7 in.) in Kapoho, 20 cm (7.9 in.) in Hilo and 15 cm (5.9 in.) in Honuapo.[14]