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On October 17, at 10:17 a.m., HST, thousands of Hawai‘i residents took part in the state’s first Great Hawaii ShakeOut. The Hawaiian Volcano...

Thermal image sequence of summit lava lake motion.

A magnitude 3.8 earthquake occurred on October 21, 2013 at 10:04 PDT 18 km (11 miles) SE of the town of Mammoth Lakes in eastern California.

Lava flows at forest boundary northeast of Pu‘u ‘Ō‘ō.

The Earth's surface, oceans, and atmosphere are readily accessible to direct exploration.

The Hawaiian Volcano Observatory will remain operational during the lapse of federal government appropriations.

The Hawaiian Volcano Observatory will remain operational during the lapse of federal government appropriations.

This week, the Hawaiian Volcano Observatory is saying goodbye to two good friends: Jessica Johnson and Ben McLeod. Jess and Ben arrived in Hawai‘i in...

HAWAI‘I ISLAND, Hawaii — Hawaii’s long history of destructive earthquakes and actions that residents can take to reduce injury during the next one...

Get ready! The Great Hawaii ShakeOut will "rumble" across the islands at 10:17 a.m., HST, on October 17, 2013.