News

What does cause an eruption at volcanoes like Yellowstone? To answer this question, we look at small crystals that formed in erupted volcanic rocks! 

The U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) recorded a magnitude-4.5 earthquake just offshore of the Island of Hawai‘i on Monday...

Water at bottom of Halema‘uma‘u continues to rise

Slow rise of water at the bottom of Halema‘uma‘u continues

HVO geologists examine road cuts on Hwy 132

Water ponds in Halema‘uma‘u now joined

The recent appearance of water at the bottom of Halema‘uma‘u, a crater at the summit of Kīlauea Volcano, has attracted wide attention and generated...

Another view of Halema‘uma‘u and the water ponds

Water level at bottom of Halema‘uma‘u continues to slowly rise

More imagery from August 4 field observations of Halema‘uma‘u