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Volcanic Maps

The USGS Volcano Hazards Program enhances public safety and minimize social and economic disruption from volcanic unrest and eruption. We accomplish this by delivering effective forecasts, warnings, and information about volcano hazards based on scientific understanding of volcanic processes. Learn more by exploring USGS volcanic maps. 

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2019—Geologic map of the central-southeast flank of Mauna Loa

"Geologic map of the central-southeast flank of Mauna Loa" (https://pubs.er.usgs.gov/publication/sim2932B)

August 15—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Wednesday, August 15.

August 11—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Saturday, August 11.

August 9—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Thursday, August 9.

August 6—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 6 am on Monday, August 6. 

August 3—Thermal map of fissure system and lava flows

This thermal map shows the fissure system and lava flows as of 12:30 pm on Friday, August 3.