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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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Map of Flow Field

Recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of Flow Field

Recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of Flow Field

Recent changes to Kīlauea’s East Rift Zone lava flow field.

February 15, 2018—Why are HVO scientists talking so much about Mauna Loa?

Mauna Loa, Earth's largest active volcano, has erupted 33 times since 1843, producing the lava flows shown in black. 

Map of Flow Field

Recent changes to Kīlauea’s East Rift Zone lava flow field

January 05—Thermal map of flow field

This map shows a thermal map over the Episode 61g lava flow.

Map of Flow Field

Recent changes to Kīlauea’s East Rift Zone lava flow field.

Map of post-1823 lava flows erupted from Mauna Loa

Slope map of Mauna Loa, including lava flows erupted since 1823 (gray), showing the approximate number of hours or days it took for a flow to advance from the vent location to the ocean or maximum reach of a flow. 

2012—Island of Hawai‘i map, showing Mauna Loa

Island of Hawai‘i map, showing Mauna Loa and the other four volcanoes that make up the island. Mauna Loa structural features include summit caldera, rift zones, radial vents, and historical lava flows.

Earthquakes at Mauna Loa from June 2013 to June 2015

Earthquakes at Mauna Loa from June 2013 to June 2015. Green circles are 0-5 km (0-3 mi) deep and similar to ones prior to 1975 and 1984 eruptions, but cluster of 5-10 km (3-6 mi) deep quakes missing.