Mauna Loa is Earth’s largest active volcano and covers just over half of the Island of Hawaiʻi.

This page provides resources to help you understand Mauna Loa eruption hazards, make a plan, and access current information.

• About volcanoes (Ready.gov)

Also available in: Arabic | English | Español | Français | Haitian Creole | Japanese | Korean | Russian | Tagalog | Vietnamese | Chinese, Simplified

• Be Prepared: Volcano Tip Sheet (Ready.gov)
• FAQs about Mauna Loa eruption
• Mauna Loa images and videos

• USGS Mauna Loa Eruption Webpage
• Hawaiʻi Interagency Vog Information Dashboard