May 27, 2026—Kīlauea summit eruption reference map

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This reference map depicts the Kīlauea summit eruption within Halema‘uma‘u crater that began on December 23, 2024. Most of the data for this map were collected during a USGS Hawaiian Volcano Observatory helicopter overflight on May 22, 2026, so the provided statistics are reflective of the entire eruption through episode 47 on May 14–15.

Eruptive vent and tephra cone statistics through episode 47: 

• Vent elevations: 1,070 meters (3,510 feet)
• Vent level below crater rim: 70 meters (230 feet)
• Vent height to surrounding lava: 40 meters (130 feet)
• Cone's peak elevation: 1,185 meters (3,890 feet)
• Cone's height to crater rim: 45 meters (150 feet) 

Lava statistics through episode 47: 

• Average lava elevation: 1,005 meters (3,297 feet)
• Average lava thickness: 88 meters (289 feet)
• Maximum lava thickness: 165 meters (540 feet)
• Total lava extent: 435 hectares (1,075 acres)
• Total lava volume: 274.3 million cubic meters (72.5 billion gallons)