April 15, 2026—Summary map of tephra fall after episode 44 lava fountaining at the summit of Kīlauea

This map shows the tephra fall associated with episode 44 of Kīlauea's episodic summit eruption, on April 9, 2026. Tephra is a generic word for any material erupted by a volcano that travels through the air before landing on the ground. Most tephra fall from past lava fountaining episodes has landed in the closed area of Hawaiʻi Volcanoes National Park, southwest of the eruptive vents, with several instances of tephra fall documented in other communities on the island. During episode 44 on April 9, lava fountains from the north vent in Halemaʻumaʻu at the summit of Kīlauea reached up at 240 m (800 feet). Southerly winds blowing to the north-northeast resulted in tephra fall in a narrow corridor within Hawaiʻi Volcanoes National Park, on Highway 11, and on communities to the northeast within the Districts of Kaʻū, Puna, South Hilo, and North Hilo.