Overview

• Two vents at Halemaʻumaʻu are actively fountaining within the summit crater, with primary hazards from sulfur dioxide, ash and windblown volcanic glass.
• Another short-lived episode is anticipated within days, which would be the 31st since December, and recent events have typically lasted about 10 to 12 hours.
• USGS reports roughly 5 cubic yards (3.8 m³) of magma per second feeding a lower chamber that inflates the system before each burst.
• Lava fountain heights have trended lower recently, which a University of Hawaii at Hilo geologist says likely reflects vent widening that reduces pressure.
• Public viewing continues through three USGS livestream cameras, and park officials note rising visitation and urge sign-ups for alerts and strict adherence to safety guidance.