Overview

• Episode 34 ended at 07:03 HST on October 1 after about six hours of activity from two vents within Halemaʻumaʻu crater.
• Fountains reached about 100 m from the north vent and up to 400 m from the south vent, feeding high‑volume channelized flows across the western crater floor.
• The event produced roughly 9 million cubic meters of lava with a peak effusion rate near 382 cubic meters per second, nearly double many prior bursts.
• Tiltmeters recorded about 26 microradians of deflation during fountaining followed by inflation after the pause, and HVO anticipates another episode but not within the next week.
• Activity remains confined to the summit inside Hawaiʻi Volcanoes National Park with no threat to homes or airports, as elevated SO₂ and widespread Pele’s hair create downwind vog and visitor hazards under WATCH/ORANGE alerts.