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3d ago

Kilauea’s 32nd Summit Episode Flares to 500 Feet and Ends After 13 Hours

Scientists link the brief outbursts to a single summit system fed by a steady magma influx.

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This image released by the U.S. Geological Survey shows the erupting Halemaʻumaʻu crater from the rim of the Kilauea caldera at the summit of the Kīlauea volcano on Tuesday, September 2, 2025, in Hawaii. ()
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Overview

  • Episode 32 began at 6:35 a.m. HST on Sept. 2 and abruptly ended at 8:01 p.m., with all activity confined to Halemaʻumaʻu crater inside Hawaiʻi Volcanoes National Park.
  • USGS measured lava fountains up to about 150 meters (500 feet), with eruptions observed from the north, south, and a mid‑crater vent.
  • A convective plume rose to roughly 2.7–6 kilometers, and officials warned of downwind sulfur dioxide and vog that can affect air quality and health.
  • USGS reported roughly 337 million cubic feet (about 12.5 million cubic yards) of lava produced, and estimated SO2 emissions on the order of tens of thousands of tons during sustained fountaining.
  • Kīlauea remains at Alert Level WATCH and Aviation Color Code ORANGE, with HVO citing a persistent magma supply near 3.8 cubic meters per second and noting recent trends toward shorter, wider fountains.