Officials are closely monitoring a resurgence in volcanic activity at Kīlauea, a major tourist attraction in Hawaii. This has resulted in hundreds of earthquakes and potential rockfalls, leading to temporary trail closures.
Recent Developments
The U.S. Geological Survey (USGS) issued a volcanic activity alert for Kīlauea earlier this week. It cited new spattering at two vents after seismic movements beneath the summit. In response, the National Park Service (NPS) temporarily closed the Halemaʻumaʻu Trail and part of Byron Ledge Trail due to increased seismic activity. The closures impact a total of 1.3 miles of trails.
Seismic Activity
Over the past week, more than 200 shallow earthquakes occurred beneath Kīlauea’s summit. A magnitude-3.4 earthquake on September 30 caused minor rockfalls along the caldera’s north wall. Kīlauea is currently at an ORANGE aviation color code, indicating heightened volcanic activity and potential eruption threats. New cracks in the caldera floor were reported following intrusion activity from September 30 to October 1.
Scientists reported: “Forecast windows for episode 55 fountaining can no longer be modeled due to changes in conditions.”
Potential Hazards
Officials warn of several hazards, including possibly harmful gas emissions and small volcanic fragments that may cause skin and eye irritation. Windy conditions might remobilize these fragments, posing additional risks. Visitors are advised to avoid these hazards and closed areas, as unstable cliff edges may collapse unexpectedly.
Kīlauea’s History
Kīlauea, one of the most active volcanoes globally, has erupted many times since 1952. The USGS noted nearly continuous eruptive activity along the East Rift Zone from 1983 to 2018. An eruption has been intermittently active within the Halema‘uma‘u crater at the summit since December 2024.
During eruptive periods, Hawaiʻi Volcanoes National Park experiences increased tourism, with over 1.8 million recreational visits in 2025. The surge indicates continued interest in viewing Kīlauea’s volcanic activity. For safety reasons, visitors must follow park guidelines and avoid restricted areas.
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