Full Breakdown
Kilauea Volcano's Episode 35: Record Lava Fountains Erupt
10/18/2025, 9:23:41 PM
Overview of the Eruption
On October 17, 2025, Kilauea volcano on Hawaii's Big Island commenced its 35th eruptive episode, marked by spectacular lava fountains from both the north and south vents within the Halema‘uma‘u crater. The eruption began at approximately 8:05 p.m. HST, with the north vent producing initial fountains that quickly escalated to heights of about 500 feet. By 10:11 p.m., the south vent reached a record height of nearly 1,500 feet, while the north vent peaked at around 1,100 feet, setting new records for this eruption cycle.
Key Details of the Eruption
The U.S. Geological Survey (USGS) reported that the eruption produced sustained high fountains of lava, with the plume of gas extending over 16,000 feet above ground level. Tephra, including fine ash and volcanic glass known as Pele's hair, was observed falling in areas downwind, particularly along Highway 11 southwest of the vents. The eruption is characterized by rapid deflation and reinflation of the summit region, a pattern reminiscent of previous eruptions, such as the 1983–86 Pu‘u‘o‘o eruption.
Impact and Safety Measures
Authorities have issued warnings regarding the potential health impacts of volcanic emissions and tephra. Residents and visitors are advised to avoid areas affected by volcanic gas and fine particles, which can cause skin and eye irritation. The Hawaii County Civil Defense has emphasized the importance of taking precautions, especially for individuals with respiratory conditions.
Official Statements & Responses
The USGS maintains that all eruptive activity is confined to the Halema‘uma‘u crater within Hawai‘i Volcanoes National Park, posing no immediate threat to nearby communities. The Volcano Alert Level remains at WATCH, and the Aviation Color Code is set to ORANGE, indicating heightened volcanic activity. Scientists expect that this episode may be relatively short-lived, potentially lasting less than six to eight hours, similar to the previous episode.
Criticism & Opposition
While the eruption has drawn attention for its visual spectacle, some local residents express concerns about the long-term impacts of frequent volcanic activity on air quality and health. The presence of vog (volcanic smog) and tephra can disrupt daily life, prompting calls for more comprehensive monitoring and public health advisories.
Conflicting Reports & Gaps
There is a consensus among sources regarding the eruption's start time and the heights of the lava fountains; however, some discrepancies exist regarding the exact measurements of the plume and the duration of the episode. The USGS continues to monitor the situation closely, and updates will be provided as more data becomes available.
What's Next
As Kilauea continues to exhibit signs of volcanic activity, further episodes of lava fountaining are anticipated. The USGS will issue a Volcano Activity Notice when sustained high lava fountaining ceases, marking the conclusion of Episode 35. Continuous monitoring will remain essential to ensure public safety and provide timely updates on volcanic activity.
Verbatim Quotes
- “These would be the highest single fountain and highest pair of fountains seen during this eruption,” — Hawaiian Volcano Observatory
- “Avoid the area if you are sensitive to respiratory condition,” — Hawaii County Civil Defense
- “The ongoing eruption sequence, active since December 23, 2024, is characterized by short-lived but intense episodes of fountaining separated by pauses lasting several days to a week.” — USGS Hawaiian Volcano Observatory
