Hawaii’s Kilauea volcano erupted on November 9, 2025, producing lava fountains that soared up to 1,100 feet high during a nearly five-hour event, marking the 36th episode in an ongoing series of eruptions that began in December 2024.
The eruption commenced in the morning hours of November 9 and continued until approximately 4:16 p.m. local time, according to the United States Geological Survey (USGS). Lava fountains from the south vent reached heights between 1,000 and 1,100 feet, creating a dramatic spectacle confined to the Halemaʻumaʻu crater within Hawai’i Volcanoes National Park. This area remains closed to the public due to volcanic hazards, ensuring no immediate threat to populated regions on Hawaii’s Big Island.
Lava flows from this episode covered between 60 and 80 percent of the crater floor, significantly altering the volcanic landscape. The USGS reported that the eruption was contained within the park’s restricted zones, with volcanic gas emissions, including sulfur dioxide, posing the primary concern. Despite the intense activity, authorities confirmed no injuries or property damage, highlighting the effectiveness of ongoing safety measures.
This event is part of an episodic eruption series that started on December 23, 2024, characterized by frequent, short-lived fountaining episodes not seen since the 1983–1986 Puʻuʻōʻō eruption. The USGS notes that these episodes typically last less than a day and are separated by pauses of several days to weeks, providing valuable insights into volcanic behavior. The current pattern has resulted in 36 distinct eruptions, with scientists monitoring each for data on lava output and eruption dynamics.
In the previous episode, number 35 on October 17, Kilauea produced even higher lava fountains, reaching up to 1,500 feet from the south vent and 1,100 feet from the north vent. That eruption generated approximately 13 million cubic yards of lava, with an average eruption rate of 500 cubic yards per second, underscoring the volcano’s powerful and variable energy. Comparisons between episodes help researchers understand the factors influencing fountain heights and durations.
Hazards associated with these eruptions extend beyond lava and gas to include volcanic fragments like ash, pumice, and Pele’s hair—fine strands of volcanic glass that can be carried by wind over 10 miles from the vent. The USGS maintains a Code Orange volcano watch, indicating that eruptions are likely or occurring with minor ash fall, and advises the public to stay informed through official channels. Road closures and air quality advisories are common during such events.
The ongoing activity is closely monitored by the Hawaiian Volcano Observatory using seismic sensors, gas detectors, and satellite imagery. While the eruptions have been managed without major incidents, the potential for sudden changes requires constant vigilance. Future episodes are expected to follow the current pattern, with scientists prepared to issue warnings and updates as needed to protect public safety.
The recurrent eruptions at Kilauea highlight the dynamic forces shaping the Hawaiian islands and serve as a reminder of the balance between natural wonder and risk. They attract global scientific interest and public fascination, emphasizing the importance of proactive monitoring and community preparedness in volcanic regions.
