Nearly 100 earthquakes rattled Kīlauea this week, forcing temporary park closures as the 53rd eruption episode since December sent lava fountains soaring about 500 feet.
Parts of Hawaiʻi Volcanoes National Park shut down Thursday after the swarm hit beneath the summit. FOX Weather reported the National Park Service closed the Keanakākoʻi area to protect the public from the quakes and rising volcanic activity.
The largest quake registered magnitude 3.4 at 9:52 p.m. HST Wednesday. Strongest shaking ran from about 8 p.m. Wednesday through 3 a.m. Thursday. After that, summit inflation leveled off and the earthquakes eased.
Officials tied the closures directly to safety. The shutdown covered Old Crater Rim Drive, the overlooks near Keanakākoʻi Crater, and the Crater Rim Trail to Keanakākoʻi. The Devastation Trail parking lot stayed open.
Kīlauea has stayed restless since late December. This marked the 53rd eruption episode in the current sequence that began December 23, 2024. Lava fountains climbed roughly 500 feet during the latest burst.
Earlier activity in the same stretch already showed the mountain’s punch, including when Mount Kilauea's 51st eruption threw lava even higher and forced ash concerns across the island.
Tuesday brought a large eruption inside the park that lofted heavy smoke plumes. One plume climbed as high as 18,000 feet. Wednesday afternoon the north vent overflowed for more than an hour and produced a small dome fountain among several overflows in a 24-hour window.
Overnight the north and south vents glowed strongly, spat intermittent spatter, and threw large flames. The west vent showed the same glow and flames. The USGS Hawaiian Volcano Observatory said a shallow intrusion of magma moved into the summit region near the existing eruption site.
That intrusion points to the 55th episode arriving soon. Webcam checks showed no new ground cracking and no lava breaking out in a fresh location, yet the system remained charged.
Seismic swarms like this one often flag deeper movement. Hawaii has seen that link before, including a magnitude 5.2 quake off the Big Island tied straight to undersea volcanic unrest.
Gas emissions rose as the next episode neared, matching imagery shared by the USGS volcanoes account. The pattern fits the recent cycle of short, intense fountaining episodes separated by quieter recharge periods.
The National Park Service acted on the earthquake count and the clear signs of unrest. Nearly 100 quakes struck the summit area in roughly a day. Closing the most exposed roads and trails cut the chance of visitors getting caught near unstable ground or sudden vent activity.
No injuries or structural damage appeared in the available details. The response stayed limited to the high-risk Keanakākoʻi sector while other park access points remained usable. That measured approach keeps people safe without shutting down the entire destination.
Volcanic crises elsewhere have shown how fast access decisions matter. When Mount Anak Krakatau erupted, the blast grounded flights and stranded tens of thousands. Quick boundaries around the danger zone prevent the same cascade here.
Kīlauea’s current run has already logged the 43rd, 48th, and 49th episodes in the same post-December sequence. Each pulse delivers tall fountains, short overflows, and then a pause while magma reloads. The overnight intrusion simply continues that rhythm.
Summit inflation flattening after 3 a.m. Thursday offered a brief calm. Earthquake rates dropped at the same time. Yet the USGS outlook stays firm: episode 55 sits close because fresh magma already sits shallow beneath the vents.
Visitors and residents on the Big Island have lived with this cycle for months. The mountain does not pause for convenience. Lava reaches hundreds of feet, smoke climbs into the flight levels, and the ground keeps shaking until the pressure eases.
Other restless peaks deliver the same lesson. Officials watching Mount Sinabung on Sumatra have repeatedly warned that a larger blast can follow quieter spells. Preparedness, not wishful thinking, is the only reliable posture.
Even the most extreme scenarios, such as a full-scale event at the Yellowstone supervolcano, start with the same basic signals: quakes, gas, inflation, and intrusion. Kīlauea is simply running the everyday version of that checklist in plain sight.
The closed trails and open parking lots show the practical line. Keep people out of the immediate hazard, leave the rest of the park available, and let the instruments track the next move. That is common-sense management when the ground itself is restless.
Nature still sets the timetable. All the monitoring and temporary gates can do is keep ordinary people clear while the mountain finishes its work.
