Active lava and hundreds of earthquakes at Kīlauea have forced immediate trail closures at Hawaii Volcanoes National Park as the volcano’s 54th eruption continues.
The National Park Service temporarily shut the Halemaʻumaʻu Trail and part of the Byron Ledge Trail after continued inflation and rising seismicity at the summit of the Big Island’s Kīlauea volcano. Park officials said the safety closure covers 1.3 miles of trail.
FOX Weather reported the move as Kīlauea stayed restless, with renewed vent activity, fresh ground cracks, and more than 200 earthquakes felt at the summit over the past week. Viewing areas on the Keanakākoʻi side of the caldera were already closed for safety the week before.
Visitors now face a tighter map of what they can reach on foot while scientists track magma moving beneath the caldera floor. The U.S. Geological Survey kept the volcano at ORANGE on the aviation color code, the second-highest level on its four-tier scale, as of Thursday.
Hawaii Volcanoes NPS posted the notice after monitoring showed the summit still inflating and shaking. The agency tied the decision straight to conditions on the ground, not to a distant forecast.
In its October 8, 2026 update, the park service account laid out the scope in plain terms:
"Safety closures in place: Halemaʻumaʻu Trail and part of Byron Ledge Trail are temporarily closed due to continued inflation and increased seismicity at the summit of Kīlauea volcano. The trail closure is a total of 1.3 miles. Viewing areas on the Keanakākoʻi side of the caldera closed for safety last week."
That sequence matters. Officials first pulled people back from Keanakākoʻi viewing areas. Then they extended the shutdown to the Halemaʻumaʻu and Byron Ledge routes when the summit kept deforming and quaking.
No injuries or property damage beyond the closures appear in the available park and survey updates. The stated reason is visitor safety while the caldera stays active.
The Hawaiian Volcano Observatory and park monitors recorded more than 200 earthquakes at the summit over the past week. A USGS statement on Thursday narrowed the latest count.
"In the past 24 hours, there were 6 shallow earthquakes located across the summit region of Kīlauea."
Field crews on October 6, 2026 documented new ground cracks cutting through recent tephra on the northern part of the Kīlauea caldera floor, also called Kaluapele. The largest new crack measured about 15 centimeters, six inches, wide. Other new cracks reached roughly the same width.
Some cracks that formed between September 30 and October 1 were still steaming and warm when checked with a thermal camera on October 6. Readings hit about 60 degrees Celsius, or 140 degrees Fahrenheit. USGS notes the area has held warm, steaming cracks for decades, and crews found no sign of magmatic gas tied to the recent intrusive activity.
Photos credited to M. Patrick of the USGS show sharp crack edges, delicate suspended roots, and active vents visible in the same frame. The images underline a simple point: the ground is still breaking as magma shifts below.
USGS said lava flows erupted from the north and south vents in Halemaʻumaʻu on the night of September 30. At the same time, magma was making a new path below the surface of the caldera.
Earlier in the month, the system opened a wider door. From September 14 to 16, six vents opened on and below the northwest wall of Halemaʻumaʻu. USGS described what that pattern suggests:
"The opening of six vents on and below the northwest wall of Halemaʻumaʻu on September 14 to 16 suggests that magma is able to intrude into pre-existing weak, fractured areas along the northern and western boundaries of Halemaʻumaʻu without having to create new space."
In other words, the molten rock is exploiting fractures that already exist. It does not always have to smash open brand-new pathways. That helps explain the swarm of earthquakes and the new cracks mapped on the northwestern part of the caldera.
Earlier this week the survey also issued a volcanic activity notice after renewed spattering at two vents following activity beneath the summit. Kīlauea remained at the ORANGE aviation color code through the Thursday update.
The current unrest is framed as the 54th eruption of Mount Kīlauea. Attention has already turned to whether a 55th episode of lava fountaining comes next.
USGS scientists say they cannot forecast when, or if, that 55th episode will occur. The instruments show inflation, seismicity, vent spatter, and crack growth. They do not hand out a clock for the next major fountain.
FOX Weather highlighted the watchfulness in an October 2, 2026 post built around a timelapse of intermittent overflows:
"IMMINENT ERUPTION: Check out this timelapse of Hawaii's Kīlauea. The volcano experienced several intermittent overflows like this throughout the morning, showing signs that its 55th eruption episode could be near. Stick with FOX Weather for all the latest developments."
That is a media alert based on visible overflow behavior. It is not the same as a formal USGS prediction. The survey’s own line remains cautious: the next fountaining episode is not timed.
For hikers, the practical result is smaller access near the most active ground. Halemaʻumaʻu Trail and part of Byron Ledge Trail are off-limits. Keanakākoʻi-side viewing stayed closed from the prior week. The combined trail hit is 1.3 miles, per the park service.
For aviation, ORANGE means the volcano is still producing enough unrest to matter for flight planning on the second-highest tier of the USGS scale. The color code sat there as of the Thursday statement that also logged the six shallow quakes in 24 hours.
The agencies in the middle of this are the National Park Service at Hawaii Volcanoes National Park and the USGS Hawaiian Volcano Observatory. Their shared posture is monitor, measure, and keep people off unstable ground while magma keeps pressing into weak zones under Halemaʻumaʻu.
Timeline anchors already on the record run from the six-vent opening on September 14, 16, through the September 30 lava flows and crack formation, the multi-day earthquake tally above 200, the October 6 field measurements, and the October 8 park closure notice. Relative markers, “last week,” “earlier this week,” “Wednesday,” “Thursday,” “past 24 hours”, fill the gaps between those dated posts and statements.
When the ground splits six inches wide and the summit racks up hundreds of quakes, closing the trail is not red tape, it is the bare minimum of taking nature’s warning signs seriously.
