The Kīlauea Episode 50 forecast from USGS HVO points to a fountaining window between June 23 and June 27, with June 25–26 most likely. In its June 17, 2026 daily update, the Hawaiian Volcano Observatory says the Halemaʻumaʻu summit eruption is paused after Episode 49, but re-inflation, vent glow, and degassing point toward another fountaining episode. Big Island travelers landing this week should keep an eye on the summit.

That does not mean lava will be visible on a schedule. Kīlauea’s current eruption has been running as a stop-start series since December 23, 2024: lava fountains for hours, then a pause while the summit reservoir re-pressurizes, then another fountain. The useful visitor takeaway is timing. If your Big Island trip falls in the last week of June, build flexibility into any Hawaiʻi Volcanoes National Park day, keep the official webcams open, and avoid treating the forecast like a guaranteed showtime.

As of the June 17 HVO update, Kīlauea sits at Volcano Alert Level ADVISORY and Aviation Color Code YELLOW. The volcano is not erupting at the surface, but the summit is inflating again after Episode 49 ended on the evening of June 14. HVO reports intermittent glow from the south vent, low-frequency tremor pulses, and renewed tilt recovery at the Uēkahuna summit tiltmeter.

Episode 49 itself was short and sharp. According to the USGS HVO update record, it followed about five hours of precursory activity, lasted roughly 7.5 hours, drove fountains close to 700 feet (210 meters) at peak, and covered an estimated 40–50 percent of the crater floor with fresh lava. HVO reported that most tephra fell inside closed park areas, with no tephra observed at the main public viewing areas or ash in nearby communities. That matters because it frames the current risk: the next episode is likely another summit-contained event, but fountaining can quickly change air quality and tephra conditions around the caldera rim.

Check the webcams before you drive. The USGS Kīlauea webcams and USGS YouTube livestreams are the fastest way to see whether fountaining has started. During a pause, you may see glow, steam, or nothing obvious at all. During active fountaining, the summit cameras make the decision simple.

Use the park conditions page as the day-of source. Hawaiʻi Volcanoes National Park remains the visitor source for open overlooks, air-quality closures, and any Crater Rim Drive changes. Start with the NPS current conditions page before leaving Hilo, Kona, or Volcano Village. Overlooks can close for tephra cleanup, poor air, crowd control, or safety even when the wider park is open.

Best base camp: Volcano Village if you want to react quickly. Hilo sits about 30 miles and roughly 45 minutes from the park entrance, according to the NPS directions page. Kona is a much longer commitment, around 96 miles and 2 to 2.5 hours each way without major stops. If you are staying on the Kona side, make the eruption a full-day or overnight plan rather than a quick evening detour.

The best public sightlines into Halemaʻumaʻu are typically Uēkahuna, Keanakākoʻi Overlook, and other open sections of the Crater Rim corridor. Which one wins depends on wind, parking, crowding, and exactly which vent is active. At night, glow can be visible from multiple rim viewpoints during active fountaining, but the closest safe overlook is not always the best overall experience if air quality is poor or if the crowd has already filled the lot.

The park entrance fee is $30 per private vehicle, valid for seven days. America the Beautiful and other accepted federal passes cover entry. Per the NPS hours page, the park stays open 24 hours, though visitor centers and services run on much shorter schedules. Bring water, warm layers, a headlamp, and patience if you are aiming for a night-viewing window.

Volcanic gas and vog. HVO notes that sulfur dioxide emissions continue even during pauses. SO₂ turns into vog downwind, and people with asthma, COPD, heart disease, or other respiratory issues should check AirNow for Hawaiʻi Volcanoes National Park before committing to a rim visit. Wind direction decides who feels it.

Tephra and Pele’s Hair. Lava fountains create small glassy fragments: ash, pumice, scoria, Pele’s Hair, and reticulite. HVO says larger particles fall close to the vents, but lighter fragments can travel farther depending on fountaining strength and wind. Keep car windows closed if material is falling, do not rub your eyes, and minimize exposure if you have respiratory sensitivity.

Closed areas are closed for a reason. The current eruption is inside a closed section of Hawaiʻi Volcanoes National Park. The caldera rim around Halemaʻumaʻu has unstable ground, cracks, rockfall risk, hot material, and deep tephra fields. Stay behind barriers and follow NPS closures even if you see other people pushing past them.

For travelers, the June 23–27 forecast window is a reason to monitor, not a reason to reschedule a whole vacation. Best case: you happen to be on island, the webcams show fountains, and the NPS conditions page confirms an open safe viewpoint. Worst case: you drive two hours to the park during a quiet pause and still get a worthwhile volcano day with steam vents, crater views, and fresh geologic change below the rim.

Use three sources in this order: the USGS Kīlauea update for the science and alert level, the NPS conditions page for what visitors can actually access, and our Kīlauea lava viewing update for practical planning context around where the eruption is and what that means for a Big Island itinerary.