Kīlauea summit is not erupting after episode 40 lava fountaining.

Kīlauea is not erupting following episode 40 on January 12, which produced lava fountains up to about 800 feet (250 m); scientists report another episode is likely about two weeks away but more data are needed to forecast.

Kīlauea is not currently erupting at the summit following a fountaining episode on January 12. That event lasted about 9.7 hours and produced lava fountains that reached roughly 800 feet (250 meters). Monitoring data show ongoing low-level activity near the vents and changes in ground tilt and seismicity that inform forecasts. The Hawai‘i Volcano Observatory remains in contact with Hawai‘i Volcanoes National Park and the Hawai‘i County Civil Defense Agency as they observe the situation. Key observations: - Episode 40 occurred on January 12 and lasted about 9.7 hours, producing fountains up to about 800 feet (250 m) and erupting an estimated 5.5 million cubic meters of lava that covered roughly half of the crater floor. - Overnight webcam views show lava flows continuing to creep on the Halemaʻumaʻu crater floor and incandescent spots near the north and south vents that are expected to persist for several days. - A series of about 22 small earthquakes occurred beneath the summit at depths of roughly 2–4 km between midnight and 3 a.m. HST; these events were not tied to changes in other monitoring datasets and were likely related to re-pressurization after episode 40. - Since the episode ended, the Uēkahuna tiltmeter (UWD) recorded about 1.5 microradians of inflation, and low-level volcanic tremor has been present. - Volcanic gas emissions have dropped from peak levels but are reported to remain in the range of about 1,000–5,000 tonnes of SO2 per day during this pause; seismicity and deformation in the East and Southwest Rift Zones remain very low and SO2 from the East Rift Zone is below detection limits. Summary: The rapid rebound in summit inflation and continuing tremor suggest another lava fountaining episode is likely, though current data are insufficient for detailed forecasting. Observations point to a likely interval of about two weeks before the next episode based on past patterns, but timing remains uncertain. HVO continues close monitoring and coordination with park and local civil defense authorities.