Episode 25 precursory activity started within Halemaʻumaʻu on the morning of June 10. Glow and scattered spattering at the north vent changed to more continuous spattering in the early morning hours. At about 5:54 AM HST, lava overflowed the north vent cone and is currently flowing onto the crater floor. Episode 25 is forecast to begin between tomorrow (Wednesday) and Thursday. However, there is a chance that activity could proceed to high fountaining today. In recent episodes of the ongoing eruption within Halemaʻumaʻu, low-level precursory activity has lasted from a few hours to a few days. This activity can include spatter from north and/or south vents, small dome fountains, and lava overflowing from one or both vents. At the start of previous episodes, precursory activity has rapidly escalated into sustained high fountaining over minutes to tens of minutes. The tiltmeter at Uēkahuna (UWD) has recorded 13 microradians of inflation since the end of the last episode. Low level seismic tremor continues beneath Halemaʻumaʻu crater.