(BIVN) – The south margin of the Fissure 8 lava flow near the ocean entry remains unchanged, Hawaii County Civil Defense reported Sunday evening. Active lava is approximately 0.5 mile from Isaac Hale Park / Pohoiki Boat Ramp.
The USGS Hawaiian Volcano Observatory reported at 11:21 a.m. HST:
Fissure 8 continues to erupt lava into the perched channel leading northeastward from the vent. Lava levels in the upper channel increased briefly following this morning’s summit collapse-explosion event at 3:26 a.m. Another short-lived overflow of the channel at the vent spread east-southeast this morning, but did not advance beyond the existing flow field. The channelized ʻaʻā flow west of Kapoho Crater continues to be the main ocean entry at the southern edge of the flow front. The southern margin of the flow remained about 1 km (0.6 mi) from Isaac Hale Park this morning. Despite no visible surface connection to the fissure 8 channel, lava continues to ooze out at several points on the 6 km (3.7 mi) wide flow front into the ocean.
No other fissures were active this morning, scientists said.
“Be aware that spill overs of the channel and other breakouts are possible on the active flow field,” Hawaii County Civil Defense reminded. “Do not access the active flow field due to extreme hazard.”
Heavy rain and thunderstorms remain a possibility this evening in Kona and the Puna Districts. “Remain alert for changing weather conditions and possible flooding conditions,” civil defense said.
“A slight chance for thunderstorms remains in the forecast through tonight for portions of the Puna District as heat and emissions interact with imcoming moisture,” the National Weather Service stated Sunday. “The upper low is forecast to pull further away tonight and Monday with an upper ridge building in across the area. This will cause to airmass to become more stable with a downward trend in shower activity.”
Seismic activity at the summit decreased immediately following the collapse/explosion that occurred at 3:26 a.m. early Sunday morning, but was already beginning to increase at noon. “We expect the number of earthquakes to increase through Monday morning or afternoon until the next collapse/explosion occurs,” the USGS Hawaiian Volcano Observatory said. “Inward slumping of the rim and walls of Halemaʻumaʻu continues in response to the ongoing subsidence at the summit.”