Today’s Eruption Summary
The USGS has updated the energy release for yesterday evening’s summit collapse to M5.5. (For more info: “Why Do Earthquake Magnitudes Sometimes Change?” from a 2016 issue of Volcano Watch by HVO.)
Fissure 8 exhibited surge behavior afterwards. Overnight, drone crews observed minor overflows just northwest of Kapoho Cone, most of which were confined to the existing flow field and/or stopped before traveling far enough to threaten structures.
The main ocean entry and southern margin of the flow haven’t moved much in the past few days. However, USGS reports “a new lobe has started from the southern lobe and is active along its southwestern margin, slowly heading towards the ocean.” Today’s 1 pm map clarifies the new lobe’s location:
Ikaika Marzo, a lava tour boat operator who stays a sensible distance from shore, reportedly saw lava is in Isaac Hale Park, within 50 m of Pohoiki boat ramp at 7:15 this evening.
No summit collapse today, unless the pattern changes; the next one ought to occur tomorrow morning.
Here’s highlights of the USGS Media Conference Call from this afternoon:
Full audio file archived here.