Janet Babb, Kīlauea Update: Good afternoon, everyone.
On the Lower East Rift Zone, Fissure 8 is still active. It continues to erupt lava into the perched channel that extends down on the west side of Kapoho Crater and feeds lava into the ocean. This morning, the main ocean entry was a little bit west of Ahalanui, with the flow margin about 500 meters, or 0.3 mile, from the Pohoiki boat ramp. There’s still some weak ocean entry points to the north of this main entry over near the Kapoho Bay lobe of lava where there were some weak, wispy plumes there. The flow front along the ocean, along the coast is still about 6 kilometers wide or 3.7 miles wide. On the Lower East Rift Zone, the sulfur dioxide emissions remain high, and the ocean entry hazards include the laze plume, as well as the possible hydrovolcanic explosions, what we referred to on Monday as “littoral explosions.” Hydrovolcanic is a little more intuitive word to explain the lava-seawater interaction.
Up at the summit, as we speak earthquakes are occurring at a rate of about 25-30 per hour as the volcano builds up to the next collapse event [this phonecall at 1 pm, collapse came at 4:33 pm.] The previous collapse event weas at 1:28 am July 18, so it’s been about 36 hours. We are within that time interval where we typically see these collapses occur. At the summit, the sulfur dioxide emissions are low. We’ll be posting some new photos and a new map shortly after this media call. That’s all.
Mike Zoellner, geologist, Center for the Study of Active Volcanoes, UHI
Transcript – July 11 Eruption Update
Janet Babb, USGS: On the Lower East Rift Zone, Fissure 8 continues to erupt, and overnight the channelized flow that was diverted from the main channel that went west of Kapoho Crater advanced to the ocean, and, unfortunately, in its path, it destroyed the Kua O Ko La Charter School and the Ahalanui Beach Park area. And there’s now a new, very robust ocean entry plume near the Ahalanui Beach Park area. So in all, the flow front at the ocean now is about 3.7 miles wide.
In this morning’s overflight, there were no other fissures that appeared to be active.
At the summit, following yesterday’s early morning collapse/explosion that released energy equivalent to a magnitude 5.3 earthquake, the earthquakes have resumed— there was a period of quiet, but the earthquakes have resumed and currently the summit area is experiencing about 25-30 earthquakes per hour. This pattern is expected to continue.
As far as gas emissions at the summit, the gas emissions remain low, and on the Lower East Rift Zone, the gas emissions remain high. And with that, of course, the problems with vog continue with those high emissions.
Tina Neal, HVO: Good morning, everyone. Just to give you an update on what’s going on at Kilauea Volcano. In the Lower East Rift Zone, the effusive eruption of lava continues with little significant change from the last few days. The Fissure 8 spatter cone continues to produce a pretty vigorous river of lava in an open channel that heads to the northeast and then turns southeast, then enters the ocean about 8 miles downflow.
One of the interesting things observed by our field crews during the overflight this morning is that the channel system in the lower portion of this lava flow where it ends up into the ocean has gone through some changes. And this is an interesting phenomenon, reorganization, that we’re trying to understand. It appears at times that the channel is very vigorous all the way to the ocean, and at other times it sort of diminishes and just becomes a broad, rubbly front. As of this morning, the channel was mostly on the southern side of the flow, and the margin of the flow is expanding a little bit to the south. So there’s some very interesting channel dynamics going on in this lava flow in the lower portion that really doesn’t [act??] its behavior as it spreads out and enters the ocean.
Lava coverage ~7.7 square miles, 19.9 square km, 4917 acres.
Janet Snyder, spokesperson from Hawai’i County Mayor’s Office, says at least 117 homes destroyed, but Civil Defense admin Talmadge Magno says probably “a lot more”
Here’s a video clip and two screengrabs to sum up Kilauea’s activity today: a half-mile-wide a’a flow pouring into Kapoho Bay and slowly filling it, while the summit steams weakly after a 5.5 earthquake yesterday.
Screengrabs from the Halema’uma’u and LERZ webcams about 3pm:
ETA: Oh, look. Perfect angle of the sun right now.
Additional info from HVO morning status report: “Local videographers reported that lava entered the ocean at Kapoho Bay at about 10:30 PM HST on June 3. […] A lava breakout is also occurring upslope [north] of the Kapoho cone cinder pit, with active flows about 330 yards southeast of the intersection of Railroad Avenue and Cinder Road.. […]Following the small [M5.5] explosion at about 3:50 PM HST on June 3, earthquake activity at the summit has been low. Inward slumping of the rim and walls of Halema`uma`u continues in response to persistent subsidence. ”