Images

The Kahauale`a II flow began as a breakout on the east rim of Pu‘u ‘Ō‘ō crater on May 6, and has advanced northward towards the forest. Today, slowly moving pāhoehoe lobes (light colored flows in this image) were burning moss and lichen on older Pu‘u ‘Ō‘ō ‘A‘ā flows and approaching the forest boundary. Pu‘u ‘Ō‘ō cone is obscured by thick clouds in this photo.

The small lava lake on the northeast rim of Pu‘u ‘Ō‘ō crater has been built into a small cone, with only a few small openings at the top. One of these small openings had sloshing lava near the surface.

HVO geologists use a laser rangefinder to measure the height of the shield and cone built up around the northeast lava lake, on the east rim of Pu‘u ‘Ō‘ō crater. The peak of the cone is now about 18 m (60 ft) above the former crater rim.

The small lava lake on the northeast rim of Pu‘u ‘Ō‘ō crater has been built into a small cone, with only a few small openings at the top. One of these small openings had sloshing lava near the surface.

Why did the lava tube cross the road? This image shows the Peace Day lava tube coming down the pali in Royal Gardens subdivision. The lava tube parallels Ali`i avenue, shown by the straight line of warm temperatures that represent asphalt heated in the sun.

Do not be misguided by the risky actions of this person (upper right), who is standing on an active lava delta that could collapse without warning, amidst a plume of superheated steam, hydrochloric acid, and tiny particles of volcanic glass. To avoid these ocean entry hazards, HVO advises staying at least 400 m (one-quarter mile) from where lava enters the sea.

This false-color image obtained from NASA's Terra satellite on January 19, 2009, shows an ash plume (white plume spreading north, top) erupting from Chaitén Volcano. Red color indicates green vegetation.

This image was captured on Monday, May 6, by the Advanced Land Imager sensor aboard NASA's Earth Observing 1 satellite. Although this is a false-color image, the color map has been chosen to mimic what the human eye would expect to see. Bright red pixels depict areas of very high temperatures, and show active or very recently active lava flows.

Another entry point has two larger lava streams entering the water. The lava fragments due to cooling and disruption by the battering surf, and some of these pieces float on the water's surface in front of the entry point (see lower left portion of photo).

Over the past week this spatter cone on the floor of Pu‘u ‘Ō‘ō crater has been the source of several large, but brief, lava flows on the crater floor. Today, the cone was producing pulsating gas jetting sounds.

After a 12 km (7.5 mile) journey from the vent on Pu‘u ‘Ō‘ō cone through a lava tube, lava pours into the ocean in narrow streams at one of the eastern entry points.

Over the past week this spatter cone on the floor of Pu‘u ‘Ō‘ō crater has been the source of several large, but brief, lava flows on the crater floor. Today, the cone was producing pulsating gas jetting sounds.

This is a typical GPS monitoring station example from Hualālai Volcano.

The September Lobe monitoring station is part of the network of monitoring stations that detects and reports subtle changes in the volcanic vent area. At 2150 m (about 7100 ft) elevation, maintenance is performed during good weather to keep the station fully functional.

Breakouts have diminished over the past few days on the Kahauale‘a flow (heading northeast of Pu‘u ‘Ō‘ō), and the flow front has not advanced significantly since April 8. Compare today's thermal image with that from the April 8 overflight. During today's flight, there were no active breakouts at the flow front.

Lava erupted this morning from the cone near the north rim of Pu‘u ‘Ō‘ō crater, with a small portion of the flow emptying out onto the east spillway. This new flow brings the floor of the crater slightly closer to the north crater rim.

A vigorous flow was erupted on the floor of Pu‘u ‘Ō‘ō crater starting early this morning from a cone near the north rim, but a smaller flow was also erupted from a spatter cone near the south rim around noon. This photo captures a burst of spatter from the southern cone as the small flow was erupted.

Cascades Volcano Observatory (CVO) staff in front of the CVO office building in Vancouver, Washington, May 1, 2018

Map showing locations of USGS NetQuakes recorders and epicenter of M3.2 earthquake occurring on April 3, 2013. Around the map are plots of the strongest shaking recorded at each of the NetQuakes sites associated with this earthquake. The plots are not adjusted to reflect differences in shaking among the individual sites.

The two active flows (Kahauale‘a and Peace Day) are both fed from vents high on Pu‘u ‘Ō‘ō cone. This view (looking southwest) shows Pu‘u ‘Ō‘ō crater. In the foreground, a lava pond and small spots of orange glow mark the location of the vent for the Kahauale‘a flow.

This steep spatter cone near the north rim of Pu‘u ‘Ō‘ō crater was making loud gas jetting sounds, presumably due to gas forced through the small glowing holes near the top of the cone.