Images

A helicopter overflight on April 16, 2021, at approximately 12 p.m. HST allowed for aerial visual and thermal imagery to be collected of the eruption within Halema‘uma‘u crater at the summit of Kīlauea Volcano.

A view of the south margin of the perched lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. This photo was taken from the east rim of the crater, and shows the steep levee containing the lake. USGS photo by M. Patrick.

A view of the lava lake from the east rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The active portion of the lake is present at the far (western) end of the crater. USGS photo by M. Patrick on April 16, 2021.

An HVO geologist surveys the lava lake from the eastern rim of Halema‘uma‘u Crater, at the summit of Kīlauea. The cliff that covers most of the top half of the photo formed during the collapse events of 2018, and gives a sense of the scale of that event. USGS photo by M. Patrick on April 16, 2021.

A close-up view of the western fissure within Halema‘uma‘u at the summit of Kīlauea Volcano, Island of Hawai‘i. Lava continues to enter the lava lake from a wide inlet near the base of the western vent (fuming at center right). Crustal foundering is common on the active lava lake surface (center bottom), located on the western side of the crater.

Hydrologic Technician Andy Cloutier visited USGS gaging station 01069500 on the Mousam River at West Kennebunk, Maine in mid-April of 2021.

A photograph of Colvin Creek during a cool Fall reddish sunset in Reston, Virginia

This view from the south rim of Halema‘uma‘u shows the perched lava lake, supplied by lava from the western fissure (upper right portion of photo). The levee surrounding the active lava lake is up to about 5 m (16 ft) high. USGS photo by M. Patrick on April 13, 2021.

A close up view of the inlet at the western margin of the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. The lava stream was covered in a thin, flexible crust and was moving at a very slow velocity. USGS photo taken by M. Patrick on April 13, 2021.

Scientist istalling a swallow nest box near Ashumet Pond, Cape Cod Massachusetts as part of a study on the fate and effects of PFAS chemicals. 

Lava continues to erupt from the west vent in Halema‘uma‘u crater at Kīlauea Volcano's summit. This photo of the vent and active western portion of the lava lake was taken around 3:00 p.m. HST from the south rim of Halema‘uma‘u crater. USGS photo taken by K. Lynn on April 9, 2021.

On Friday, lava erupting from the west vent in Halema‘uma‘u crater emerged from a source closer to the vents base (center), a few feet away from the submerged effusive inlet that has been feeding the lava lake for several weeks (lower right).

On Friday afternoon, April 9, lava entered the Halema‘uma‘u lava lake from two sources near the base of the west vent (degassing on left side of the image). This photo was taken around 4:00 p.m. HST from the western rim of Halema‘uma‘u crater, at Kīlauea summit. The lava source closer to the west vent emerged approximately one hour before this photo was taken.

The Region 1, April 2021 "Honorable Mention #2" Winner (by Bonnie McDevitt)

The crusted-over southern shoreline of the lava lake in Halema‘uma‘u at Kīlauea's summit has accumulated talus (rubble) blocks on the surface since it solidified in February. On April 8, 2021, HVO field geologists noted steaming east of the talus (above the rubble in the photo) that was producing hazy viewing conditions. USGS photo by C. Parcheta.

Sartorius Micro Balance, USGS - NMWSC

Visual Accumulation Drum Recorder, USGS - NMWSC

A zoomed in view of the active lava lake and western vent, taken from the west rim of Halema‘uma‘u crater at Kīlauea summit. The active lava lake remains perched a few meters (yards) higher than the surrounding solidified lava crust. A few small rafted islands (darker in color) are visible within the active western lava lake.

View of the Kīlauea summit lava lake from the west rim of Halema‘uma‘u crater on April 7, 2021. Lava continues to erupt from the west vent, where a diffuse gas plume is visible in the lower left. The active west part of the lava lake (lower center) is a lighter gray color, compared to the darker appearance of the solidified surface crust to the east.

The Region 1, April 2021 "USGS at Work" Winner (by Alex Olson)

The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active, as seen in this view looking north. Active surface lava is limited to the western (left) portion of the lake between the main island and the western fissure complex. The blueish tinge to the plume from the western fissure complex (left) is due to sulfur dioxide (SO₂).