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Color photograph of lava lake
March 30, 2021

March 30, 2021 — Kīlauea

The western fissure remains active, supplying lava to the lava lake in Halema‘uma‘u Crater, at the summit of Kīlauea. This photo shows a close-up of the inlet where lava enters the lake. The motion of the lava stream has been slow but continuous. USGS photo by M. Patrick.

March 30, 2021

Kīlauea Volcano — Halema‘uma‘u Lava Lake Inlet (March 30, 2021)

The lava lake remains active in Halema‘uma‘u Crater, at the summit of Kīlauea. This video shows the inlet where lava from the western fissure is supplied to the lake. The motion of the lava stream is sluggish, and this video is shown at 20x speed.
 

Color map of lava lake at volcano summit
March 29, 2021

March 29, 2021—Kīlauea summit eruption contour map showing lava lake

This map of Halema‘uma‘u at the summit of Kīlauea shows 20 m (66 ft) contour lines (dark gray) that mark locations of equal elevation above sea level (asl). The map shows that the lava lake has filled 224 m (735 ft) of the crater, to an elevation of 741 m (2431 ft) asl since the eruption began on December 20, 2020. Contour lines highlighted in green, purple, and blue mark

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Color photograph of lava lake
March 29, 2021

March 27, 2021 — Kīlauea

A close up of the inlet where lava from the western fissure feeds into the lava lake in Halema‘uma‘u, at the summit of Kīlauea. The lava stream was sluggish, with the movement barely perceptible with the naked eye. USGS photo by M. Patrick.

Color photograph of lava lake
March 29, 2021

March 27, 2021 — Kīlauea

The lava lake remains active in Halema‘uma‘u Crater, at the summit of Kīlauea. The surface area of the active lava lake has slowly decreased over the past several months, with the active surface lava now limited to a portion of the west side of lake. The lake remains perched several meters (yards) above its surroundings, bound by a steep levee on most sides. USGS photo by

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Color photograph of lava lake
March 29, 2021

March 29, 2021 — Kīlauea

The lava lake in Halema‘uma‘u crater, at the summit of Kīlauea, remains active. The active surface lava lake, shown in this photo, is limited to the western portion of the lake between the western fissure complex (center left) and the main island (right). In this view looking to the northwest, the main effusion source of lava into the lake is visible as a saw-tooth line at

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During today’s HVO helicopter overflight of the Kīlauea summit eruption, no major changes were observed
March 26, 2021

Views of Kīlauea's summit lava lake on March 26

During today’s HVO helicopter overflight of the Kīlauea summit eruption, no major changes were observed. As the west vent continues to erupt lava into the active lava lake, volcanic gas emissions remain elevated, with a visible plume rising from the western vent (upper-right). The most recent SO2 emission rates were recorded on March 22 at about 950 t/d. USGS

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An aerial view of the western portion of the lava lake within Halema‘uma‘u crater at the summit of Kīlauea
March 26, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—March 26, 2021

An aerial view of the western portion of the lava lake within Halema‘uma‘u crater at the summit of Kīlauea. The west vent (upper-right) continues to erupt lava into the perched active portion of the lava lake. The main island, which remains trapped in place by the solidified lava crust surrounding it, is visible at the bottom of the photo. USGS photo taken by L. DeSmither

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Color map of lava lake temperature
March 26, 2021

March 26, 2021—Kīlauea summit eruption thermal map

A helicopter overflight on March 26, 2021, at approximately 8 a.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. Active surface lava is largely limited to the western side of the lake; the eastern portion of the lake has stagnated and is dominated by cooling, solidified crust.

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Morning light illuminates the active west vent spatter cones from the ongoing Halema‘uma‘u eruption at Kīlauea summit
March 26, 2021

West vent cones in the ongoing Halema‘uma‘u eruption

Morning light illuminates the active west vent spatter cones from the ongoing Halema‘uma‘u eruption at Kīlauea Volcano's summit on Friday, March 26, 2021. Several of the cones were actively degassing but no spatter or lava flows were observed. USGS Photo by K. Lynn.

A close-up aerial view of the southern active lava lake margin within Halema‘uma‘u crater, at Kīlauea summit
March 26, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—March 26, 2021

A close-up aerial view of the southern active lava lake margin within Halema‘uma‘u crater, at Kīlauea summit. The formation of the levee containing the “perched” active lava lake (center to upper-right) is partially due to crustal plates from the active lake surface being pushed onto the rim of the lava lake. See the magnified image of the levee (lower-left) for a more

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a comparison of ongoing activity in Halema‘uma‘u, at the summit of Kīlauea, with a 2007 lava channel on Kīlauea's East Rift Zone
March 26, 2021

A comparison of perched lava lake and lava channel levees—Kīlauea

This figure shows a comparison of ongoing activity in Halema‘uma‘u, at the summit of Kīlauea, with a 2007 lava channel on Kīlauea's East Rift Zone. On the left, a photo shows the levee that is containing the active perched lava lake in Halema‘uma‘u. The levee is formed in part from rafted pieces of surface crust that are pushed onto the levee by the lake circulation, with

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