Volcano Hazards Program Office

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Active lava lake at the summit of Kīlauea Volcano
March 17, 2021

Halema‘uma‘u lava lake, Kīlauea summit eruption—March 17, 2021

On St. Patrick's Day, March 17, 2021, a rainbow was observed adjacent to the active lava lake at the summit of Kīlauea Volcano. This photo was taken around 11:00 a.m. HST from the south rim of Halema‘uma‘u crater. In the nearly three months since the eruption started on December 20, 2020, the active surface of the lava lake has risen to approximately 222 m (728 ft). USGS

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Outline of the Steamboat and Cistern plumbing systems from seismic data
March 16, 2021

Outline of the Steamboat and Cistern plumbing systems from seismicity

Outline of the Steamboat and Cistern plumbing systems, with two viewing angles. The structure, color-coded by depth, delineates the observed seismically active area during eruption cycles of Steamboat Geyser. The solid star, solid square, and open triangles denote Steamboat Geyser, Cistern Spring, and seismic station locations on the surface, respectively.

colored areas showing seismic views
March 16, 2021

Seismic view of Steamboat Geyser and Cistern Spring

Outline of the Steamboat and Cistern plumbing systems. The structure, color-coded by depth, delineates the observed seismically active area during eruption cycles of Steamboat Geyser. The solid star, solid square, and open triangles denote Steamboat Geyser, Cistern Spring, and seismic station locations on the surface, respectively.

View of the lava lake from the south rim of Halema‘uma‘u, at the summit of Kīlauea
March 15, 2021

View of lava lake in Halema‘uma‘u - Kīlauea, March 15, 2021

View of the lava lake from the south rim of Halema‘uma‘u, at the summit of Kīlauea, looking north. The western (left) portion of the lava lake remains active, with small scale crustal foundering events. Lava enters the lake at two sources approximately 20 to 30 meters (65 to 100 ft) apart at the base of the western vent spatter cone. The western active lava lake has been

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March 15, 2021

Kīlauea Summit Eruption Thermal

This thermal video shows the lava lake in Halema‘uma‘u, at the summit of Kīlauea. Lava is supplied from the western fissure, in the upper left portion of the video. Small vent openings atop the western fissure exhibit rhythmic gas puffing. The video is shown at 5x speed. 
 

Color map of lava lake at volcano summit
March 12, 2021

March 12, 2021—Kīlauea summit eruption contour map

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 221 m (725 ft) of the crater, to an elevation of 737 m (2418 ft) asl since the eruption began on December 20, 2020. Contour lines highlighted in green, purple, and blue mark

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Color map of lava flow response times
March 11, 2021

Mauna Loa eruption response times over the past 200 years

This map shows the response time people can expect based on Mauna Loa eruptions over the past 200 years.  Different sectors around Mauna Loa are colored according to how quickly lava flows can reach populated areas.  The warmer the color, the more quickly the flows travel.  Mauna Loa lava flows over the past 200 years are shown in gray, and the numbers along the coastline

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Color photograph of lava lake and vent
March 11, 2021

Western fissure area in Halema‘uma‘u, Kīlauea summit (3/11/2021)

View looking to the northwest of western fissure area of Halema‘uma‘u lava lake at the Kīlauea summit on March 11, 2021. There is a small incandescent opening at the top of the main (southern) west vent spatter cone (middle-left), and a few smaller incandescent openings at the top of the northern west vent spatter cone (right of the main cone). The northern west vent

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Color photograph of lava lake and vent
March 11, 2021

March 11, 2021 - Halema‘uma‘u lava lake

View of the lava lake from the southern rim of Halema‘uma‘u, at the summit of Kīlauea, looking north. The western portion of the lava lake remains active, with small scale crustal foundering events. The white steam from the crater walls is more pronounced due to the heavy rain of the last couple of days. The volcanic gas plume from the western fissure area, visible in the

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March 10, 2021

Kīlauea summit — webcam time-lapse

This time-lapse sequence shows the growth of the lava lake in Halema‘uma‘u, at the summit of Kīlauea. The sequence starts on December 28, about a week after the start of the eruption and ends on March 10, 2021. The lake rises rapidly at first but then eventually slows down as the eruption rate gradually declines. The S1cam webcam time-lapse sequence includes approximately

Color photograph of lava lake and vent
March 7, 2021

March 7, 2021 — Kīlauea

A wider view of the western portion of the lava lake within Halema‘uma‘u, at the summit of Kīlauea on Sunday, March 7. The lake has developed a subtle levee on its south margin (just below the center of the photo), with several lava streams cascading down onto the lower level on the eastern end of the levee. USGS photo by M. Patrick.

Color photograph of lava lake and vent
March 7, 2021

March 7, 2021 — Kīlauea

A close-up of the western fissure on Sunday, March 7, within Halema‘uma‘u at the summit of Kīlauea. The photos shows a minor change in the vent configuration over the preceding few days. A new lava stream was active north of the normal lava stream entering the lake. This new lava stream was perched above the lake surface, and fed a narrow channel entering the lake. The new

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