Kīlauea volcano is erupting. At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park. Fissures at the base of Halemaʻumaʻu crater are generating lava flows on the surface of the lava lake that was active until May 2021.
Images
Hawaiian Volcano Observatory images of eruptive activity, field work, and more.
![Color photograph of fissure eruption](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2846%29.png?itok=9eXKuCZ3)
Kīlauea volcano is erupting. At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park. Fissures at the base of Halemaʻumaʻu crater are generating lava flows on the surface of the lava lake that was active until May 2021.
![Color photograph of fissure eruption](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2845%29_0.png?itok=pEQuNEOs)
At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park.
At approximately 3:20 p.m. HST on September 29, 2021, an eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park.
![Color photograph of tephra](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2848%29.png?itok=RbRWQewy)
The new eruption within Halema‘uma‘u crater at Kīlauea's summit is depositing tephra downwind of the erupting vents. Tephra is a term that describes products of an eruption that travel through the air before being deposited.
The new eruption within Halema‘uma‘u crater at Kīlauea's summit is depositing tephra downwind of the erupting vents. Tephra is a term that describes products of an eruption that travel through the air before being deposited.
![Color photograph of volcanic vent erupting](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2847%29.png?itok=-C_N_Jl0)
At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaʻumaʻu crater. This telephoto image shows the vent area and lava fountain through volcanic gas. USGS image.
At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaʻumaʻu crater. This telephoto image shows the vent area and lava fountain through volcanic gas. USGS image.
![An image of the new Kīlauea summit fissure eruption within Halema'uma'u crater taken at approximately 4:15 p.m. HST on September](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/IMG_7551.jpeg?itok=6O9fniAR)
An image of the new Kīlauea summit fissure eruption within Halema'uma'u crater taken at approximately 4:15 p.m. HST on September 29, 2021.
An image of the new Kīlauea summit fissure eruption within Halema'uma'u crater taken at approximately 4:15 p.m. HST on September 29, 2021.
![Color photograph of volcanic vents](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2853%29.png?itok=OMERtvDd)
At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaʻumaʻu crater, a little more than an hour after new fissure vents opened on the floor of Halemaʻumaʻu crater. By 5:09 p.m., when this photo was taken, the west wall vents had grown.
At approximately 4:43 p.m. HST on September 29, 2021, another vent opened on the west wall of Halemaʻumaʻu crater, a little more than an hour after new fissure vents opened on the floor of Halemaʻumaʻu crater. By 5:09 p.m., when this photo was taken, the west wall vents had grown.
![Color photograph of lava lake](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2852%29.png?itok=no-arNyd)
An eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park, on September 29, 2021. Vigorous lava fountains formed in the middle part of the lava lake that was active in Halemaʻumaʻu crater from December 2020 until May 2021.
An eruption began within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park, on September 29, 2021. Vigorous lava fountains formed in the middle part of the lava lake that was active in Halemaʻumaʻu crater from December 2020 until May 2021.
![Color image of volcanic gas](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/MicrosoftTeams-image%20%2851%29.png?itok=xsJOvuUq)
The eruption that began today within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park, is generating a vigorous plume of volcanic gas.
The eruption that began today within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park, is generating a vigorous plume of volcanic gas.
This reference map depicts the ongoing Kīlauea summit eruption as of approximately 6:00 PM on September 29, 2021. Several new fissures (orange lines) within Halema‘uma‘u have erupted enough lava (red) to cover nearly all of the 12/2021–5/2021 lava lake by more than 36 ft (11 m).
This reference map depicts the ongoing Kīlauea summit eruption as of approximately 6:00 PM on September 29, 2021. Several new fissures (orange lines) within Halema‘uma‘u have erupted enough lava (red) to cover nearly all of the 12/2021–5/2021 lava lake by more than 36 ft (11 m).
![A USGS Hawaiian Volcano Observatory geologist takes video of the eruption that started within Halema'uma'u crater Kīlauea summit](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/IMG_7569.jpeg?itok=z-5g8zWi)
A USGS Hawaiian Volcano Observatory geologist takes video of the eruption that started within Halema'uma'u crater, Kīlauea summit, at about 3:20 p.m. on September 29, 2021. Scientists continue to monitor the eruption and hazards from within an area of Hawai'i Volcanoes National Park that remains closed to the public due to safety reasons.
A USGS Hawaiian Volcano Observatory geologist takes video of the eruption that started within Halema'uma'u crater, Kīlauea summit, at about 3:20 p.m. on September 29, 2021. Scientists continue to monitor the eruption and hazards from within an area of Hawai'i Volcanoes National Park that remains closed to the public due to safety reasons.
Kīlauea volcano is erupting. With the summit eruption continuing through the night, HVO scientists monitor the eruption for changes in activity and volcanic hazards. High levels of volcanic gases are the primary hazard of concern, as this hazard can have far-reaching effects down-wind. USGS photo taken by D. Downs.
Kīlauea volcano is erupting. With the summit eruption continuing through the night, HVO scientists monitor the eruption for changes in activity and volcanic hazards. High levels of volcanic gases are the primary hazard of concern, as this hazard can have far-reaching effects down-wind. USGS photo taken by D. Downs.
The ongoing Kīlauea summit eruption within Halema'uma'u crater continues to feed low lava fountains in the center of the lava lake (pictured) and along the western wall of Halema'uma'u. This telephoto image is looking east at the center of the rising lava lake.
The ongoing Kīlauea summit eruption within Halema'uma'u crater continues to feed low lava fountains in the center of the lava lake (pictured) and along the western wall of Halema'uma'u. This telephoto image is looking east at the center of the rising lava lake.
A telephoto image of fissures that opened on the western wall of Halema'uma'u crater during the ongoing eruption that began yesterday, September 29, at approximately 3:21 p.m. HST. Lava from multiple fissures continues to slowly raise the level of the new active lava lake at the summit of Kīlauea. USGS image by M. Patrick.
A telephoto image of fissures that opened on the western wall of Halema'uma'u crater during the ongoing eruption that began yesterday, September 29, at approximately 3:21 p.m. HST. Lava from multiple fissures continues to slowly raise the level of the new active lava lake at the summit of Kīlauea. USGS image by M. Patrick.
A telephoto image of one of the low lava fountains near the center of the growing Halema'uma'u lava lake. The ongoing eruption at the summit of Kīlauea is confined within Halema'uma'u, with numerous lava fountains producing lava and volcanic gases.
A telephoto image of one of the low lava fountains near the center of the growing Halema'uma'u lava lake. The ongoing eruption at the summit of Kīlauea is confined within Halema'uma'u, with numerous lava fountains producing lava and volcanic gases.
![Color photograph of scientist collecting sample](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20210929_165226_0.jpg?itok=q_Nqr5Wl)
Hawaiian Volcano Observatory geologists collect tephra samples from the recent eruption within Halema'uma'u, at Kīlauea summit. Geochemical analyses of these eruption products will provide information about magma storage prior to the eruption. USGS image by K. Lynn.
Hawaiian Volcano Observatory geologists collect tephra samples from the recent eruption within Halema'uma'u, at Kīlauea summit. Geochemical analyses of these eruption products will provide information about magma storage prior to the eruption. USGS image by K. Lynn.
![Color photograph of tephra](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20210929_171737_0.jpg?itok=5bqtjyV2)
Tephra from the recent eruption within Halema'uma'u, at Kīlauea summit, is accumulating downwind of the active vents. Tephra is a term that describes products of an eruption that travel through the air before being deposited.
Tephra from the recent eruption within Halema'uma'u, at Kīlauea summit, is accumulating downwind of the active vents. Tephra is a term that describes products of an eruption that travel through the air before being deposited.
![Color photograph of tephra](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/20210929_162122_0.jpg?itok=Pheoi9l-)
delete
![Timelapse of volcanic eruption](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/multimediaFile-3304.gif?itok=xfYbGXZY)
This timelapse image sequence shows the opening sequence of the new eruption in Halema‘uma‘u crater, at the summit of Kīlauea. The first few moments are shown on a loop several times to highlight the visible uplift of the crater floor, just before the appearance of new fissures.
This timelapse image sequence shows the opening sequence of the new eruption in Halema‘uma‘u crater, at the summit of Kīlauea. The first few moments are shown on a loop several times to highlight the visible uplift of the crater floor, just before the appearance of new fissures.
![Image from the northwest rim of Halema'uma'u crater, Kīlauea summit](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/IMG_2120.jpg?itok=eIdpbgtu)
This image from the northwest rim of Halema'uma'u crater was taken in the late morning on September 29, 2021, just a few hours before the new Kīlauea summit eruption began. The solidified lava lake (center) was emplaced between December 2020 and May 2021. USGS photo taken by L. Gallant.
This image from the northwest rim of Halema'uma'u crater was taken in the late morning on September 29, 2021, just a few hours before the new Kīlauea summit eruption began. The solidified lava lake (center) was emplaced between December 2020 and May 2021. USGS photo taken by L. Gallant.
![Color photograph of lava lake](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/media/images/Picture2_4.jpg?itok=ruCDV0le)
KWcam image taken on September 28, 2021, before the eruption began in Halemaʻumaʻu on September 29, 2021. Several islands, including the one in the center of the crater that formed on December 20, 2020, are surrounded by younger lava flows erupted during the December 2020-May 2021 Kīlauea summit eruption. USGS photo.
KWcam image taken on September 28, 2021, before the eruption began in Halemaʻumaʻu on September 29, 2021. Several islands, including the one in the center of the crater that formed on December 20, 2020, are surrounded by younger lava flows erupted during the December 2020-May 2021 Kīlauea summit eruption. USGS photo.
![Color photograph of inactive lava lake](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/masonry/public/thumbnails/image/multimediaFile-3298.jpg?itok=6ZF0LAlv)
A view looking north into Halema‘uma‘u, at Kīlauea's summit, on September 24, 2021, seen during a brief clear spell between passing rain clouds. There has been no significant change in the surface elevation of the solidified crust of the lava lake since the eruption paused in late May 2021.
A view looking north into Halema‘uma‘u, at Kīlauea's summit, on September 24, 2021, seen during a brief clear spell between passing rain clouds. There has been no significant change in the surface elevation of the solidified crust of the lava lake since the eruption paused in late May 2021.