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An eruption at Kīlauea's summit began at approximately 3:20 p.m. HST on September 29, 2021. Lava activity is confined within Halema‘uma‘u crater, in the closed area of Hawai‘i Volcanoes National Park.

HVO scientists collect detailed data to assess hazards and understand how the eruption is evolving at Kīlauea's summit, all of which are shared with the National Park Service and emergency managers. Access to this hazardous area is by permission from, and in coordination with, Hawai‘i Volcanoes National Park.

June 2, 2022 — Kīlauea, Eruption Continues within Halema‘uma‘u Crater

Color photograph of lava lake
View looking north of the active lava lake within Halema‘uma‘u Crater, at the summit of Kīlauea, during a volcano monitoring field shift on June 2, 2022. Spattering of lava occurred intermittently along the edges of the active lava lake basin, as shown by the orange areas on the north side of the basin. In the southeast lobe (lower right of photo), lava moved rapidly southeastward from the pinched area, through the lobe, and under the hardened crust to the southeast. Occasionally, solidified pieces of crust got stuck in the pinched zone, causing lava to slow. Once the solidified crust dislodged, the speed of the lava increased again. USGS photo by J.M. Chang.
Color photograph of volcanic vent
Telephoto view of the west vent within Halema‘uma‘u Crater, at the summit of Kīlauea. USGS photo taken by J.M. Chang at 12:01 p.m. HST from the south rim. USGS photo by J.M. Chang.
color photograph of lava lake
Photo of the lava lake within Halema‘uma‘u Crater, at the summit of Kīlauea, taken at 11:47 a.m. HST on June 2, 2022. The photo is looking towards the northeast, with the west vent and active lava lake on the left side of the photo, partially obscured by abundant fumes. USGS photo by J.M. Chang.

Halema‘uma‘u endogenous growth over the past two months

This timelapse sequence shows one image per day over the past two months from the B1cam webcam on the east rim of Halema‘uma‘u, at the summit of Kīlauea. The images show that the floor of Halema‘uma‘u has been growing endogenously. Lava is supplied beneath the solidified crust that forms the surface of the crater floor, lifting the surface in a manner similar to inflating an air mattress. In addition to endogenous growth, sporadic lava flows overplate the crust and also contribute to growth. 

May 26, 2022 — Kīlauea Summit Eruption

Lava lake activity continues in Halema‘uma‘u, at the summit of Kīlauea Volcano. A small stream of lava was pouring into a small pond northwest of the main lava lake, near the west vent.