An eruption began at the top of Kīlauea on December 20 at around 9:30 p.m. HST from multiple cracks opening up on the walls of Halemaʻumaʻu crater. (See previous article) ... update of the observatory:
Lava cascaded into the summit water lake, boiling the lake water and forming a new lava lake at the base of the crater,
in full growth.
Kilauea - Halema'uma'u crater thermal camera 12/20/2020 / 10:38 p.m. HST (top image) and 12/21/2020 / 12:38 a.m. HST (bottom image) - USGS - HVO
The northern fissure produced the tallest lava fountain at around 50 m (165 feet). All of the lava remains contained within Halema'uma'u Crater in the Kīlauea Caldera. The lava blanket is 10m deeper or greater than the water in this photo (base map is from images collected on September 23, 2020).
The easternmost vent produces fountains up to about 50 m in height, with minor fountains on the west side. Occasional explosions of uncertain origin occur from the surface of the lava lake.
Kilauea - Halema'uma'u crater - feeding points for the new lava lake which replaces the acidic water lake (base map is from images collected on September 23, 2020) - Doc. USGS 21.12.2020
The red dots are the approximate locations of the lava-feeding fissure vents flowing into the bottom of Halema'uma'u Crater. The water lake at the base of Halema'uma'u crater has been replaced by a growing lava lake. The lava blanket is 10m (32ft) deep or larger and more extensive than the water in this photo (base map is from images collected on September 23, 2020).
Source: USGS - HVO