During 8-14 February, surface lava flows were not visible on Kīlauea's Pūlama pali fault scarp due to lava traveling underground through the PKK lava tube until reaching the East Laeʻapuki lava delta and flowing into the sea. Observations on 7 February revealed that the lava delta had broadened 120 m westward since 30 January. During the report period, background volcanic tremor was near normal levels at Kīlauea's summit, with numerous sporadic shallow earthquakes continuing to occur at the summit and upper E rift zone. Volcanic tremor reached moderate levels at Puʻu ʻŌʻō. Slow, steady inflation continued at Kīlauea's summit as it has more-or-less since mid-January.

Source: US Geological Survey Hawaiian Volcano Observatory (HVO)

Geological Summary. Kīlauea overlaps the E flank of the massive Mauna Loa shield volcano in the Island of Hawaiʻi. Eruptions are prominent in Polynesian legends; written documentation since 1820 records frequent summit and flank lava flow eruptions interspersed with periods of long-term lava lake activity at Halemaʻumaʻu crater in the summit caldera until 1924. The 3 x 5 km caldera was formed in several stages about 1,500 years ago and during the 18th century; eruptions have also originated from the lengthy East and Southwest rift zones, which extend to the ocean in both directions. About 90% of the surface of the basaltic shield volcano is formed of lava flows less than about 1,100 years old; 70% of the surface is younger than 600 years. The long-term eruption from the East Rift Zone between 1983 and 2018 produced lava flows covering more than 100 km², destroyed hundreds of houses, and added new coastline.