Kilauea volcano update: Aviation alert level lowered to ORANGE

Thu, 7 Oct 2021, 09:51
09:51 AM | BY: T
Close-up view of the lava fountaining at the Kilauea lava lake on Oct 5, 2021 (image: HVO / USGS)
Close-up view of the lava fountaining at the Kilauea lava lake on Oct 5, 2021 (image: HVO / USGS)
HVO lowered Kīlauea's volcano alert level to WATCH and its aviation color code to ORANGE, reflecting the less-hazardous nature of the ongoing eruption. 
Note that in our color scheme, the volcano remains "red", meaning that it is erupting at the moment.
HVO reported that "vigorous fountaining—with bursts up to 50–60 meters (164–197 ft)—produced significant amounts of pumice, Peleʻs hair, and fragments of volcanic glass that were deposited in areas downwind along the rim and beyond Halemaʻumaʻu crater.
"Over the past several days, a thick layer (approximately 27 meters or 89 ft) of molten lava has accumulated as a lava lake at the base of the crater, partially drowning the vents resulting in subdued fountaining. During the same time, the amount of sulfur dioxide (SO2) emitted has dropped from 85,000 tons per day (one metric ton equals 2,200 pounds) to 12,000 tons a day.
"Although the amount of gas and volcanic particle production has decreased since the eruption onset, they both remain significant local hazards within the plume. Concentrations of SO2 at the vents remain high (likely over 100 parts per million or ppm) and significantly elevated (5-10 ppm) at stations a few kilometers (a couple of miles) southwest of Halemaʻumaʻu.
"The eruption is currently confined to Halemaʻumaʻu crater, within Hawai'i Volcanoes National Park.  HVO does not see any indication of activity migrating elsewhere on Kīlauea volcano  and expects the eruption to remain confined to the summit region."

Previous news

Wed, 6 Oct 2021, 05:08
The western vent (lower right) remains the dominant source of fountaining, while low lava fountains are still emerging through the southern portion of the lava lake (center right) (image: HVO)
The effusive eruption of the volcano continues within the Halemaʻumaʻu crater. ... Read all
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