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Maunaloa volcano update: low-level eruptive activity continues, main lava flow remains inactive

Sat, 10 Dec 2022, 05:49 05:49 AM | BY: MARTIN
The eruption at Fissure 3 has slowed down (image: USGS)
The eruption at Fissure 3 has slowed down (image: USGS)
The activity on the Northeast Rift Zone continues at reduced levels of the lava output since this morning.
At about 11:30 AM local time today, the height of lava fountains at Fissure 3 decreased significantly, simultaneously with the lava flow discharge rate. The eruptive fissure is feeding lava that extends only 1.65 mi (2.65 km) from the vent in the northeast direction. Lava channels below this spot appear to be out of lava and likely seem to no longer feed the main flow.
The main lava flow, still remains stalled about 1.7 mi (2.8 km) distance from the Daniel K. Inouye Highway (Saddle Road), continues to be more or less inactive with a very slow rate of 7 feet (2 m) per hour.
The explanation for the reduced lava flows is not clear yet; it is common for effusive eruptions that either increase or decrease significantly. High discharge rate values may return anytime, the HVO continues to monitor this activity closely.
Sulfur dioxide (SO2) emissions reduced considerably as well, from 130,000 to 30,000 tonnes/day.

Previous news

Fri, 9 Dec 2022, 06:04

Maunaloa volcano update: rate of lava flow slowed down and decreased its advance

Pulsating lava fountains at Fissure 3 vent yesterday morning (image: USGS)
The effusive eruption on the Northeast Rift Zone continues with little changes. ... Read all
Thu, 8 Dec 2022, 05:34

Maunaloa volcano update: activity remains unchanged

The lava tube has formed close at the junction of two lava streams (image: USGS)
The eruption has been stable and continues on the Northeast Rift Zone. ... Read all
Show more
Maunaloa volcano
Shield volcano 4170 m / 13,681 ft
Big Island, Hawai'i, 19.48°N / -155.61°W
Current status: normal or dormant (1 out of 5) Maunaloa volcano eruptions:
1832, 1843, 1849, 1851, 1852, 1855-56, 1859, 1865-66, 1868, 1870(?), 1871, 1872, 1873, 1873-74, 1875, 1876, 1877, 1879, 1880, 1880-81, 1887, 1892, 1896, 1899, 1903, 1907, 1914-15, 1916, 1919, 1926, 1933, 1935-36, 1940, 1950, 1975, 1984, 2022 (Nov-ongoing)
Typical eruption style
Dominantly effusive.

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