With the end of October, uplift and magma accumulation continued steadily in Iceland’s Svartsengi volcanic region, increasing the likelihood of an intrusion or possible eruption toward late November. Seismic activity near the Sundhnúkar crater remains low, with only minor daily tremors recorded.
Intense explosions at the Lewotobi Laki-laki volcano in Flores, Indonesia, on October 31, 2024, have generated ash plumes up to 2.5 km (1.5 miles) above sea level, impacting nearby communities. This series of eruptions began in late October 2024, with regular blasts occurring 3 to 4 times daily. The activity has continued since June 13, when the Alert Level was raised to Level 3 (Siaga).
New activity/unrest was reported for 5 volcanos from October 23 to 29, 2024. During the same period, ongoing activity was reported for 17 volcanoes.
The Santiaguito volcanic dome complex in southwestern Guatemala is experiencing increased eruptive activity, with frequent explosions and lava block detachment from the Caliente Dome. The eruptions produce ash plumes reaching 3.5 km (11 500 feet) a.s.l. and dispersing it up to 30 km (19 miles) southwest and south.
Mount Marapi experienced four explosions on October 27, 2024, producing thick ash columns up to 4 km (13 000 feet) a.s.l. that drifted westward over populated areas, blanketing them in ash.
Popocatépetl volcano in Mexico has shown increased activity over the past few days, with significant ash and SO2 emissions recorded since October 24. On October 26, volcanic ash cloud was estimated at approximately 9.1 km (30 000 feet) above sea level, extending about 833 km (517 miles) northeast of the summit into the Gulf of Mexico.
The Toulouse VAAC is reporting the detection of a significant volume of gas and volcanic material over Nyamulagira Volcano in the eastern Democratic Republic of the Congo, starting at approximately 11:15 UTC on October 25, 2024. Volcanic ash cloud was observed rising to 4 km (13 000 feet) above sea level at 13:00 UTC. As a result the Aviation Color Code was raised to Red.
New activity/unrest was reported for 6 volcanoes from October 16 – 22, 2024. During the same period, ongoing activity was reported for 27 volcanoes.
The Svartsengi volcanic system in southwest Iceland is showing increased volcanic activity due to magma accumulation beneath the surface. Magma is moving into shallow chambers, causing ground uplift and seismic activity. In recent days, seismic activity has slightly increased, with around five minor daily earthquakes along the dike, the most prominent being M1.5, indicating growing pressure.
New temporary sensors were deployed by the USGS and PNSN around Mount Adams this month in response to the volcano experiencing an unusual spike in seismic activity since September 2024.
