Svartsengi volcano update: uplift continues

The new hazard map relating to the current seismic unrest under the area (image: Icelandic Met Office)

The new hazard map relating to the current seismic unrest under the area (image: Icelandic Met Office)

Recent GPS deformation data continue to detected the uplift in the Svartsengi area, although the rate of the ground swell has slowed in recent weeks.
Scientists are currently evaluating when the likelihood of a new magma intrusion or eruption might rise. Their assessment is based on the assumption that the same volume of magma must accumulate beneath Svartsengi as in previous events along the Sundhnúkur crater row.

Experts at the Icelandic Meteorological Office are revising the possible scenarios, including the estimated volume of magma needed beneath Svartsengi to trigger another dike formation or eruption.

While the deformation data indicate continued uplift, short-term daily fluctuations are common and may not reflect true changes in magma inflow. These variations can result from weather conditions, measurement inaccuracies, or natural variability and usually have little impact on the broader trend. Therefore, scientists emphasize the importance of analyzing weekly or longer-term data to accurately understand ongoing geological processes.

The seismic activity is still being detected along the dike that formed on April 1, though the number of earthquakes has decreased since the eruption ended. Over the past two weeks, several dozen earthquakes have been recorded daily on average.

The hazard assessment map has been updated and will remain in effect until May 20 unless new developments occur.

Source: Icelandic Meteorological Office volcano activity update 9 May 2025

Volcanic activity worldwide 8 May 2025: Santiaguito volcano, Fuego, Semeru, Ibu, Dukono, Reventador,…

Map of today's active volcanoes

Map of today’s active volcanoes

Canlaon (Central Philippines): (8 May) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20250508/0830Z FL090 EXTD NW REPORTED OBS VA DTG:08/0830Z

Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 05 kts in W direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 08/0912Z EST VA DTG:08/1120Z to 7000 ft (2100 m)

Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 05 kts in N direction.
The full report is as follows: VA TO FL150 LAST REPORTED AT 08/1500Z MOV N to 15000 ft (4600 m)

Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 9000 ft (2700 m) altitude or flight level 090 and is moving at 05 kts in NE direction.
The full report is as follows: CONTINUOUS VA EMISSIONS TO FL090 OBS MOV NE AT 08/1550Z to 9000 ft (2700 m)

Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS ONGOING

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: FREQUENT VA EMS to 15000 ft (4600 m)

Poas (Costa Rica): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA EMS ONGOING EST VA DTG:08/1940Z

Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: NEW VA EMS to 20000 ft (6100 m)

Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PSBL VA EMS

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: ONGOING VA EMS