The Weekly Volcanic Activity Report: March 5–11, 2025
New activity/unrest was reported for 6 volcanoes from March 5 to March 11, 2025. During the same period, ongoing activity was reported for 15 volcanoes.
Panic spreads through Naples as shallow M4.4 earthquake hits Campi Flegrei, Italy
A shallow earthquake registered by the INGV as M4.4 hit the Campi Flegrei region of Italy at 00:25 UTC (01:25 LT) on March 13, 2025. The agency is reporting a depth of 2 km (1.2 miles). The earthquake matched the strongest event in 40 years but showed unprecedented ground accelerations, indicating greater intensity, according to the Vesuvius Observatory. The USGS and EMSC reported a magnitude of 4.2, with USGS reporting a depth of 10 km (6.2 miles) and EMSC 3 km (1.9 miles).
Increased likelihood of eruption at Mount Spurr, Alaska
The likelihood of an eruption at Mount Spurr has increased with gas emissions recorded on March 7 and 11, confirming ongoing volcanic unrest. The volcano is located about 120 km (75 miles) west of Anchorage (population 286 000), Alaska.
Eruption at Svartsengi could begin with very little warning, Iceland
Magma accumulation beneath Svartsengi has reached its highest recorded level since the beginning of the ongoing eruption series in December 2023. The volume of magma beneath Svartsengi is now greater than what was recorded before the November 2024 eruption.
Episode 13 ends after 12 hours of lava fountaining at Kīlauea, Hawai’i
Episode 13 of Kīlauea’s ongoing eruption at Halema’uma’u crater ended at 01:13 UTC on March 12, 2025, after 12 hours and 37 minutes of lava fountaining. Lava covered over 60% of the summit floor, and sulfur dioxide (SO2) emissions peaked at 40 000 tonnes per day.
Hundreds evacuate erupting Fuego volcano, Guatemala
Nearly 900 people were evacuated after Guatemala’s Fuego volcano erupted on March 9, 2025, prompting an Orange Alert and emergency response.
Pyroclastic flows surge down Fuego volcano, Guatemala
An effusive eruption began at Guatemala’s Fuego volcano at 21:00 LT (03:00 UTC on March 10, 2025) on March 9, followed by weak to moderate pyroclastic flows descending through the Las Lajas, El Jute, Seca, and Ceniza ravines.
The Weekly Volcanic Activity Report: February 26–March 4, 2025
New activity/unrest was reported for 9 volcanoes from February 26 to March 4, 2025. During the same period, ongoing activity was reported for 23 volcanoes.
Lava fountains reach 180 m (600 feet) in new eruptive episode at Kilauea, Hawai’i
Episode 12 of the ongoing Halema’uma’u eruption began at 07:30 LT (17:30 UTC) on Tuesday, March 4, 2025, with sporadic lava flows from the north and south vents. Continuous fountaining reached heights of 150–165 m (490–540 feet) by 00:20 UTC on March 5 and is expected to increase further. The eruption is part of the ongoing activity that started on December 23, 2024. The USGS maintains the Volcano Alert Level at Watch and the Aviation Color Code at Orange.
Lava overflow, increase in volcanic tremor at Stromboli, Italy
An increase in volcanic tremor accompanied by lava overflow from the North crater area has been observed at Stromboli volcano on February 28, 2025. The activity includes a modest lava fountain at vent N2, with the lava flow confined to the upper portion of the Sciara del Fuoco.
