The United States Geological Survey; United States Geological Survey - Alaska Volcano Observatory (USGS; USGS-AVO) reported that unrest activity decreased at Spurr between 19 August 2025 (local) and 20 August 2025 (local). The alert level at Spurr was lowered to "Normal" (level 1 on a 4-level scale). The aviation alert level was lowered to "Green" (level 1 on a 4-level scale).
Over the past several months, signs of volcanic unrest at Mount Spurr—including small earthquakes, gas emissions, melting ice, and surface changes—have been gradually decreasing. No ground deformation has been detected since March 2025.
Wed, 20 Aug 2025, 14:00
The Alaska Volcano Observatory (AVO) reported that over the past several months Spurr had exhibited decreasing signs of volcanic unrest, including small earthquakes, gas emissions, melting ice, and surface changes. Ground deformation had not been detected since March 2025. The data suggested that movement of magma toward the surface, which began in early 2024, had stopped.
Read allThu, 14 Aug 2025, 10:00
The Alaska Volcano Observatory (AVO) reported that over the past several months Spurr had exhibited decreasing signs of volcanic unrest, including small earthquakes, gas emissions, melting ice, and surface changes. Ground deformation had not been detected since March 2025. The data suggested that movement of magma toward the surface, which began in early 2024, had stopped.
Read allWed, 19 Mar 2025, 15:00
The Alaska Volcano Observatory (AVO) reported increasing unrest at Spurr in a special information statement issued on 12 March. Collapses of snow and ice into the summit crater lake that formed during the current period of unrest continued to occur along with steam emissions from fumaroles within and around the summit crater. New diffuse steam plumes from small snow-free spots within Crater Peak, a vent 3.5 km S of the summit, were first observed on 6 March.
Read allThu, 13 Mar 2025, 11:00
The Alaska Volcano Observatory (AVO) reported increasing unrest at Spurr in a special information statement issued on 12 March. Collapses of snow and ice into the summit crater lake that formed during the current period of unrest continued to occur along with steam emissions from fumaroles within and around the summit crater. New diffuse steam plumes from small snow-free spots within Crater Peak, a vent 3.5 km S of the summit, were first observed on 6 March.
Read allThu, 13 Mar 2025, 05:47
Screenshot of the Spurr volcano from the AVO video (image: Alaska Volcano Observatory)
The elevated activity at the volcano continues.
Read allWed, 5 Mar 2025, 15:00
On 28 February the Alaska Volcano Observatory (AVO) reported that ongoing unrest at Spurr was characterized by elevated seismicity and continuing deformation. Seismicity remained elevated, though had slightly decreased during the past few days. The seismic network recorded over 70 earthquakes with most located beneath the summit and some located beneath Crater Peak.
Read allThu, 20 Feb 2025, 05:57
![The thermal image of the summit vent at Spurr on 7 February (image: Alaska Volcano Observatory)]()
The thermal image of the summit vent at Spurr on 7 February (image: Alaska Volcano Observatory)
The elevated seismic activity at the volcano continues.
Read allMon, 17 Feb 2025, 06:27
![The Spurr volcano CTK webcam screenshot on 16 February (image: Alaska Volcano Observatory)]()
The Spurr volcano CTK webcam screenshot on 16 February (image: Alaska Volcano Observatory)
The seismic unrest at the volcano persists.
Read allWed, 12 Feb 2025, 15:00
In a special information statement on 6 February, the Alaska Volcano Observatory (AVO) reported that unrest at Spurr continued and was likely caused by new magma beneath the volcano. The nature of the unrest and the 10-month duration suggested that an eruption remained a possibility. The most likely vent location would be at Crater Peak, which erupted in 1953 and 1992; less likely would be the summit vent, which erupted several thousand years ago.
Read allFri, 7 Feb 2025, 06:37
![A plot showing recent unrest at Mount Spurr (image: AVO)]()
A plot showing recent unrest at Mount Spurr (image: AVO)
The seismic swarm beneath the ice-snow-covered edifice continues.
Read all
Current status: normal or dormant (1 out of 5)
Spurr volcano eruptions:
