Mount Spurr, the highest volcano of the Aleutian Arc, is a large stratocone constructed at the center of a roughly 5 km-wide horseshoe-shaped caldera that is open to the south. The volcano lies 80.87 miles west of Anchorage and NE of Chakachamna Lake.

Mount Spurr forms the southern buttress of the Tordrillo Range, with an active vent on Crater Peak below the summit. This 11,070-foot volcano last erupted in September of 1992, when it dusted the region with an eighth-inch layer of volcanic ash and shut down the regular life in Alaska’s largest city for several days.

Mount Spurr is a stratovolcano in the Aleutian Arc of Alaska, named after United States Geological Survey geologist and explorer Josiah Edward Spurr, who led an expedition to the area in 1898.

Jul 26, 2011 · The 3374-m-high summit of Mount Spurr, the highest volcano of the Aleutain arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera that is open to the south.

Mount Spurr is the closest volcano to Anchorage, Alaska (130 km W) and just NE of Chakachamna Lake. The summit is a large lava dome at the center of a roughly 5-km-wide amphitheater open to the south formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic flows that destroyed an older edifice.

Dec 7, 2024 · Mt Spurr Volcano is located 130 km west of Anchorage and NE of Chakachamna Lake. It is the highest volcano in the Aleutain arc. Most all of Alaska's volcanoes are located along the 1,500 mile Aleutian Arc that extends westward to Kamchatka and forms the northern part of the Pacific Ring of Fire.

Mount Spurr is 78 miles (126 kilometers) northwest of Anchorage, and the closest community is Beluga, 37 mi (60 km) to the southeast. It is 56 mi (90 km) south of Mount Hayes and 58 mi (93 km) northeast of Redoubt Volcano.

A map of Mount Spurr, Alaska, showing monitoring stations operated by the Alaska Volcano Observatory and hypocenters of earthquakes that occurred from January 1, 2024 through February 6, 2025. ... "AVO has observed a gradual increase in volcanic unrest over a period of several months at Mount Spurr, located about 120 km (75 miles) west of ...

Jan 26, 2005 · The 3374-m-high summit of Mount Spurr, the highest volcano of the Aleutain arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera that is open to the south.

Mount Spurr and Mount Augustine are two active stratovolcanoes located in Alaska, USA, that are closely monitored by the Alaska Volcano Observatory (AVO). Mount Spurr is situated about 130 kilometers west of Anchorage and is one of the most active volcanoes in the region.