West Crater volcano

volcanic field 1329 m / 4,360 ft
Washington, Canada and USA (mainland), 45.88°N / -122.08°W
Current status: normal or dormant (1 out of 5)

West Crater volcano is a small andesitic lava dome with lava flows in southern Washington, belonging to a volcanic field extending from Marble Mountain, north of Swift Reservoir, to south of Trout Creek Hill. The field consists mainly of small basaltic and basaltic andesite cinder cones and small shield volcanoes, oriented along a NW-SE zone SE of Mount St. Helens.
The most recent activity occurred about 8,000 years ago and formed the West Crater lava dome, a small cone at Hackamore Creek, and a phreatic crater at the summit of Bare Mountain.
The older, basaltic Trout Creek Hill shield volcano erupted a lava flow about 340,000 years ago that traveled 20 km SE and temporarily dammed the Columbia River.

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Typical eruption style: Explosive
West Crater volcano eruptions: ca. 8000 years ago

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Thu, 17 Jun 2021 (GMT) (1 earthquake)
17 Jun 2021 06:19:28 GMT
0.4

0.3 km
37 km (23 mi)
37 Km NNE of Amboy, Washington
Wed, 16 Jun 2021 (GMT) (1 earthquake)
16 Jun 2021 03:16:49 GMT
0.7

0.6 km
37 km (23 mi)
37 Km NNE of Amboy, Washington
Sat, 12 Jun 2021 (GMT) (1 earthquake)
12 Jun 2021 05:26:54 GMT
0.4

3.8 km
46 km (29 mi)
32 Km SSE of Morton, Washington
Mon, 7 Jun 2021 (GMT) (1 earthquake)
7 Jun 2021 15:01:20 GMT
0.5

0.8 km
36 km (22 mi)
37 Km NNE of Amboy, Washington
Sun, 6 Jun 2021 (GMT) (1 earthquake)
6 Jun 2021 09:59:55 GMT
0.5

3.4 km
37 km (23 mi)
38 Km NNE of Amboy, Washington

West Crater Photos

Clear view onto the lava lake inside Marum's west crater. (Photo: Tom Pfeiffer)
Clear view onto the lava lake inside Marum's west crater. (Photo: Tom Pfeiffer)
Lava lake inside Kilauea volcano's West Gap crater. The whole crust covering the lake has just been overturned, exposing the red hot glowing interior. hawaii_e7837 (Photo: Tom Pfeiffer)
Lava lake inside Kilauea volcano's West Gap crater. The whole crust covering the lake has just been overturned, exposing the red hot glowing interior. hawaii_e7837 (Photo...
Bright eruption from the central crater and glowing from NE vent (r), and a smaller eruption from the western vent (l). (Photo: Tom Pfeiffer)
Bright eruption from the central crater and glowing from NE vent (r), and a smaller eruption from the western vent (l). (Photo: Tom Pfeiffer)
The lava lake in Marum's west crater. (Photo: Tom Pfeiffer)
The lava lake in Marum's west crater. (Photo: Tom Pfeiffer)
 



See also: Sentinel hub | Landsat 8
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