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Newest Volcano Notice Including Wrangell

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AVO/USGS Volcanic Activity Notice

Volcano: Wrangell (VNUM #315020)

Current Volcano Alert Level: UNASSIGNED
Previous Volcano Alert Level: NORMAL

Current Aviation Color Code: UNASSIGNED
Previous Aviation Color Code: GREEN


Issued: Friday, October 13, 2023, 10:44 AM AKDT
Source: Alaska Volcano Observatory
Notice Number: 2023/A1495
Location: N 62 deg W 144 deg 1 min
Elevation: 14163 ft (4317 m)
Area: Wrangell Volcanic Field

Volcanic Activity Summary:

Due to a station outage, the Alaska Volcano Observatory (AVO) has lost the capability to monitor Mount Wrangell volcano seismically and cannot reliably detect changes in unrest at the volcano. AVO is moving the Volcano Alert Level and Aviation Color Code of Mount Wrangell to UNASSIGNED. As at other Alaska volcanoes, AVO will continue using satellite, regional infrasound, lightning data, and reports from pilots and ground observers to detect signs of eruptive activity should they occur.



Recent Observations:
[Volcanic cloud height] Not applicable
[Other volcanic cloud information] Not applicable

Remarks:

Mt. Wrangell is a 4317 m (14,163 ft) high, andesitic, shield volcano with an ice-filled summit caldera, located in the Wrangell-St. Elias National Park and Preserve. Mt. Wrangell has three small post-caldera craters, named North Crater, East Crater, and Mt. Zanetti. These craters are all geothermally active, and there are frequent historical reports of steam from Mt. Wrangell. There are also several questionable reports of historical eruptive activity. Mt. Wrangell is 330 km (206 mi) northeast of Anchorage.



Contacts:

Matt Haney, Scientist-in-Charge, USGS mhaney@usgs.gov (907) 786-7497

David Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 378-5460



Next Notice:

A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at
http://www.avo.alaska.edu



The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.