(2) Issued:(20120127/2321Z)
(3) Volcano:Wrangell (CAVW# 1105-02-)
(4) Current Color Code:UNASSIGNED
(5) Previous Color Code:green
(6) Source:Alaska Volcano Observatory
(7) Notice Number:2012/A1
(8) Volcano Location:N 62 deg W 144 deg 1 min
(9) Area:Wrangell Volcanic Field Alaska
(10) Summit Elevation:14163 ft (4317 m)
(11) Volcanic Activity Summary:AVO can no longer seismically monitor Wrangell volcano because of seismic station outages. As a result, AVO is unable to assess seismic activity at this volcano. As at other volcanoes without real-time seismic networks, AVO will continue to use satellite data and reports from pilots and ground observers to detect signs of eruptive activity.

Because Wrangell is no longer seismically monitored, we are changing both the Volcano Alert Level from Normal and Aviation Color Code from Green to "UNASSIGNED". Wrangell will likely remain without real-time seismic monitoring until the summer of 2012, when necessary upgrades to the network will occur.
(12) Volcanic cloud height:Unknown
(13) Other volcanic cloud information:Unknown
(14) 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.
(15) Contacts:John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497

Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131
(16) Next Notice:A new VONA will be issued if conditions change significantly or alert levels are modified. While a VONA is in effect, regularly scheduled updates are posted at