Printer friendly versionALASKA VOLCANO OBSERVATORY CURRENT STATUS REPORTWednesday, September 21, 2011 11:54 AM AKDT (Wednesday, September 21, 2011 19:54 UTC)CLEVELAND VOLCANO
52°49'20" N 169°56'42" W, Summit Elevation 5676 ft (1730 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
There were no observations of elevated surface temperatures or ash emission visible in partly cloud satellite images collected over the past day. AVO has received no other reports of activity.
A growing lava dome in the crater increases the possibility of an explosive eruption, but does not necessarily indicate that one will occur. It is possible that explosions from the summit crater vent could produce ash clouds that may exceed 20,000 ft above sea level. These events can occur without warning and may go undetected in satellite imagery for hours. If lava dome growth continues, lava may overflow the crater rim to produce a lava flow and/or collapse to produce pyroclastic flows. Sudden collapse of the effusing lava could result in the generation of a volcanic ash cloud.
Without a real-time seismic network on the volcano, AVO is unable to track local earthquake activity related to volcanic unrest, provide forecasts of eruptive activity, or confirmation of explosive, ash-producing events. AVO will continue to monitor the volcano using multiple sources of satellite data.
Chris Waythomas, Acting Scientist-in-Charge, USGS
email@example.com (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF
firstname.lastname@example.org (907) 474-7131
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.