(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
(2) Issued: | (20170405/1941Z) |
(3) Volcano: | Cleveland (VNUM #311240) |
(4) Current Color Code: | YELLOW |
(5) Previous Color Code: | ORANGE |
(6) Source: | Alaska Volcano Observatory |
(7) Notice Number: | |
(8) Volcano Location: | N 52 deg 49 min W 169 deg 56 min |
(9) Area: | Aleutians |
(10) Summit Elevation: | 5676 ft (1730 m) |
(11) Volcanic Activity Summary: | No activity has been observed at Cleveland Volcano since an explosion was detected in seismic and infrasound data on March 24. Recent satellite images show no significant changes to the summit lava dome or crater since late February to early March. Based on seismic levels remaining low and no observations of continued activity, AVO is lowering the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. |
(12) Volcanic cloud height: | N/A |
(13) Other volcanic cloud information: | N/A |
(14) Remarks: | Cleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO's ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island. |
(15) Contacts: | Michelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497 Jeff Freymueller, Coordinating Scientist, UAFGI jfreymueller@alaska.edu (907) 322-4085 |
(16) Next Notice: |
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.