Volcano Update from Archive
AVO/USGS Volcanic Activity Notice
Volcano: Okmok (CAVW #1101-29-)
Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: NONE
Current Aviation Color Code: YELLOW
Previous Aviation Color Code: NONE
Issued: Wednesday, August 27, 2008, 1:53 PM AKDT (20080827/2153Z)
Source: Alaska Volcano Observatory
Notice Number: 2008/A28
Location: N 53 deg 23 min W 168 deg 9 min
Elevation: 3520 ft (1073 m)
Area: Aleutians Alaska
Volcanic Activity Summary: Seismicity at Okmok Volcano has been steadily declining for the past eight days and significant ash plumes have not been observed since August 19. Therefore AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory.
Remarks: Visual observations of the caldera floor made on August 23 indicate that low level eruptive activity has also likely stopped. It is possible for vigorous ash emissions to resume at any time.
Contacts: John Power, Acting Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131
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.
Volcano: Okmok (CAVW #1101-29-)
Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: NONE
Current Aviation Color Code: YELLOW
Previous Aviation Color Code: NONE
Issued: Wednesday, August 27, 2008, 1:53 PM AKDT (20080827/2153Z)
Source: Alaska Volcano Observatory
Notice Number: 2008/A28
Location: N 53 deg 23 min W 168 deg 9 min
Elevation: 3520 ft (1073 m)
Area: Aleutians Alaska
Volcanic Activity Summary: Seismicity at Okmok Volcano has been steadily declining for the past eight days and significant ash plumes have not been observed since August 19. Therefore AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory.
Remarks: Visual observations of the caldera floor made on August 23 indicate that low level eruptive activity has also likely stopped. It is possible for vigorous ash emissions to resume at any time.
Contacts: John Power, Acting Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497
Steve McNutt, Coordinating Scientist, UAF
steve@giseis.alaska.edu (907) 474-7131
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.
| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | (20080827/2153Z) |
| (3) Volcano: | Okmok (CAVW# 1101-29-) |
| (4) Current Color Code: | YELLOW |
| (5) Previous Color Code: | |
| (6) Source: | Alaska Volcano Observatory |
| (7) Notice Number: | 2008/A28 |
| (8) Volcano Location: | N 53 deg 23 min W 168 deg 9 min |
| (9) Area: | Aleutians Alaska |
| (10) Summit Elevation: | 3520 ft (1073 m) |
| (11) Volcanic Activity Summary: | Seismicity at Okmok Volcano has been steadily declining for the past eight days and significant ash plumes have not been observed since August 19. Therefore AVO is lowering the aviation color code from Orange to Yellow and the Alert Level from Watch to Advisory. |
| (12) Volcanic cloud height: | Unknown |
| (13) Other volcanic cloud information: | Unknown |
| (14) Remarks: | Visual observations of the caldera floor made on August 23 indicate that low level eruptive activity has also likely stopped. It is possible for vigorous ash emissions to resume at any time. |
| (15) Contacts: | John Power, Acting 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 http://www.avo.alaska.edu |
