Volcano Update from Archive
AVO/USGS Volcanic Activity Notice
Volcano: Little Sitkin (CAVW #1101-05-)
Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: UNASSIGNED
Current Aviation Color Code: YELLOW
Previous Aviation Color Code: UNASSIGNED
Issued: Thursday, August 30, 2012, 4:20 AM AKDT (20120830/1220Z)
Source: Alaska Volcano Observatory
Notice Number: 2012/A10
Location: N 51 deg 57 min E 178 deg 32 min
Elevation: 3898 ft (1188 m)
Area: Aleutians Alaska
Volcanic Activity Summary: At approximately 19:15 AKDT (04:15 UTC) last night, a swarm of high-frequency earthquakes began at Little Sitkin Volcano. The continuation of this anomalous seismic activity through the night prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. No eruptive activity is currently indicated.
AVO is closely monitoring the situation and will issue further updates as conditions changes.
Little Sitkin is monitored by a 4-station seismic network as well as satellite imagery. Little Sitkin Island is located 35 km (21 mi) northwest of Amchitka and 320 km (200 mi) west of Adak in the remote western Aleutian Islands. The last eruption of Little Sitkin is questionable and may have been in the early 1900s.
Recent Observations:
[Volcanic cloud height] Unknown
[Other volcanic cloud information] Unknown
Remarks:
Contacts: John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497
Jeff Freymueller, Acting Coordinating Scientist, UAFGI
jeff@giseis.alaska.edu (907) 474-7286
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: Little Sitkin (CAVW #1101-05-)
Current Volcano Alert Level: ADVISORY
Previous Volcano Alert Level: UNASSIGNED
Current Aviation Color Code: YELLOW
Previous Aviation Color Code: UNASSIGNED
Issued: Thursday, August 30, 2012, 4:20 AM AKDT (20120830/1220Z)
Source: Alaska Volcano Observatory
Notice Number: 2012/A10
Location: N 51 deg 57 min E 178 deg 32 min
Elevation: 3898 ft (1188 m)
Area: Aleutians Alaska
Volcanic Activity Summary: At approximately 19:15 AKDT (04:15 UTC) last night, a swarm of high-frequency earthquakes began at Little Sitkin Volcano. The continuation of this anomalous seismic activity through the night prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. No eruptive activity is currently indicated.
AVO is closely monitoring the situation and will issue further updates as conditions changes.
Little Sitkin is monitored by a 4-station seismic network as well as satellite imagery. Little Sitkin Island is located 35 km (21 mi) northwest of Amchitka and 320 km (200 mi) west of Adak in the remote western Aleutian Islands. The last eruption of Little Sitkin is questionable and may have been in the early 1900s.
Recent Observations:
[Volcanic cloud height] Unknown
[Other volcanic cloud information] Unknown
Remarks:
Contacts: John Power, Scientist-in-Charge, USGS
jpower@usgs.gov (907) 786-7497
Jeff Freymueller, Acting Coordinating Scientist, UAFGI
jeff@giseis.alaska.edu (907) 474-7286
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: | (20120830/1220Z) |
| (3) Volcano: | Little Sitkin (CAVW# 1101-05-) |
| (4) Current Color Code: | YELLOW |
| (5) Previous Color Code: | unassigned |
| (6) Source: | Alaska Volcano Observatory |
| (7) Notice Number: | 2012/A10 |
| (8) Volcano Location: | N 51 deg 57 min E 178 deg 32 min |
| (9) Area: | Aleutians Alaska |
| (10) Summit Elevation: | 3898 ft (1188 m) |
| (11) Volcanic Activity Summary: | At approximately 19:15 AKDT (04:15 UTC) last night, a swarm of high-frequency earthquakes began at Little Sitkin Volcano. The continuation of this anomalous seismic activity through the night prompts AVO to raise the Aviation Color Code to YELLOW and the Volcano Alert Level to ADVISORY. No eruptive activity is currently indicated. AVO is closely monitoring the situation and will issue further updates as conditions changes. Little Sitkin is monitored by a 4-station seismic network as well as satellite imagery. Little Sitkin Island is located 35 km (21 mi) northwest of Amchitka and 320 km (200 mi) west of Adak in the remote western Aleutian Islands. The last eruption of Little Sitkin is questionable and may have been in the early 1900s. |
| (12) Volcanic cloud height: | Unknown |
| (13) Other volcanic cloud information: | Unknown |
| (14) Remarks: | |
| (15) Contacts: | John Power, Scientist-in-Charge, USGS jpower@usgs.gov (907) 786-7497 Jeff Freymueller, Acting Coordinating Scientist, UAFGI jeff@giseis.alaska.edu (907) 474-7286 |
| (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 |
