AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Summary | Webcams | Webicorders | RSAM | Activity Notifications | Notification Search | Cleveland | Shishaldin 
You are here: Home > Current Volcanic Activity > Archived Volcano Activity Notifications

AVO Archived Volcano Activity Notifications

2007
December
November
October
September
August
July
June
May
April
March
February
January
2006
December
November
October
September
August
July
June
May
April
March
February
January
2005
December
November
October
September
August
July
June
May
April
March
February
January
2004
December
November
October
September
August
July
June
May
April
March
February
January
2003
2002
2001
2000
1999
1998
1997
1996
December
November
October
September
August
July
June
May
April
March
February
January
1995
1994
1993
1992
December
November
October
September
August
July
June
May
April
March
February
January
1991
1990
1989
ARCHIVED REPORT
Printer friendly version

VENIAMINOF



Observers in Port Heiden were able to view Veniaminof on several days this week. No steam or ash clouds were visible above the volcano. On Tuesday, August 16, the National Weather Service received a pilot report of a plume possibly containing small amounts of ash rising 1000 feet above the volcano. Analysis of satellite imagery detected no hot spots at the volcano during the week.



KANAGA



Beginning early on the 18th, eruptive activity at Kanaga Volcano appears to have intensified. Pilots reported "glowing" at the summit of the volcano in the early morning. Throughout the day, pilots and U.S. Fish and Wildlife personnel observed an eruption cloud over the mountain consisting of a white, dominantly steam portion, which rose to an estimated 15,000 feet ASL and a vigorously roiling, gray, ash-bearing portion which rose an estimated 8-10,000 feet. A loud rumbling, similar to the sound of a freight train, was heard in Adak all afternoon and into the evening. Prevailing winds carried the plume to the northeast and a light curtain of fallout was observed. A satellite image from approximately 2000 ADT on August 18 showed a plume drifting northeast from the volcano. However, no fallout was reported in Adak. The hot spot at the summit of the volcano, which yesterday appeared to have doubled in size, persists on a satellite image from 1004 ADT this morning. No plume is visible today, although cluod cover may obscure it. U.S. Fish and Wildlife observers report continued rumbling from the direction of the volcano.



COOK INLET VOLCANOES



Seismic activity at Spurr, Augustine, Redoubt and Iliamna

volcanoes remains at normal levels. AVO field crews are performing maintenance work at instrument sites on Spurr and Redoubt volcanoes today.



The Alaska Volcano Observatory continues to seismically

monitor Spurr, Augustine, Redoubt and Iliamna volcanoes.

We maintain a computerized alarm system that is capable of

notifying AVO seismologists during non business hours

should unusual seismic activity occur.

VOLCANO ALERT LEVELS
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.

AVIATION COLOR CODES
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].

PDF version of these definitions
Contact AVO Privacy Accessibility Information Quality FOIA
URL: avo.alaska.edu/activity/avoreport_archives.php
Page modified: May 27, 2014 10:23
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS