AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Summary | Webcams | Webicorders | RSAM | Activity Notifications | Notification Search | Cleveland | Shishaldin | Pavlof 
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

PAVLOF VOLCANO



LEVEL OF CONCERN COLOR CODE: ORANGE

LAST LEVEL OF CONCERN: ORANGE



Eruptive activity continues at Pavlof Volcano. Seismicity, satellite imagery, and pilot reports indicate ongoing lava fountaining from two vents near the summit of the volcano. Early this week, AVO staff filmed intermittent bursts of lava to heights of less than 1000 feet above the crater. These bursts result in a diffuse ash layer that pilots report to be typically below 20,000 feet ASL and extending perhaps as far as 100 miles downwind. A lava flow courses down the steep, snow- and ice-covered slope of the volcano, widening at the base and extending northwest. Based on the level of seismicity and the nature of this current eruption, lava fountaining, lava flows, and localized, diffuse ash clouds are likely to continue to monitor the volcano closely.



Pavlof is located 600 miles southwest of Anchorage. The nearest towns to the volcano are Cold Bay (37 mi SW), King Cove (30 mi SW), Sand Point (60 mi E), and Nelson Lagoon (50 mi NE). These towns could expect light ash fall depending on wind direction and level of eruptive activity. Mudflows and some flooding could occur near the volcano. The hazard to aircraft from airborne ash may be considerable if a large explosive event occurs, however during the more typical lava fountaining activity at present, this hazard is minor.



COOK INLET VOLCANOES

ILIAMNA VOLCANO



The seismic swarm that began on 1 August 1996 beneath Iliamna Volcano continued during the past week at an average rate of about 6 earthquakes per day. All events were less than 10 km deep with magnitudes of less than 1.0. All earthquakes have been volcano-tectonic (VT); no long-period earthquakes or tremor that usually precede volcanic eruptions have been observed. This seismicity is likely related to an intrusion of magma beneath Iliamna, however such an intrusion does not mean an eruption is imminent.



Seismic activity at Spurr, Redoubt, and Augustine volcanoes remains at normal background levels.



ADDITIONAL INFORMATION



AVO maintains a computerized alarm system capable of

notifying AVO seismologists during non-business hours

should unusual seismic activity occur at Spurr, Iliamna,

Augustine, or Akutan volcanoes. AVO continues to test new seismic networks at Pavlof, Dutton, Makushin, Akutan, and Katmai area volcanoes. Reports on these volcanoes will be added to this update as data acquisition and analysis become reliable. We anticipate that this will occur by mid-November.

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