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

ALASKA VOLCANO OBSERVATORY

CURRENT STATUS REPORT

Thursday August 5, 2004 3:50 PM ADT (23:50 UTC)



ALASKA VOLCANOES WITH ELEVATED COLOR CODES



MOUNT SPURR VOLCANO (CAVW#1103-04)

6118' N 15215' W, Summit Elevation 11,070 ft (3,374 m)

Current Level of Concern Color Code: YELLOW



Elevated levels of seismicity continue to be recorded beneath the summit

of Mount Spurr volcano. Clouds obscured satellite views of the volcano

today, and no additional visual observations were made. There are no

indications that an eruption is imminent. Often this type of seismicity

will decline without producing an eruption.



MOUNT VENIAMINOF VOLCANO (CAVW #1102-07)

5610'N 15923'W, Intracaldera Cone Elevation 7,073 ft (2,156 m)

Current Level of Concern Color Code: YELLOW



Tremor bursts and episodes of sustained tremor were recorded

intermittently throughout the day. Based on previous observations, some of

these episodes likely represent ash/steam emissions rising to less than

10,000 ft. above sea level, though a few have been reported to reach as

high as 12,000 ft. Clouds obscured the active crater in satellite and web

camera views today. Activity at Mount Veniaminof can increase quickly and

small ash emissions may occur with little or no warning. Such emissions

could pose a hazard to people and low flying aircraft in the vicinity of

the caldera.



SHISHALDIN VOLCANO (CAVW #1101-36)

5445'N 16358'W, Summit Cone Elevation 9,373 ft (2,857 m)

Current Level of Concern Color Code: YELLOW



Low-level seismic tremor continues to be recorded at Shishaldin Volcano.

Activity has changed little over the past several months. Clouds obscured

Shishaldin in satellite data. There are no indications that more vigorous

volcanic activity is imminent. Activity at Shishaldin can, however,

increase quickly and small ash emissions could occur with little or no

warning that pose a hazard to people and low-flying aircraft in the

immediate vicinity of the summit.



VOLCANO INFORMATION ON THE INTERNET: http://www.avo.alaska.edu RECORDING

ON

THE STATUS OF ALASKA'S VOLCANOES (907) 786-7478



CONTACT INFORMATION:



Tom Murray, Scientist-in-Charge, USGS

tlmurray@usgs.gov (907) 786-7497



Jeff Freymueller, Acting Coordinating Scientist, UAF-GI

jeff@giseis.alaska.edu; (907) 474-7286



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 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