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

VOLCANO ACTIVITY NOTIFICATIONS

2014
July (29 reports)
June (36 reports)
May (32 reports)
April (30 reports)
March (32 reports)
February (30 reports)
January (35 reports)
2013
December (33 reports)
November (31 reports)
October (34 reports)
September (32 reports)
August (34 reports)
July (32 reports)
June (37 reports)
May (36 reports)
April (30 reports)
March (35 reports)
February (30 reports)
January (33 reports)
2012
December (31 reports)
November (32 reports)
October (31 reports)
September (31 reports)
August (32 reports)
July (31 reports)
June (32 reports)
May (32 reports)
April (30 reports)
March (35 reports)
February (29 reports)
January (9 reports)
2011
December (27 reports)
November (31 reports)
October (31 reports)
September (30 reports)
August (31 reports)
July (15 reports)
June (4 reports)
May (4 reports)
April (5 reports)
March (31 reports)
February (28 reports)
January (31 reports)
2010
December (31 reports)
November (30 reports)
October (31 reports)
September (30 reports)
August (9 reports)
July (5 reports)
June (14 reports)
May (9 reports)
April (13 reports)
March (4 reports)
February (4 reports)
January (10 reports)
2009
December (9 reports)
November (9 reports)
October (25 reports)
September (31 reports)
August (29 reports)
July (35 reports)
June (34 reports)
May (37 reports)
April (34 reports)
March (58 reports)
February (30 reports)
January (39 reports)
2008
December (32 reports)
November (32 reports)
October (36 reports)
September (32 reports)
August (46 reports)
July (45 reports)
June (30 reports)
May (32 reports)
April (33 reports)
March (35 reports)
February (37 reports)
January (35 reports)
2007
2006
2005

Older reports can be found here.

Report Text
Printer friendly version

AVO/USGS Volcanic Activity Notice

Volcano: Cleveland (CAVW #1101-24-)

Current Volcano Alert Level: ADVISORY

Current Aviation Color Code: YELLOW

Issued: Friday, January 2, 2009, 12:51 PM AKST (20090102/2151Z)
Source: Alaska Volcano Observatory
Notice Number: 2009/A1
Location: N 52 deg 49 min W 169 deg 56 min
Elevation: 5676 ft (1730 m)
Area: Aleutians Alaska

Volcanic Activity Summary: A brief but explosive ash emission was detected in satellite images of Cleveland Volcano this morning. An ash plume was apparent in images obtained at 1645 UTC, 1809 UTC, 1812 UTC, and 1823 UTC. The ash plume reached an altitude of about 6 km (20,000 ft) drifted east-southeast about 240 km (150 mi) and dispersed over the North Pacific.

Recent Observations:
[Volcanic cloud height] 6 km but no longer visible in satellite images.
[Other volcanic cloud information] Ash cloud dispersed rapidly over the North Pacific and presently can not be detected.

Remarks: This was a brief, short-lived, but explosive ash emission event from Cleveland Volcano and is typical of the type of events observed at this volcano in the past. Because the event was brief and the ash plume was relatively low level and dispersed rapidly AVO is not raising the color code or alert level.

Contacts: Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497

Jon Dehn, Acting Coordinating Scientist, UAFGI
jdehn@gi.alaska.edu (907) 474-6499

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:(20090102/2151Z)
(3) Volcano:Cleveland (CAVW# 1101-24-)
(4) Current Color Code:YELLOW
(5) Previous Color Code:yellow
(6) Source:Alaska Volcano Observatory
(7) Notice Number:2009/A1
(8) Volcano Location:N 52 deg 49 min W 169 deg 56 min
(9) Area:Aleutians Alaska
(10) Summit Elevation:5676 ft (1730 m)
(11) Volcanic Activity Summary:A brief but explosive ash emission was detected in satellite images of Cleveland Volcano this morning. An ash plume was apparent in images obtained at 1645 UTC, 1809 UTC, 1812 UTC, and 1823 UTC. The ash plume reached an altitude of about 6 km (20,000 ft) drifted east-southeast about 240 km (150 mi) and dispersed over the North Pacific.
(12) Volcanic cloud height:6 km but no longer visible in satellite images.
(13) Other volcanic cloud information:Ash cloud dispersed rapidly over the North Pacific and presently can not be detected.
(14) Remarks:This was a brief, short-lived, but explosive ash emission event from Cleveland Volcano and is typical of the type of events observed at this volcano in the past. Because the event was brief and the ash plume was relatively low level and dispersed rapidly AVO is not raising the color code or alert level.
(15) Contacts:Tom Murray, Scientist-in-Charge, USGS
tlmurray@usgs.gov (907) 786-7497

Jon Dehn, Acting Coordinating Scientist, UAFGI
jdehn@gi.alaska.edu (907) 474-6499
(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
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].
Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/activity/avoreport.php
Page modified: May 16, 2014 09:40
Contact Information: AVO Web Team

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