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Cleveland: Color Code GREEN Alert Level NORMAL
Local time: September 23, 2023 1630 AKDT (September 24, 2023 0030 UTC)
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COLOR CODE TIMELINE
08-25-2023 10:06
07-19-2023 12:18
01-05-2023 11:09
05-10-2022 16:19
10-20-2021 15:04
03-20-2021 13:44
09-02-2020 17:40
06-17-2020 11:56
06-01-2020 23:46
05-07-2020 15:37
11-15-2019 12:16
11-08-2019 11:33
02-25-2019 11:24
01-17-2019 11:25
01-07-2019 12:46
12-12-2018 12:21
08-22-2018 11:45
06-26-2018 13:07
05-06-2018 12:16
05-04-2018 22:20
04-06-2018 10:31
04-04-2018 04:35
03-06-2018 12:33
03-06-2018 12:06
03-05-2018 13:14
03-02-2018 06:38
02-09-2018 13:44
12-13-2017 06:15
12-12-2017 12:31
07-04-2017 04:05
06-26-2017 12:06
04-24-2017 11:43
04-05-2017 11:41
03-24-2017 11:24
03-08-2017 11:44
02-03-2017 14:05
11-04-2016 12:27
10-24-2016 14:19
06-03-2016 11:12
05-05-2016 19:35
04-29-2016 11:36
04-16-2016 11:55
10-14-2015 09:41
07-21-2015 09:13
06-17-2015 12:21
05-28-2015 10:14
01-11-2014 14:21
01-10-2014 13:34
01-10-2014 13:31
01-02-2014 11:19
06-04-2013 15:11
05-04-2013 06:13
03-08-2013 10:40
02-06-2013 12:18
11-21-2012 07:50
11-10-2012 19:40
09-05-2012 12:14
06-19-2012 15:06
05-30-2012 11:11
03-28-2012 15:16
03-23-2012 10:00
01-31-2012 15:21
12-30-2011 13:57
12-29-2011 07:55
11-03-2011 11:16
09-06-2011 16:08
08-30-2011 13:02
08-02-2011 15:43
07-20-2011 14:48
03-31-2011 12:07
09-12-2010 11:26
09-10-2010 10:42
08-26-2010 15:52
06-11-2010 11:28
05-25-2010 17:17
10-19-2009 12:47
10-05-2009 15:20
10-03-2009 03:29
07-15-2009 15:11
06-27-2009 17:13
06-25-2009 15:00
05-01-2009 09:31
12-24-2008 13:22
10-09-2008 13:59
08-25-2008 15:51
08-11-2008 14:52
08-06-2008 12:16
07-21-2008 14:16
03-27-2008 17:44

CODE DEFINITIONS
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.
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.
More information on color/alert definitions

AVO monitors seismic activity at potentially active volcanoes across Alaska and calculates locations and magnitudes for earthquakes (typically magnitude 3.0 and below) near the 32 active volcanoes where AVO operates seismic networks.

A geophysicist reviews each location and magnitude before it is released, therefore AVO’s locations may not be available for up to 2 or 3 days after the event, although larger earthquakes can be processed sooner.

Other organizations such as the Alaska Earthquake Center (AEC) at the University of Alaska Fairbanks Geophysical Institute (UAF/GI) and the USGS National Earthquake Information Center (NEIC) also locate the larger (magnitude >2.5) earthquakes.Because each organization uses slightly different techniques to calculate locations and magnitudes, the initial published locations and magnitudes may differ slightly for the same earthquake. The Advanced National Seismic System (ANSS) coordinates earthquake information from these organizations and keeps the Comprehensive Earthquake Catalog, a publicly available archive with detailed and complete information on all located earthquakes nation-wide: earthquake.usgs.gov/data/comcat/

CLEVELAND UPDATES
GREEN/NORMAL 08-25-2023 11:30 AKDT - Weekly Update
GREEN/NORMAL 08-25-2023 10:06 AKDT - VONA
YELLOW/ADVISORY 08-24-2023 11:05 AKDT - Daily Update
YELLOW/ADVISORY 08-23-2023 10:43 AKDT - Daily Update
YELLOW/ADVISORY 08-22-2023 10:46 AKDT - Daily Update
YELLOW/ADVISORY 08-21-2023 11:51 AKDT - Daily Update
YELLOW/ADVISORY 08-20-2023 12:11 AKDT - Daily Update
YELLOW/ADVISORY 08-19-2023 11:38 AKDT - Daily Update

All Cleveland Reports

Color Code and Alert Level Definitions

ASHFALL AND ASH CLOUD FORECASTS: MODEL OUTPUT
Mathematical models developed by the USGS forecast various aspects of how a volcanic ash plume will interact with wind—where, how high, and how fast ash particles will be transported in the atmosphere, as well as where ash will fall out and accumulate on the ground. AVO runs these models when a volcano is restless by assuming a reasonable hypothetical eruption, to provide a pre-eruptive forecast of areas likely to be affected. During an ongoing eruption, AVO will update the forecast with actual observations (eruption start time and duration, plume height) as they become available. Click on individual graphics to learn more.
ASHFALL FORECASTS
ASHFALL FORECAST
REPORTED ASHFALL

ASH CLOUD FORECASTS (AIRBORNE):
CLOUD HEIGHT
CLOUD LOAD
THESE PRODUCTS MAY NOT BE CURRENT.
During an actual eruption, see National Weather Service forecasts of airborne ash hazard to aircraft (SIGMETS: https://weather.gov/aawu/ and Volcanic Ash Advisories: https://weather.gov/vaac) as well as forecasts of ash fall: https://weather.gov/afc.
INSTRUMENT DATA

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URL: www.avo.alaska.edu/activity/Cleveland.php
Page modified: July 19, 2023 11:38
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