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Semisopochnoi volcano
Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Current status: restless (2 out of 5)
Semisopochnoi webcams / live data | Reports
Semisopochnoi volcano books
Semisopochnoi volcano eruptions:
2018, 1987
Typical eruption style:
unspecified
Last earthquakes nearby
Latest satellite images
 

Semisopochnoi volcano news & activity updates:

Semisopochnoi volcano Volcanic Ash Advisory: N/A

Friday Oct 26, 2018 18:45 PM |

Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report:

FVAK21 at 18:36 UTC, 26/10/18 from PAWU
VAAAK1
VA ADVISORY

DTG: 20181027/1836Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2018/004

INFO SOURCE: HIMAWARI

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: N/A

OBS VA DTG: 26/1836Z

OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE

FCST VA CLD +6HR: 26/1730Z NO VA EXP

FCST VA CLD +12HR: 26/2330Z NO VA EXP

FCST VA CLD +18HR: 27/0530Z NO VA EXP

RMK: NONE

NXT ADVISORY: NO FURTHER ADVISORIES

BH OCT 2018 AAWU

Previous news
Seismic signal from Semisopochnoi volcano this morning, showing the eruption (image: AVO)
Friday, Oct 26, 2018
A small eruption occurred at the volcano this morning (21:00 pm local time) and was detected in seismic data. The Alaska Volcano Observatory (AVO) reports: ... [more]
Satellite image of Semisopochnoi volcano on 26 Oct 2018
Friday, Oct 26, 2018
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ... [more]
Friday, Oct 12, 2018
AVO has lowered the Aviation Color Code and Alert Level to YELLOW/ADVISORY due to satellite observations and a lack of tremor lately indicating that eruptive activity has stopped. Elevated seismicity continues. [more]
Wednesday, Oct 03, 2018
On September 16, AVO raised the volcano to Aviation Color Code YELLOW and Volcanic Alert Level ADVISORY due to increased seismicity. The following day, activity increased further, with bursts of tremor; AVO raised the Aviation Color Code to ORANGE and Volcanic Alert Level to WATCH. Subsequent satellite imagery showed ash deposits and a new tephra cone on the northern cone of Mount Cerberus, one of the cones of the volcanic system. No significant emissions have been detected. [more]
Tuesday, Jun 02, 2015
A decline in seismicity over the last few months and no sign of activity in daily satellite images prompts AVO to downgrade Semisopochnoi volcano from Aviation Color Code YELLOW and Volcanic Alert Level ADVISORY to UNASSIGNED. (USGS) [more]
 

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