Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Guaranteed tours:
9-22 Feb 2019: Desert, salt and volcanoes - Danakil desert (Ethiopia)
2-17 May 2019: From Krakatau to Bali - Java (Indonesia)
4-11(12) May 2019: Fascination Volcano - Santorini Island (Greece)
4-12 May 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
11-19 May 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
7-12 Jun 2019: Adventure Volcano - Yasur Volcano Travel - Tanna Island (Vanuatu)
8-16 Jun 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
14-30 Jun 2019: Volcanoes and Spices - N-Sulawesi + Halmahera (Indonesia)
8-23 Jul 2019: From Krakatau to Bali - Java (Indonesia)
13-29 Aug 2019: Volcanoes and Spices - N-Sulawesi + Halmahera (Indonesia)
: spaces available / : guaranteed / : few spaces left / : booked out
Random pictures
Semisopochnoi volcano
Stratovolcano 1221 m / 4,006 ft
United States, Aleutian Islands, 51.93°N / 179.58°E
Current status: normal or dormant (1 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: 201810260447Z

Friday Oct 26, 2018 05:45 AM |

Satellite image of Semisopochnoi volcano on 26 Oct 2018
Satellite image of Semisopochnoi volcano on 26 Oct 2018
Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report:

FVAK21 at 05:38 UTC, 26/10/18 from PAWU
VAAAK1
VA ADVISORY

DTG: 20181026/0533Z

VAAC: ANCHORAGE

VOLCANO: SEMISOPOCHNOI 311060

PSN: N5156 E17935

AREA: ALEUTIAN ISLANDS

SUMMIT ELEV: 4006 FT [1221 M]

ADVISORY NR: 2018/001

INFO SOURCE: HIMAWARI/SEISMOGRAPH/AVO

AVIATION COLOR CODE: ORANGE

ERUPTION DETAILS: 201810260447Z

OBS VA DTG: 26/0533Z

OBS VA CLD: SFC/FL120 N5145 E17831 - N5104 W17945 - N5016 E17904
- N5117 E17734 - N5145 E17831 MOV SE 30KT.

FCST VA CLD +6HR: 26/1133Z SFC/FL120 N5138 E17904 - N4948 W17646
- N4853 W17833 - N5116 E17753 - N5138 E17904 - N5138 E17904.

FCST VA CLD +12HR: 26/1733Z NO VA EXP.

FCST VA CLD +18HR: 26/2333Z NO VA EXP.

RMK: T+0 CONFIDENCE LOW. VA APPEARS TO HAVE MADE IT JUST ABOVE THE
OCEANIC STRATUS FIELD.

NXT ADVISORY: WILL BE ISSUED BY 20181026/1133Z

DH OCT 2018 AAWU

Previous news
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]
Current seismic signal at Semisopochnoi (AVO)
Thursday, Mar 26, 2015
The Alaska volcano observatory (AVO) detected significantly increased earthquake activity under the volcano and warns of a possible eruption: ... [more]
Current seismic activity (CEAP station / AVO)
Wednesday, Jul 23, 2014
Earthquakes have decreased but are still above background levels. No eruptive activity has been recorded. Alert level remains yellow. [more]

More on VolcanoDiscovery:

Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Text and images on this webpage are copyrighted. Further reproduction and use without authorization is not consented. If you need licensing rights for photographs, for example for publications and commercial use, please contact us.
Home | Travel | Destinations | Volcanoes | Photos | Earthquakes | About | Glossary | News | Contact | Privacy | Imprint || Français | Deutsch
Follow us: