Get our newsletter!
Check out our volcano tours on VolcanoAdventures.com!
Volcanoes & Earthquakes - new app for Android
Volcanoes & Earthquakes - app for iPhone & iPad

Volcano Calendar 2019
Volcano Calendar 2019: We're proud to present our 2019 volcano calendar: 13 different and attractive images of volcanoes, volcanic landscapes and phenomena taken during volcano tours over the past few years.
Our New Book
Volcano Discoveries: "One of the most eye-catching guides to the world’s volcanoes ever published.
Volcano Travel
VolcanoAdventures: Our professional team of volcanologists and photographers offers unique travel opportunities: volcano expeditions, photo tours, and relaxed walking & study tours.
Volcano Adventure Guide
The Volcano Adventure Guide: Excellent information and background for anyone wishing to visit active volcanoes safely and enjoyably. The book presents guidelines to visiting 42 different volcanoes around the world.
Guaranteed tours:
1-19 Sep 2019: Kamchatka - Land of Colors - Kamchatka (Russia)
3-18 Sep 2019: From Krakatau to Bali - Java (Indonesia)
21-28 Sep 2019: Pearl of the Aegean - Santorini - Santorini Island (Greece)
12-20 Oct 2019: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
2-18 Nov 2019: Volcanoes and Spices - N-Sulawesi + Halmahera (Indonesia)
17-21 Nov 2019: Krakatau Volcano Special - Krakatau volcano (Indonesia)
17-30 Nov 2019: Desert, salt and volcanoes - Danakil desert (Ethiopia)
9-17 May 2020: From Stromboli to Etna - Eolian Islands + Etna volcano (Italy)
: spaces available / : guaranteed / : few spaces left / : booked out
Random pictures
News
Semisopochnoi volcano (Alaska): increased seismic activity, steam clouds
Wednesday, Aug 07, 2019
AVO reported that during 31 July-6 August seismicity at the volcano remained elevated and was characterized by periods of weak, continuous tremor and discrete low-frequency earthquakes. Satellite images were mostly cloudy, though a possible steam plume was visible during 5-6 August. ... [more]
Semisopochnoi volcano (Alaska): alert level raised to yellow
Saturday, Jul 06, 2019
Yesterday, the Alaska Volcano Observatory raised the alert level of the volcano due to an increase in seismicity above background levels. ... [more]
 

Semisopochnoi volcano

Stratovolcano 1221 m / 4,006 ft, United States, Aleutian Islands, 51.93°N / 179.58°E
Nearby recent earthquakes (within 30km radius):

Earthquake list: past 7 days (only M>=-0.8)

Jump to quake statistics
 | archive: show
Updated: Sat, 17 Aug 22:43 UTC (GMT)
TimeMag. / DepthDistanceLocationMapSource
No recent earthquakes in our database

Earthquake statistics

Number of earthquakes vs time:

Past 24 hrs:
Number of quakes and energy past 24 hours
Past 30 days:
Number of quakes and energy past 30 days
Past 90 days:
Number of quakes vs time
Magnitude distribution and energy released:
Past 24 hrs:
Number of quakes and energy vs magnitude past 24 hrs Magnitudes of quakes and energy vs time past 24 hrs
Past 7 days:
Number of quakes and energy vs magnitude past 7 days Magnitudes of quakes and energy vs time past 7 days
Past 30 days:
Number of quakes and energy vs magnitude past 30 days Magnitudes of quakes and energy vs time past 30 days
 

More on VolcanoDiscovery:

Volcano Webcam images
Latest volcano webcam image: Many volcanoes can be observed in real-time using webcams. Look at the latest images collected from our volcano webcam viewer tool.
Plate Tectonics
Introduction to Plate Tectonics: The Earth's upper, rigid layer is broken into several plates which are in constant motion to one another. Most earthquakes and volcanoes occur as result of these plate boundaries.
Reviews
What clients have said: Browse through feedback about our tours from customers, read what they have said about us!
Volcano Videos
Visit our video channel on youtube!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.