Kasatochi erupts

Just a quick update if you haven’t been following the discussion: Kasatochi volcano in the Aleutians is now listed in “Red Alert” as it is erupting (see image above). Not many details beyond the typical description of ash columns, in this case reaching 45,000 feet, which is a pretty decent height. The Coast Guard warns of pumice rafts from the eruption, but it is hard to tell if it because they exist, or that it is just the generic warning for any eruption at sea. The two USFS biologists were evacuated before the eruption.

Edit 8/8/08: I’ll add a link to the official USGS Press Release on the Kasatochi eruption. So far, it seems like another volcano that went from no indications of activity to eruption in a fairly short period (< 24 hours).


  1. #1 Philip_B
    August 9, 2008

    Google Earth shows a large number of earthquakes over the last couple of days around and to the south of the island .Perhaps a hundred.

    Requires USGS plugin for GE.

  2. #2 Erik Klemetti
    August 9, 2008

    Looks like we might have a longer seismic trail once the data is fully analyzed. It also looks like some of the earthquakes were as big at M5.8, which is impressive if they are directly volcanically related.

  3. #3 Ric MacNeil
    August 9, 2008

    I am currently on Adak, about 50 miles from Kasotochi. It has been overcast here since the eruption. No visibility of the plume. Slight sulfur smell at times depending on wind direction. Multiple earthquakes the morning of the eruption and several noticable ones since. We had a 5.4 magnitued earthequake this morning, but not associated with the volcano.

  4. #4 Erik Klemetti
    August 9, 2008

    Thanks for the update from the field, Ric!

  5. #5 David
    August 9, 2008

    i live here in ca will i get ash from the Kasatochi volcano ????

  6. #6 Erik Klemetti
    August 9, 2008

    David, you’re not going to get any ash from the Kasatochi eruption. Well, you might be one flake of ash, but nothing you might ever notice!

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