• Moderate eruption detected at Cleveland volcano, Alaska

    A moderate, 2-minute-long eruption occurred at Cleveland volcano, Alaska beginning at 01:47 UTC on September 26, 2017. The explosion was detected by seismic and infrasound (air pressure) sensors, the Alaska Volcano Observatory said 02:15 UTC today, adding that…

  • Short-lived eruption at Cleveland volcano, Alaska

    A short-lived explosion was detected in seismic and infrasound data at Cleveland volcano at 03:38 UTC on May 17, 2017. The increase in seismicity lasted about 10 minutes. The ash cloud was observed in satellite data drifting to the southwest for approximately 5…

  • Explosion at Cleveland volcano, alert levels raised

    Mount Cleveland stratovolcano in Alaska erupted at 21:10 UTC on October 24, 2016, forcing the Alaska Volcano Observatory (AVO) to raise the color code/alert level from Yellow/Advisory to Orange/Watch. The explosion was detected in both infrasound (air pressure) and…

  • New activity at Mt. Cleveland volcano on Aleutian Islands

    Alaska Volcano Observatory (AVO) infrasound detected 2-3 possible explosion at Cleveland Volcano early on May 4, 2013. The infrasound signals suggest that this was a relatively short duration, low-level explosion. A small, low-altitude ash cloud along with high