Moderate eruption of Cleveland volcano, Alaska on September 25

A moderate, 2-minute-long eruption occurred at Cleveland Volcano beginning at 17:47 September 25 AKDT (01:47 September 26 UTC).

The explosion was detected by seismic and infrasound (air pressure) sensors. Nothing has been observed in satellite data so far.

The Cleveland volcano in Alaska erupted on September 25 2017, cleveland volcano eruption september 25 2017, cleveland volcano eruption september 25 photo, cleveland volcano eruption september 25 video
The Cleveland volcano in Alaska erupted on September 25, 2017. via AVO

The Aviation Color Code/Alert Level was kept at ORANGE/WATCH.

Cleveland volcano is not monitored with a full real-time seismic network and this inhibits AVO’s ability to detect unrest that may lead to future activity. We are able to detect explosive activity using infrasound and limited seismic instruments on the island.

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