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Wednesday, 19 November 2014

Pavlof Eruption


On 12 November increased seismicity lead to the eruption of Pavlof located in Alaska. The eruption began at 3:00 AKST. The ash plume height on the 12th reached 2.7km.

Alaska Volcano Observatory increased the Aviation Code to Orange and the Alert Level to watch. Lava fountains erupted from the vent in the north of the summit and rock avalanches travelled down the north flank of the volcano. On 15 November, the Aviation Code was increased from Orange to Red and the Alert Level from a watch to warning after the eruption intensified. The Ash plume reached an estimated 9 km.

On 16 November the intensity of the eruption decreased, the Aviation Code was dropped to Orange and the Alert Level was also dropped back down to a Watch. Seismic activity decreased and has continued to decrease over the past few days. Activity has paused or is minimal, however the threat of further activity exists since pauses between eruptions is in character with the volcano.


Source: Alaska Volcano Observatory

Source: Alaska Volcano Observatory

Source: Alaska Volcano Observatory

Source: Alaska Volcano Observatory

Source: Alaska Volcano Observatory

'NASA EO-1 Advanced Land Imager image high temperature flowage deposit on the northwest flank of Pavlof Volcano. This shortwave infrared image is sensitive to very high temperatures. This flowage deposit likely contains both new lava and hot rock debris, but the distribution has not yet been determined. The deposit extends for about 3.3 miles (5.4 km) from the vent'. Source: Alaska Volcano Observatory

Current RSAM, Source: Alaska Volcano Observatory

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