Pavlof reported activity

Start:	May 13, 2013	Observed
Stop:	July 26, 2013	Observed

Lava flow:
Lahar, debris-flow, or mudflow:
Tephra plume:

Eruption Type:	Effusive
ColHeight:	8500 m
Other	""

Description: On May 13, 2013, the Alaska Volcano Observatory reported that seismic activity at Pavlof increased that morning, along with the presence of an intense thermal anomaly at its summit. AVO raised the aviation level of concern color code to ORANGE and the alert level to WATCH.

On May 14, pilot reports and satellite imagery revealed a small lava flow at Pavlof, confirming eruption onset.

Elevated seismic activity, lava fountaining, and occasional steam, gas, and ash plumes to 22,000 ft (6700 m) continued until about May 24. The lava flow extended about 1 mi (1.5 km) down the north flank of the volcano. Trace amounts of ash fell on the nearby community of Sand Point on the evening of May 19, and on the community of Sand Point May 20, 21, and 22.

On May 21, seismicity transitioned from tremor to discrete events which faded away over the next couple days. Satellite imagery for Pavlof was cloudy May 25, 26, 27, and 28.

On May 28, citing dramatic reductions in seismicity and surface temperatures, AVO lowered the aviation color code to YELLOW and the alert level to Advisory.

On June 4, AVO raised the level of concern color code to ORANGE and the alert level to WATCH, due to pilot reports and satellite imagery showing an ash cloud to 19,000 ft. Weak seismicity accompanied the ash emission. Low-level seismic tremor and minor emissions of ash, gas, and steam continued through June. In late June and early July, the eruptive activity greatly declined. On July 2, 2013, AVO lowered the volcano alert level to WATCH and the aviation color code to YELLOW. The month of July passed without indications of lava or ash emissions. On August 8, 2013, AVO lowered the volcano alert level to NORMAL and the aviation color code to GREEN.