Seismic activity of the volcano, the size and temperature of the thermal anomaly decreased after explosive eruption on August 19. The activity of the volcano still could affect low-flying aircraft.

Moderate eruption of the volcano occurred 10:30-11:15 UTC on August 19. Seismic activity was above background levels during this day. Thermal anomaly became much larger immediately before the eruption. According to satellite data, ash plume rose up to 9 km. Ash cloud 125x35 km was moving 1300 km (806 mi) to the west from the volcano. Staff of seismic station in Kozyrevsk (50 km to the west from the volcano) reported ashfall and smell of volcanic gas.
Seismic activity of the volcano was slightly above background levels on August 14, 16-18; at background levels on August 15, 20-21. According to satellite data, a thermal anomaly was registered over the lava dome on August 14, 15, 18-21. According to visual data, clouds obscured the volcano all week.

KARYMSKY VOLCANO: 54°03'N, 159°27'E; Elevation 1,486 m.
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE

Activity of the volcano continues and ash explosions up to 6.0 km (or 19,700 ft.) ASL are possible. The explosive activity of the volcano could affect low-flying aircraft in the vicinity of the volcano.

Seismic activity of the volcano was above background levels on August 14, 15, 17, 19; slightly above background levels on August 20; at background levels on August 16, 18. According to seismic data, possible ash-gas explosions up to 3 km (9,800 ft) ASL occurred at the volcano on August 14-15, 17-20. Weak intermittent volcanic tremor was registered on August 14, 20.

SHEVELUCH VOLCANO: 56°38'N, 161°19'E; Elevation 3,283 m, the dome elevation ~2,500 m.
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE

Activity of the volcano continues and ash explosions up to 10 km (32,800 ft.) ASL could occur at any time. The activity of the volcano could affect international and low-flying aircraft.

Seismicity was slightly above background levels all week: volcanic earthquakes and a weak volcanic tremor were registered at the volcano all week, possible ash-gas explosion up to 4.5 km (14,800 ft) ASL occurred at the volcano on August 14. According to visual data, clouds obscured the volcano all days of the week. According to satellite data, a thermal anomaly was registered over the lava dome on August 15, 18, 21.

KLYUCHEVSKOY VOLCANO; 56° 03'N, 160° 39'E; Elevation 4,750 m
CURRENT LEVEL OF CONCERN COLOR CODE IS YELLOW

Seismic activity of the volcano has been gradually increasing since June. The activity of the volcano, possibly, could affect international and low-flying aircraft.

Seismic activity of the volcano was slightly above background levels all week: a lot of volcanic earthquakes and intermittent volcanic tremor were registered at the volcano all week. According to visual data, clouds obscured the volcano all days. According to satellite data, a thermal anomaly was registered over the volcano on August 14, 15, 18, 20-21.

CHIKURACHKI VOLCANO 50°19'N, 155°28'E; Elevation 1,816 m
CURRENT LEVEL OF CONCERN COLOR CODE IS ORANGE

Eruptive activity of the volcano continues. Ash explosions up to 6 km (or 19,700 ft.) ASL are possible. The activity of the volcano could affect low-flying aircraft.

Chikurachki volcano is not monitored with seismic instruments. KVERT has satellite monitoring and receives occasional visual observations of this volcano.

According to satellite data, clouds obscured the volcano all week.

IF YOU HAVE ANY QUESTIONS OR CONCERNS, PLEASE CONTACT:

Alexander Manevich, KVERT, IVS FED RAS
E-mail: mag@kscnet.ru
Tel. (41522) 58325

Sergey Senyukov, KVERT, KB GS RAS
E-mail: ssl@emsd.ru
Tel. (41522) 59523

John Power, Scientist-in-Charge, AVO
E-mail: jpower@usgs.gov
Tel. 907-786-7497

The Kamchatkan Volcanic Eruption Response Team (KVERT) is a non-commercial cooperative program of the Alaska Volcano Observatory (AVO, USA), the Institute of Volcanology and Seismology (IVS) FED RAS and the Kamchatkan Branch of Geophysical Survey (KB GS) RAS (Russia). KVERT staff is available in the office from 8:30 AM till 6:00 PM (KST or KDT) and by phone during the evenings. KVERT uses daily satellite imagery, information from remote scientific observation stations, real-time
seismic data for 10 volcanoes, and other information to monitor activity at Kamchatkan and Northern Kuriles Volcanoes.

The official web-page of KVERT (the Institute of Volcanology and Seismology FED RAS): http://www.kscnet.ru/ivs/kvert/index_eng.php
Archive of daily information KB GS RAS: ftp://emsd.iks.ru/pub/DATA/RTS/Volcanoes
KVERT Information Releases at the web-page of AVO (Alaska Volcano Observatory): http://www.avo.alaska.edu/activity/avoreport.php?view=kaminfo