Correction, sorry

VONA/KVERT Operative Report: Plosky Tolbachik volcano

Issued: 20130106/2355Z
Volcano: Plosky Tolbachik
 (CAVW #1000-24-)

Aviation Color Code: ORANGE

Source: KVERT
Notice Number: 2013/02

Volcano Location: 55.83 N, 160.39 E
Area: Kamchatka, Russia
Summit Elevation : 10118.8 ft (3085 m)

Height of ash plume : 13120 ft (4 km) a.s.l.
Time and method of ash plume height determination: 20130106/2326Z – Video data

Distance of ash plume of the volcano: 12 mi (20 km)
Direction of ash plume or ash cloud drift from the volcano: Nord-East
Time and method of ash plume observation: 20130106/2326Z – Video data

Eruption is continuing

Remarcs: Gas-steam plume containing small amount of ash raises up to 4 km a.s.l. from the active cinder cone at Tolbachinsky Dol and extends to the north-east of the volcano. Activity of the volcano could affect low-flying aircraft.

Contacts: Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS
Tel.: +74152297890

Tel. Duty scientist: +79622825253

In Russia, KVERT, on behalf of the Institute of Volcanology and Seismology (IVS) FED RAS, is responsible for providing information on volcanic activity to international air navigation services for the airspace users.
KVERT scientists was available in the office from 8:30 AM till 6:00 PM (KST) 7 days in week and by phone during the evenings since 2005.
KVERT analyses daily satellite imagery (since 2002 till now); information from remote scientific observation stations; real-time seismic data for 11 Kamchatkan volcanoes (data from the Kamchatkan Branch of Geophysical Survey RAS); and other information to monitor activity at Kamchatkan and Northern Kuriles Volcanoes.
KVERT web-page (the Institute of Volcanology and Seismology FED RAS):


For formal scientific citation of this VONA/KVERT Operative Report, please use the following:
VONA/KVERT Operative Report, January 06, 2013. KVERT, Institute of Volcanology and Seismology FEB RAS. URL:
Aviation Color Codes


Volcano is in normal, non-eruptive state

   or, after a change from a higher level: 

Volcanic activity considered to have ceased, and volcano reverted to its normal, non-eruptive state.


Volcano is experiencing signs of elevated unrest above known background levels. 

   or, after a change from higher level: 

Volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.


Volcano is exhibiting heightened unrest with increased likelihood of eruption.


Volcanic eruption is underway with no or minor ash emission.
[specify ash-plume height if possible]


Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely.


Eruption is underway with significant emission of ash into the atmosphere.
[specify ash-plume height if possible]