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 (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
 (2) Issued:20160411/0321Z
 (3) Volcano:Karpinsky (CAVW #290350)
 (4) Current Aviation Color Code:RED
 (5) Previous Aviation Color Code:green
 (6) Source:KVERT
 (7) Notice Number:2016-42
 (8) Volcano Location:N 50 deg 8 min E 155 deg 22 min
 (9) Area:Northern Kuriles, Russia
(10) Summit Elevation:4349.28 ft (1326 m)
(11) Volcanic Activity Summary:EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE

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(12) Volcanic cloud height:First ash plume
39360 ft (12000 m) AMSL Time and method of ash plume/cloud height determination: 20160410/2145Z – NOAA 18 (4m5)

Second ash plume
19680 ft (6000 m) a.s.l. Time and method of ash plume/cloud height determination: 20160410/2145Z – NOAA 18 (4m5)
(13) Other volcanic cloud information:First ash plume
Distance of ash plume/cloud of the volcano: 17 mi (27 km)
Direction of drift of ash plume/cloud of the volcano: ESE / azimuth 120 deg
Time and method of ash plume/cloud determination: 20160410/2145Z – NOAA 18 (4m5)

Second ash plume
Distance of ash plume/cloud of the volcano: 62 mi (100 km)
Direction of drift of ash plume/cloud of the volcano: NNE / azimuth 30 deg
Time and method of ash plume/cloud determination: 20160410/2145Z – NOAA 18 (4m5)
(14) Remarks:EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE EXERCISE
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(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS
girina@kscnet.ru +74152202044

Duty scientist: +79622825253
(16) Next Notice:A new VONA will be issued if conditions change significantly or the Aviation Color Code is changes. VONAs are posted at http://www.kscnet.ru/ivs/kvert/index_eng.php.

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.
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CITATION GUIDELINES

For formal scientific citation of this KVERT Volcanic Activity Notice, please use the following:
KVERT Volcanic Activity Notice, April 11, 2016. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?n=2016-42.
Aviation Colour Codes

GREEN

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.

YELLOW

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.

ORANGE

Volcano is exhibiting heightened unrest with increased likelihood of eruption.
   or,
Volcanic eruption is underway with no or minor ash emission.
[specify ash-plume height if possible]

RED

Eruption is forecast to be imminent with significant emission of ash into the atmosphere likely.
  or,
Eruption is underway with significant emission of ash into the atmosphere.
[specify ash-plume height if possible]

UNASSIGNED

There is insufficient information available to assess the current status of the volcano or volcanic activity.