EXERCISE EXERCISE EXERCISE

 (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
 (2) Issued:20150415/2200Z
 (3) Volcano:Ksudach (CAVW #300050)
 (4) Current Aviation Color Code:RED
 (5) Previous Aviation Color Code:green
 (6) Source:KVERT
 (7) Notice Number:2015-160
 (8) Volcano Location:N 51 deg 50 min E 157 deg 34 min
 (9) Area:Kamchatka, Russia
(10) Summit Elevation:3539.12 ft (1079 m)
(11) Volcanic Activity Summary:Very strong explosive eruption of Ksudach volcano began at 21:45 UTC on April 15, 2015. According to satellite data, ash is reaching 51,000 ft (15.5 km) a.s.l. and is drifting south-east of the volcano at this time. Ash emission is continuing.

Ongoing activity could affect international and low-flying aircraft.
(12) Volcanic cloud height:50840 ft (15500 m) a.s.l. Time and method of ash plume/cloud height determination: 20150415/2145Z – MTSAT
(13) Other volcanic cloud information:Distance of ash plume/cloud of the volcano: 12 mi (20 km)
Direction of drift of ash plume/cloud of the volcano: SE
Time and method of ash plume/cloud determination: 20150415/2155Z – MTSAT
(14) Remarks:This strong explosive eruption is extremely hazardous for aircraft downwind. There was one known catastrophic eruption of Ksudach volcano which occurred on 28-29 March 1907. Ksudach volcano is not monitored with a seismic station. KVERT only uses satellite data to monitor Ksudach volcano.
(15) Contacts:Dr. Olga A. Girina, Head of KVERT, IVS FEB RAS
girina@kscnet.ru +74152302549

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.
EXERCISE EXERCISE EXERCISE


CITATION GUIDELINES

For formal scientific citation of this KVERT Volcanic Activity Notice, please use the following:
KVERT Volcanic Activity Notice, апреля 15, 2015. KVERT, Institute of Volcanology and Seismology FEB RAS. URL: http://kvert.febras.net/van/?n=2015-160.
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.