(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)

 (2) Issued:

20190621/2301Z

 (3) Volcano:

Raikoke (CAVW #290250)

 (4) Current aviation colour code:

RED

 (5) Previous aviation colour code:

nill

 (6) Source:

KVERT

 (7) Notice Number:

2019-100

 (8) Volcano Location:

N 48 deg 17 min E 153 deg 15 min

 (9) Area:

Central Kuriles, Russia

(10) Summit Elevation:

1807 ft (551 m)

(11) Volcanic Activity Summary:

The strong explosive eruption of the volcano began about 1805 UTC on 21 June. According to satellite data, explosive eruption continues, ash plume on the height 10-13 km a.s.l. extend for 370  km to the north-east of the volcano. 

The explosive eruption of the volcano continues. Ash explosions up to 32,800-49,200 ft (10-15 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.

(12) Volcanic cloud height:

32,800-42,600 ft (10000-13000 m) AMSL Time and method of ash plume/cloud height determination: 20190621/2300Z – Satellite data, Himawari-8

(13) Other volcanic cloud information:

Distance of ash plume/cloud of the volcano: 229 mi (370 km)

Direction of drift of ash plume/cloud of the volcano: 82 degrees - ENE

(14) Remarks:

(15) Contacts:

Olga A. Girina, IVS FEB RAS

girina@kscnet.ru 

Duty scientist: +79622825253

(16) Next Notice:

A new VONA will be issued if conditions change significantly or the colour code is changed. 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) FEB RAS, is responsible for providing information on volcanic activity to international air navigation services for the airspace users.