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Shiveluch update 19 December 2007

Posted by admin in activity reports, eruptions, Kamchatka, Russia, Shiveluch.
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Further to our earlier post, the Alaska Volcano Observatory has a KVERT information release relating to the current explosive event at Shiveluch (or Sheveluch) volcano, Kamchatka:

Kamchatkan and Northern Kuriles Volcanic Activity
KVERT INFORMATION RELEASE 63-07
Wednesday, December 19, 2007, 19:50 UTC (Thursday, December 20, 07:50 KST)

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 RED
PREVIOUS LEVEL OF CONCERN COLOR CODE IS ORANGE

According to satellite data, new explosive event at Sheveluch volcano occurred ~ at 05:30 UTC on December 19. Ash cloud is moving > 300 km to the south-west from the volcano to the Central Kamchatka for this time. Puff the cloud is at 6-8 km ASL. Possibly the explosive eruption of the volcano will continues.

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.

Strong culmination explosive eruption of the lava dome of Young Sheveluch volcano occurred in 1993, 2001, 2004 and two in 2005.

Level of concern colour code of RED indicates that ‘Major explosive eruption expected within 24 hours. Large ash plume(s) expected to reach at least 25,000 feet above sea level. Strong earthquake activity detected even at distant monitoring stations. Explosive eruption may be in progress’. Nevertheless, the reference to ‘Puff the cloud’ is rather charming. The full text of the information release is here.

The Volcanism Blog