Based on information from JMA, the Tokyo VAAC reported that on 17 April an eruption from Sakura-jima produced an ash plume that rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted E. JMA reported that three large eruptions from Showa Crater occurred during 19-22 April and ejected tephra at most 1.3 km from the crater. Crater incandescence was detected at night.

Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)

Based on visual observations and analyses of satellite data, KVERT reported that during 12-19 April a viscous lava flow effused on the NW flank of Shiveluch's lava dome, accompanied by hot avalanches, incandescence, and fumarolic activity. Satellite imagery showed a daily thermal anomaly on the lava dome. Based on analyses of satellite imagery, the Tokyo VAAC reported that on 22 April ash plumes rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted NE. Subsequent images that day showed that the ash had dissipated. The Aviation Color Code remained at Orange.

Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC)

KVERT reported that the S fissure along the W side of Tolbachinsky Dol, a lava plateau on the SW side of Tolbachik, continued to produce very fluid lava flows during 12-19 April that traveled to the W, S, and E sides of the plateau. Cinder cones continued to grow along the S fissure. Gas-and-ash plumes rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted in multiple directions. A large thermal anomaly on the N part of Tolbachinsky Dol was visible daily in satellite imagery. The Aviation Color Code remained at Orange.

Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Volcano in Kamchatka spews ash to 7 km height
Russia & India Report
Shiveluch is one of Kamchatka's largest volcanic structures. It is a stratovolcano composed of alternating layers of solidified ash, hardened lava and volcanic rocks. Shiveluch is the northernmost and one of the most active volcanoes of Kamchatka. It ...

I came across this article today from Wired and just had to pass it along…!

“Lo and behold, what do I find but an entire research field that has been making manmade lava for decades. Sure, we’ve seen some of the recent manmade lava flows done at Syracuse University and small-scale lava in experiments for some time, but here I was finding research that involved a ton (literally) of manmade lava … and moreover, these lava have been made by accident on a number of occasions with tragic consequences.” 

Corium…  Nuclear Meltdown lava.   And, I’d like to point out the lovely margin lobation!

Read the full article at: http://www.wired.com/wiredscience/2013/04/the-most-dangerous-manmade-lava-flow/#more-155251

 

http://www.wired.com/wiredscience/2013/04/the-most-dangerous-manmade-lava-flow/#more-155251

 

Acquired April 5 and 21, 2013, these images compare conditions between Lake Michigan and Saginaw Bay.

Volcano Watch: Study of Kilauea's 1924 explosive eruption resembles a CSI
Hawaii 24/7 (press release)
Volcano Watch: Study of Kilauea's 1924 explosive eruption resembles a CSI. Posted on 10:30 pm, ... Shading shows lava flows younger than 1924 outside Halema`uma`u, and dashed line, the limit of ballistic blocks erupted on March 19, 2008. Crater in 1912 ...
Hawaii's Linked Lava Lakes Looking LivelyLiveScience.com
Lava from Kilauea crater increasesHonolulu Star-Advertiser

all 3 news articles »

Acquired April 5 and 20, 2013, these images compare conditions along parts of the Mississippi and Illinois Rivers, where flooding struck in the spring of 2013.

Hawaii's Linked Lava Lakes Looking Lively
LiveScience.com
A dramatic drop in the lava lake atop Hawaii's Kilauea volcano piqued the interest of volcano watchers yesterday (April 21). The lava lake first started slowly sinking into its cylinder-shaped vent in Halema'uma'u Crater yesterday morning, the Hawaii ...
Hawaiian Volcanic Observatory says Kilauea lava flow is increasingThe Republic
Lava from Kilauea crater increasesHonolulu Star-Advertiser

all 3 news articles »

I think it is time to catch up with some of the rumblings going on in Chile. There aren’t any actively erupting volcanoes right now (well, at least not in all certainty — Chile’s volcanoes can be very remote), but a ...