The Icelandic Meteorological Office announced Saturday May 21 at 2:00 pm CDT the eruption of the volcano Grímsvötn in Iceland (N64,24, W0172) following a short period of tremor. This is Iceland’s largest volcano. The eruption started under ice but spewed a plume up to 65,000 feet. Grímsvötn is a well monitored volcano. It last erupted in October 2004 and lasted about a week.
This eruption was larger than last year’s Eyjafjallajokull eruption, but will likely have less impact on air traffic. While Keflavik, the Iceland’s larges airport, was shut down, the ash plume from Grímsvötn is currently drifting east and north away from Europe.
Volcanic Ash Advisory Centers are set up across the globe to monitor volcanic ash and issue warnings as appropriate. These centers make use of satellite observations to monitor the eruptions and the movement of the ash cloud. Below is a link to a satellite animation of the eruption. This is a European satellite and the time between images is about 15 minutes.
http://cimss.ssec.wisc.edu/goes/blog/wp-content/uploads/2011/05/110521_m...
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