Early in the morning of 27 October, a new flank eruption began at Mount Etna (3315 m) after only a few hours of seismic activity.
21 October 2020
29 October 2002
This eruption was more violent and more devastating than the previous flank eruption in July–August 2001 and once more occurred from fissures on two sides of the volcano: at about 2750 m on the southern flank, and at elevations between 1850 and 2500 m on the northeastern flank, in an area known as the Northeast Rift.
After its extremely vigorous start, the eruption generally declined until 5 November, and then continued in a more or less stable manner on the upper southern flank.
The tourist complex and skiing areas of Piano Provenzana were all but devastated by the lava flows that issued from the NE Rift vents on the first day of the eruption.
Heavy tephra falls caused by the activity on the southern flank occurred mostly in areas to the south of the volcano and nearly paralysed public life in Catania and nearby towns.
For more than two weeks the International Airport of Catania, Fontanarossa, had to be closed due to ash on the runways. Strong seismic activity and ground deformation accompanied the eruption; a particularly strong shock (magnitude 4.4 on the Richter scale) on 29 October destroyed and damaged numerous buildings on the lower southeastern flank, in the area of Santa Venerina.
Figure 1: Mount Etna on 27 October
See also: Mount Etna eruption in July 2001
Figure 2: Meteosat-6 (visible channel)
30 October, 12:10 UTC
In the Meteosat-6 visible image the ash plume is clearly visible as a bright band caused by the high reflectivity of ash particles when compared with the dark water surface.
The wind direction on this day was from the north-west.
The ash plume is also visible in the infrared images, as shown in the image below.
Figure 3: Meteosat-6 (infrared channel)
30 October, 12:10 UTC
Animation from 30 October, 12.10–15.00 UTC (rapid scans)
Figure 4: Meteosat-6 (infrared channel)
27 October, 12:00 UTC
This animation from 27 October (00:00–12:00 UTC, 1.) shows the start of the eruption when the prevailing winds at the height of 3000 m were from the north.
According to the satellite animation, the eruption started around 02:00 UTC.
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