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Explosive activity at Mount Etna's summit craters has started to ease, while a weak release of volcanic ash remains confined to high altitude and is not forming an eruptive cloud, according to a new aviation notice issued by Italy's National Institute of Geophysics and Volcanology, or INGV.
The INGV Etna Observatory in Catania lowered its aviation warning from red to orange in its latest Volcano Observatory Notice for Aviation, known as VONA, which provides information on volcanic activity that could affect air traffic.
Although weak volcanic ash emissions are continuing, the material remains at high altitude and no eruptive cloud is currently being produced.
Volcanic tremor, which reflects the energy linked to magma moving up through the volcano's conduits, remains at medium levels, according to the observatory.
The current eruptive phase is not affecting operations at Catania's Vincenzo Bellini International Airport.
The lowering of the VONA alert from red to orange comes as explosive activity around Etna's summit craters continues to die down.
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