Volcanic tremor reaches high levels, lava flow and Voragine activity continue at Etna, Italy

The National Institute of Geophysics and Volcanology’s Etna Observatory (INGV-OE) said the vent was feeding a lava field composed of several overlapping flows. The most advanced lava front was estimated at about 2 620 m (8 600 feet) elevation.

Volcanic tremor showed a slow but steady increase and had remained in the high range since July 1. The centroid of the tremor sources remained in the Voragine area at approximately 3 000 m (9 840 feet) elevation.

Strombolian activity from the Voragine pit continued at variable intensity while infrasonic activity was at a medium level in terms of both event frequency and released energy.

Infrasonic sources continued to be located at Northeast Crater, while an additional source associated with Strombolian activity was detected at Voragine from the afternoon of July 1. INGV-OE reported no significant changes in ground-deformation monitoring data.

INGV volcanologist Boris Behncke said activity at Voragine had increased over the preceding days, while lava continued to flow east from the vent at about 3 000 m (9 840 feet) elevation. A video and photograph taken from Nicolosi on the evening of July 2 showed activity at the summit crater, although the lava flow was not visible from that location.

Activity at #Etna's Voragine crater has increased over the past few days, while lava continues to flow from a vent at 3000 m elevation toward east. Video and photo taken on the evening of 2 July 2026 from Nicolosi, from where the lava flow is not visible pic.twitter.com/9IcLGnivhc

— Boris Behncke (@etnaboris) July 2, 2026

The current effusive phase began on June 26, when lava emerged from the lower end of a fracture system on Voragine’s eastern flank at about 3 030 m (9 940 feet) elevation. The flow entered Valle del Leone, in the upper Valle del Bove.

By June 27, the lava flow was about 630 m (2 070 feet) long and covered approximately 18 000 m² (4.4 acres). INGV-OE estimated its volume at about 45 000 m³ (1.6 million ft³), with an uncertainty of about 40%.

The most advanced lava front had reached approximately 2 700–2 750 m (8 860–9 020 feet) elevation by June 29. Strombolian activity from the Voragine pit was then discontinuous and variable in intensity.

In its weekly report issued on June 30, INGV-OE reported sporadic ash emissions from the pit on Voragine’s upper eastern flank from June 10 and weak, irregular Strombolian activity from June 26. The volcanic tremor has increased gradually since June 3, while generally remaining at medium levels through June 28.

References:

¹ ETNA BOLLETTINO SETTIMANALE SETTIMANA DI RIFERIMENTO 22/06/2026 – 28/06/2026 – INGV-OE – June 30, 2026

² COMUNICATO ETNA – INGV-OE – July 3, 2026