New and Continuing Volcanic Activity

There are many ongoing and some beginning or increasing recorded volcanic activity around the globe. These are updates for the last week:


Continuing eruptions at Etna Volcano in Italy

Summary

The 21st paroxysmal eruption of Etna's New SE crater started early on 4 March, following a week of intermittent strombolian activity and accompanied by a steep rise of volcanic tremor. Lava fountains several 100 m tall were rising from the summit crater during the peak phase of the eruption, generating a 2-3 km tall tephra and steam plume, which rose almost vertically due to the absence of strong winds, and drifted SE. 
A lava flow was erupted from the SE trending fissure and went towards and partly into the Valle del Bove.
Episodes of violent, explosive lava-snow interaction were observed producing large billowing steam plumes and probably generating small pyroclastic flows, similar to such events during previous paroxysms.

Tungurahua Volcano: explosions, ash fall and possible pyroclastic flow

Ecuador's Instituto Geofísico (IG) reports an increase of Tunguarahua volcano's activity: Since last night (3 March), 4 explosions have been reported of moderate to large size. An explosion at 07:31 local time today produced an ash columnreaching about 4 km in height and drifting to the west - northwest. 
A second explosion took place at 09:11 (local time) and produced a strong shock wave that rattled the ground and windows in nearby areas. CLoud cover has prevented detailed observations, but with the help of thermal sensors, hot fresh deposits were detected on the flanks, suggesting they were the result of a pyroclastic flow. 
In the morning, the observatory post at Cusúa reported the presence of hot deposits on the upper flank typical for fresh pyroclastic flow deposits. 
Ash fall was reported from Choglontús, Manzano and Motilones areas before, and this morning ashfall reached the Yuibug area. 
The monitoring system has been recording variable seismicity and powerful tremor episodes lasting minutes to hours (which probably indicate rising magma), interrupted by short moderate to large explosion signals corresponding to the ash eruptions from the growing lava dome.

Moderate ash explosions reported at Guatemala’s Santa Maria volcano

 Santa Maria/Santiaguito volcano in Guatemala has been displaying a slightly elevated state of activity in recent days. INSIVUMEH reports moderate explosions about every 15 minutes that eject plumes of gray ash tot 600 and 800 meters above the crater, and producing an ash plume drifting to the west and SW until dissipating at about 15 km distance. Light ash falls from these eruptions frequently occur in the villages San Marcos, Buena Vista and Palajunoj and the El Faro, Florida, and Monte Claro Fincas. Crater glow at the summit of the lava dome is well visible at night, and a blocky lava flow with constant avalanches of blocks rolling down to tits base continues to be active, raising secondary ash plumes.

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