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Piton de la Fournaise volcano (Reunion Island, France) - Smithsonian / USGS Weekly Volcanic Activity Report for 20 May-26 May 2015 (New Activity / Unrest)

Wed, 20 May 2015, 06:00
06:00 AM | BY: VN
OVPDLF reported that the eruption at Piton de la Fournaise that began on 17 May continued through 26 May. After a peak on 17 May, sulfur dioxide emissions fluctuated but had gradually decreased overall. Lava-flow rates estimated by satellite data had also fluctuated but showed an overall decrease from 24.2 cubic meters per second on 17 May to 2.5 cubic meters per second on 21 May.
During 21-22 May observers reported large variations in activity, including increasing heights of the lava fountain (over 50 m high), collapsing parts of the newly formed cinder cone, and a new very fluid lava flow adjacent to the main flow. During an overflight on 23 May scientists observed a large blue sulfur dioxide plume above the vent, lower lava fountains, a smaller vent in the cone, and the presence of a lava tube about 200 m downstream of the vent. During 24-25 May activity remained unchanged; low lava fountains and low-level lava flows persisted.

Source: Observatoire Volcanologique du Piton de la Fournaise (OVPF)
From: Global Volcanism Program, 2015. Report on Piton de la Fournaise. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 20 May-26 May 2015. Smithsonian Institution and US Geological Survey.

Previous news

Wed, 20 May 2015, 01:06
Approximate location of the lava flow yesterday evening (
The eruption continues with strong lava effusion. As of 19 May evening, the lava flow had been at 3 km from the coastal road, having advanced 750 m during the past 24 hours. ... Read all
Mon, 18 May 2015, 12:51
The two active vents with lava flows yesterday (photo: Planétaire974)
The new eruption continues, although only the lowest vent seems to be still active by now. It continues to feed a large lava flow now headed towards the vast coastal flat to the east. In the course of today, it reached the steeper section of the Enclos, the "Grandes Pentes" and started to descend there. ... Read all
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