Hierro Volcano, Canary Islands - John Seach

Earthquakes continue at Hierro volcano in the Canary Islands. Since July 2011 over 8000 small earthquakes have been recorded at the volcano. Yesterday an earthquake of magnitude 3.5 occurred. Deformation has increased significantly at the volcano in the past week. On 23rd September 2011 the alert level was raised to YELLOW. Some residents have been evacuated from near the volcano. Earthquakes are occurring in the northwest of the island at the location of a landslide that created a 100 metre high tsunami about 50,000 years ago. A major debris avalanche occurred on the northern flank of Hierro Island, dated about 13,000 years ago. It had a width of 15 km and a scarp height of 1000 m. The landslide deposited 150-180 cubic km of debris on the seafloor down to a depth of 3000 m.
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Tambora Volcano, Indonesia - John Seach

Tambora volcano in Indonesia has been raised to level 2 alert (out of maximum 4) after an increase in volcanic earthquakes. In April 2011 there were 37 shallow volcanic earthquakes recorded, 167 in May, 277 in June, 363 in July, and 141 from 1-29 August. Continuous tremor was recorded on 29 and 30 August. Tourists and locals are advised to avoid the summit area of Tambora volcano. In 1815 Tambora had one of the largest eruptions on earth in the past 1000 years and ejected 100-150 cubic km of lava.
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Ranakah Volcano, Indonesia - John Seach

Volcanic unrest has been reported at Ranakah volcano in Indonesia. Between January and 24th August 2011 there was a background level of 1-2 shallow volcanic earthquakes per day at the volcano. On 24th August 2011 there were 10 shallow volcanic earthquakes recorded and 6 on 25th August. There is a risk that volcanic earthquakes could distrupt the lava dome causing pyroclastic flows similar to 1988. On 26th August 2011 the alert status was raised to level 2 (out of a maximum 4). People are advised to avoid the summit area.
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Papandayan Volcano, Indonesia - John Seach

Papandayan volcano in Indonesia has been placed on level 3 alert (out of maximum 4) after an increase in unrest. Seismic activity has increased at the volcano with a doubling of volcanic earthquakes in the first 2 weeks of August compared to previous months. Deformation measurements have detected an 18 mm inflation of the volcano on 10th August compared to 4th July 2011. Temperature in one of the four craters has increased from 106.4 to 107.5 deg C between 7-12 August. A two km exclusion zone has been placed around the crater.
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Kilauea Volcano, Hawaii - John Seach

Large changes have occurred on the east rift zone of Kilauea volcano. On 3rd August the floor of Pu'u O'o crater collapsed and draining the lava lake. A lava volume of lava emerged from twelve vents on the west side of Pu'u O'o cone which flowed northwest and south. The walls of Pu'u O'o crater have started to collapse. A small amount of lava has returned to the crater floor and was visible on the webcam. At present the lava flows remain within Hawaii Volcanoes National Park and have not approaced inhabited areas.
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Katla Volcano, Iceland - John Seach

An eruption has possibly started at Katla volcano, Iceland. A glacial flood, possibly from an eruption of Katla volcano under the Mýrdalsjökull icecap has damaged Highway number 1 by the river Múlakvísl. The bridge across Múlakvísl has been damaged and the road is closed between Höfdabrekka, east of Vík, and Skálm River, near Álftaver. So far the eruption is not large, but people have been advised to avoid the area. The Álftaver area is being evacuated and preparations are being made for evacuation of the camping area in Thakgil. There has been speculation about an eruption in Hekla, another volcano in south Iceland over the past few days.
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Hekla Volcano, Iceland - John Seach

Hekla volcano in Iceland is showning signs of unrest. Signs of possible magma movement under the volcano has been detected for the past few days. Since 1970, Hekla volcano has erupted about every 10 years. The initial phase of each Hekla eruption is always highly explosive. The duration and magnitude of the explosive phase is directly correlated with the length of the preceding repose period. Hekla is the most active volcano in Iceland, and one of the world's best known volcanoes.
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