Volcanic activity worldwide 12 May 2022: Stromboli volcano, Fuego, Karymsky, Krakatau, Merapi, Semer…


Thu, 12 May 2022, 21:00

21:00 PM | BY: SEVERAL CONTRIBUTORS

Map of today’s active volcanoes

The block-and-ash flow from Merapi volcano yesterday (image: PVMBG)

The block-and-ash flow from Merapi volcano yesterday (image: PVMBG)

Emitting ash from the North Cone dispersing W-SW captured by Landsat 8 satellite (image: USGS Landsat Program)

Emitting ash from the North Cone dispersing W-SW captured by Landsat 8 satellite (image: USGS Landsat Program)

Stromboli (Eolian Islands, Italy): INGV reported that during 2-8 May activity at Stromboli was characterized by ongoing explosions from three vents in Area N (North Crater area) and two vents in Area C-S (South-Central Crater area). Explosions from Area N vents (N1 and N2) averaged 3-6 events per hour; explosions from the N1 vent ejected lapilli and bombs mixed with ash 80-150 m high and those at two N2 vents ejected material less than 80 m high. N2 produced weak and occasional spattering.
No explosions occurred at the S1 and C vents in Area C-S; low-intensity explosions at the two S2 vents occurred at a rate of 1-5 per hour and ejected coarse material no higher than 80 m.
… [read more]

Karymsky (Kamchatka): KVERT reported that a thermal anomaly over Karymsky was visible in satellite images during 29 April-6 May. Explosions on 4 May generated ash plumes that rose as high as 3.2 km (10,500 ft) a.s.l. and drifted about 60 km SW.

The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.
… [read more]

Shiveluch (Kamchatka): KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 29 April-6 May, and lava-dome extrusion continued. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
… [read more]

Sakurajima (Kyushu, Japan): JMA reported that sulfur dioxide emissions at Minamidake Crater (at Aira Caldera’s Sakurajima volcano) were slightly high at 500 tons per day on 2 May. At 1453 on 3 May an eruption produced a plume that rose 1.1 km above the crater rim. Very small eruptive events were recorded during 6-9 May.
The Alert Level remained at 3 (on a 5-level scale), and residents were warned to stay 2 km away from the crater.
… [read more]

Suwanose-jima (Ryukyu Islands): JMA reported that eruptive activity continued to be recorded at Suwanosejima’s Ontake Crater during 2-9 May. Eruption plumes rose as high as 1.3 km above the crater rim; no explosions were recorded. Crater incandescence was occasionally visible during 2-6 May and ash fell in Toshima village (3.5 km SSW).
The Alert Level remained at 3 and the public was warned to stay 2 km away from the crater.
… [read more]

Manam (Papua New Guinea): The Darwin VAAC reported that during 3-4 May ash plumes from Manam rose to 2.1 km (7,000 ft) a.s.l. and drifted SE and NW based on information from RVO, satellite images, and weather models. On 6 May ash plumes rose to 1.8 km (6,000 ft) a.s.l. and drifted NW and WNW.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
… [read more]

Lewotolo (Lesser Sunda Islands): PVMBG reported that the eruption at Lewotolok continued during 4-10 May. Eruptive events at 1245 on 4 May and 0544 on 6 May produced ash plumes that rose 600 m above the summit and drifted W. The Alert Level remained at 3 (on a scale of 1-4) and the public was warned to stay 3 km away from the summit crater and 4 km away from the crater on the SE flank.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
… [read more]

Krakatau (Sunda Strait, Indonesia): (12 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .
The full report is as follows: VA TO FL080 OBS AT 11/0900Z MOV E OBS VA DTG:12/0440Z to 8000 ft (2400 m)

Merapi (Central Java, Indonesia): BPPTKG reported no significant morphological changes at Merapi’s summit lava dome during 29 April-5 May, though the height of the dome below the SW rim had decreased by around 3 m. Based on photo analyses, the volume of the SW lava dome had a volume of 1.52 million cubic meters while the central lava dome was 2.58 million cubic meters. As many as 120 lava avalanches traveled a maximum of 2 km, mostly down the Bebeng drainage on the SW flank.
Seismicity remained high. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 3-7 km away from the summit based on location.
… [read more]
…12 May:
The extrusive activity of the volcano continues.
A visible glow and gas, steam and a small amount of ash emissions from satellite image on 3 May show fresh viscous magma rising into the lava dome within the summit crater.
… [read more]

Semeru (East Java, Indonesia): PVMBG reported that the eruption at Semeru continued during 3-10 May. Ash plumes visible on 5, 7, and 9 May were rising 400-700 m above the summit and drifting mainly SW. The Alert Level remained at 3 (on a scale of 1-4).
The public was warned to stay at least 500 m away from Kobokan drainages within 17 km of the summit, along with other drainages originating on Semeru, including the Bang, Kembar, and Sat, due to lahar, avalanche, and pyroclastic flow hazards.
… [read more]

Dukono (Halmahera): Based on satellite and wind model data, the Darwin VAAC reported that during 4-9 May ash plumes from Dukono rose to 2.1-2.4 km (7,000-8,000 ft) a.s.l. and drifted in multiple directions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.
Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
… [read more]

Ruapehu (North Island): On 11 May GeoNet reported that elevated unrest at Ruapehu continued during the previous week, consisting of lake water heating, volcanic gas output, and strong volcanic tremor. The lake water temperature continued to rise, peaking at 41 degrees Celsius. Steam plumes were visible rising from the lake; an overflight confirmed that they were caused by a combination of the warming lake and atmospheric conditions, with no eruptive activity.
Tremor levels declined but remained high. A gas measurement flight on 4 May confirmed high levels of gas emissions with sulfur dioxide and carbon dioxide flux rates at 260 and 1,970 tonnes per day, respectively. Lake upwelling over the central and northern vents areas was also visible during multiple overflights.
… [read more]

White Island (New Zealand): On 9 May GeoNet reported that activity at Whakaari/White Island remained at a low level based on observations and data collected during an overflight conducted on 27 April. Gas-and-steam emission temperatures were up to 111 degrees Celsius, down from 16 March highs of 288 degrees Celsius. Geysering activity at one of the water-saturated vents was observed.
Satellite data indicated minor uplift in the active vent area. Seismicity was low. The Volcanic Alert Level remained at 1 and the Aviation Color Code remained at Green.
… [read more]

Kilauea (Hawai’i): HVO reported that lava continued to effuse from a vent in the lower W wall of Kilauea’s Halema`uma`u Crater during 3-10 May, entering the active lava lake and flowing onto the crater floor. The surface of the lava lake was active all week, though the height of the lake was relatively stable. Daily breakouts occurred along the NE, NW, and S margins of the lake.
A short-lived lava flow effused from the W vent and onto the crater floor at around 0700 on 7 May. The Aviation Color Code and the Volcano Alert Level remained at Orange and Watch, respectively.
… [read more]

Kavachi (Solomon Islands): Satellite data showed discolored water around Kavachi on 10, 20, 25, and 30 April as well as on 5 May.
Sources: Sentinel Hub, Culture Volcan
… [read more]

Wolf (Galápagos Islands, Ecuador): On 5 May IG reported that the eruption at Wolf’s SE flank was over. The eruption began at 2320 on 6 January from an approximately 8-km-long radial fissure, trending NW-SE, that had at least five active vents. Lava flows from the vents traveled SE then E, covering an area of more than 30 square kilometers.
The maximum length of the flow field was 18.5 km, with the farthest-reaching flow stopping 150-200 m from the coastline. The highest levels of heat, sulfur dioxide emissions, seismicity, and deformation were recorded in the early days of the eruption. Sulfur dioxide emissions had been absent for the previous 30 days.
… [read more]

Pavlof (Alaska Peninsula, USA): AVO reported that the eruption at a vent on Pavlof’s upper E flank was ongoing during 3-10 May, though weather conditions sometimes prevented visual observations. Seismic tremor persisted. Daily elevated surface temperatures were identified in satellite images and almost daily steam emissions were recorded in webcam images.
The lava flow from the E vent was 500 m long by 8 May. The Volcano Alert Level remained at Watch and the Aviation Color Code remained at Orange.
… [read more]

Semisopochnoi (United States, Aleutian Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 5000 ft (1500 m) altitude or flight level 050 and is moving at 20 kts in NW direction.
The full report is as follows: CONTINUOUS LOW-LVL ERUPTION. to 5000 ft (1500 m)
…12 May:
AVO reported that low-level eruptive activity at Semisopochnoi’s North Cerberus cone continued during 3-10 May. Seismicity continued to be elevated with intermittent tremor detected by the seismic network. Several daily explosions were recorded during 8-10 May.
Weather clouds obscured views of the volcano, though daily minor, low-level ash emissions were seen in webcam views. A pilot reported a low-level eruption cloud on 9 May. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
… [read more]
…12 May:
The activity of the volcano is dominated by dense ash emissions from the North Cone of Mount Cerberus during the past two days.
Another phase of sustained ash emissions continued most of this morning, starting at about 06:44 local time, reaching altitude of 6,000 ft (1,800 m).
… [read more]

Great Sitkin (United States, Aleutian Islands): AVO reported that slow lava effusion at Great Sitkin likely continued during 3-10 May; a 5 May satellite image showed that the S flank flow had advanced 15 m. Elevated surface temperatures were identified in satellite data during 6-10 May. The Aviation Color Code and the Volcano Alert Level remained at Orange and Watch, respectively.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
… [read more]

Cleveland (Aleutian Islands, Alaska): On 10 May AVO raised the Aviation Color Code and the Volcano Alert Level for Cleveland to Yellow and Advisory, respectively, noting that elevated surface temperatures and sulfur dioxide emissions were identified in satellite data during the past few days.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
… [read more]

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: VA OBS FM STLT to 15000 ft (4600 m)

Rincón de la Vieja (Costa Rica): On 5 May OVSICORI-UNA reported an average of two daily phreatic explosions at Rincón de la Vieja during the previous week. The events did not eject material outside of the crater and produced steam plumes that rose no higher than 200 m above the crater rim. A phreatic explosion at 1650 on 6 May produced a steam plume that rose 500 m.
A few phreatic explosions and several steam emissions were recorded on 7 May. Several steam emissions were also recorded on 8 May.
… [read more]

Nevado del Ruiz (Colombia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows: OCNL EM to 22000 ft (6700 m)
…12 May:
On 10 May Servicio Geológico Colombiano’s (SGC) reported that during the previous week the number of seismic signals indicating both rock fracturing and fluid movement at Nevado del Ruiz had increased compared to the week before. Several episodes of drumbeat seismicity were recorded on 5 and 8 May, indicting growth of the lava dome. Some low-temperature thermal anomalies were also identified at Arenas Crater.
Gas-and-ash emissions were periodically visible in webcam images. A small ash emission on 3 May caused minor ashfall in the municipalities of Manizales (25 km N), Dosquebradas (40 km W), Santa Rosa, and Pereira (40 km WSW). At 0857 on 9 May an ash plume drifted NW, W, and SW, causing ashfall in Manizales, Villamaría (28 km NW), and Chinchiná (30 km WNW) in the department of Caldas, and in Pereira, Dosquebradas, and Santa Rosa de Cabal (33 km W) in the department of Risaralda.
… [read more]

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: VA EMS OBS FM STLT to 20000 ft (6100 m)

Reventador (Ecuador): (12 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: OCNL EM to 14000 ft (4300 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 and is moving at 10 kts in E direction.
The full report is as follows: SPORADIC EMISSIONS to 24000 ft (7300 m)
…12 May:
Instituto Geofísico del Perú (IGP) reported moderate levels of activity at Sabancaya during 2-8 May with a daily average of 53 explosions. Gas-and-ash plumes rose as high as 3 km above the summit and drifted N, NE, E, and SE. As many as five thermal anomalies originating from the lava dome in the summit crater were identified in satellite data.
Minor inflation continued to be detected near Hualca Hualca (4 km N). The Alert Level remained at Orange (the second highest level on a four-color scale) and the public were warned to stay outside of a 12-km radius.
… [read more]

Previous news

Map of today's active volcanoes
Krakatau (Sunda Strait, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 . … Read all
Map of today's active volcanoes
Krakatau (Sunda Strait, Indonesia): (10 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 05 kts in SW direction. … Read all



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