Volcanic activity worldwide 27 May 2021: Etna volcano, Kilauea, Nyiragongo, Nevados de Chillán, Great Sitkin
Thu, 27 May 2021, 21:0021:00 PM | BY: SEVERAL CONTRIBUTORS
Map of today's active volcanoes
Current tremor signal showing the peaks of the recent and likely to be soon paroxysms (image: INGV Catania)
During an eruption monitoring shift on May 25, HVO field crews did not observe any active surface lava or incandescent areas within Halema‘uma‘u crater, at the summit of Kīlauea. (USGS photo by K. Mulliken.)
Explosive eruption from Great Sitkin volcano yesterday (image: AVO)
Etna (Sicily, Italy): Another intense eruptive phase likely with lava fountains occurred this afternoon, but due to cloud cover, it was not possible to observe it very well visually.
Recent earthquakes near Nyiragongo volcano (image: Rwanda Seismic Monitor)
Tremor started to rise in the morning, followed by increasing explosions and ash emissions from the New SE crater. It reached high peak values between around 14:40 and 15:15 local time, when the activity likely consisted in sustained lava fountains. Activity dropped sharply afterwards only to pick up again after about 2 hours and is currently again rising, possibly giving way to yet another lava fountain phase in the next hours or so.
Kilauea (Hawai'i): (26 May) Excerpt from the USGS Hawaiian Volcano Observatory's May 26, 2021 Daily Update:
Activity Summary: Kīlauea Volcano is no longer erupting. Observations indicate that the eruption in Halema'uma'u at the summit of Kīlauea Volcano has paused. This morning, May 26, the lava lake is 229 m (751 ft) deep and is stagnant across its surface. Within the past 48 hours, no active lava was observed in webcam images of the Halema'uma'u crater lava lake surface. Field crews on May 25 did not observe any signs of lava lake activity, and reported no signs of recently active surface lava. Sulfur dioxide emission rates remain slightly elevated.
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Great Sitkin (United States, Aleutian Islands): After the latest explosive eruption at the volcano yesterday, a seismic activity has decreased gradually although volcanic unrest continues as reported local observatory Alaska Volcano Observatory (AVO).
Surface temperatures continue at elevated levels identified in satellite data.
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Nevados de Chillán (Central Chile): (26 May) Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT
Nyiragongo (DRCongo): Authorities are highly concerned about the risk of a second - potentially more destructive if not catastrophic - eruption from the volcano in the near future and have ordered the partial evacuation of Goma, where a mass exodus seems to have started, making the overall situation even more chaotic and difficult.
The reason scientists worry are both a lack in precise monitoring data, the potential of large impact of an eruption, and the continuing earthquakes that rattle the area around Goma and Gyseni, as well as ground cracks in and around Goma, which might indicate that magma is accumulating beneath the area and could well lead to a new eruption.
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Wed, 26 May 2021, 21:00
Volcanic activity worldwide 26 May 2021: Etna volcano, Stromboli, Fuego, Merapi, Dukono, Reventador,...