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Volcanoes Today, 23 May 2025: Semeru volcano, Ibu, Dukono, Marapi, Reventador, Sangay, Ruapehu, Sakurajima

Fri, 23 May 2025, 14:00 1748008805 | BY: VN

Satellite image of Ibu volcano on 23 May 2025

Satellite image of Lewotobi volcano on 22 May 2025

Satellite image of Semeru volcano on 23 May 2025

Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20250523/0933Z OVER FL070 STNR OBS VA DTG:23/0920Z

Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 and is moving at 05 kts in E direction.
The full report is as follows: VA TO FL070 LAST REPORTED AT 23/0751Z EST VA DTG:23/1020Z to 7000 ft (2100 m)

Lewotobi (Flores): (22 May) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash

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Fri, 23 May 2025, 13:54 | BY: MARTIN

Since the last update in February, the temperature at Te Wai ā-moe (Ruapehu Crater Lake) has remained steady around 20 °C but has recently begun a gradual decline to 17 °C.
Heat flux modeling indicates a consistent heat input of approximately 50 megawatts. For comparison, typical heat input values range from about 30 MW during cooler periods to more than 300–400 MW when the lake is significantly warmer (above 35 °C).
Sulfur dioxide (SO₂) emissions, as recorded by continuous gas detectors, remain steady at low levels—around 100 to 150 tonnes per day. These levels are consistent with background activity at Mount Ruapehu, with a modest supply of volcanic gas from depth contributing to the lake’s warmth.
Although the lake has not reached the higher temperatures usually seen during a heating phase, the continued flow of gas through the lake indicates that the vents remain

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Support us – Help us upgrade our services! We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We’re aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal).

Planned features:

Improved multilanguage supportTsunami alertsFaster responsivenessThanks to your past donations, these features have been added recently:Design upgradeDetailed quake statsAdditional seismic data sourcesDownload and Upgrade the Volcanoes & Earthquakes app to get one of

Click this link to continue reading the article on the source website.