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<!–div style="font-size:14px;text-align:center;border:3px solid blue;border-radius:5px;padding:3px;margin:5px;background:#eee"><a href="https://www.volcanoesandearthquakes.com/app/volcano-report.php?volcanoId=44" style="text-decoration:none" target="_blank" rel="noopener noreferrer nofollow" title="Share a volcano (activity) report, submit a photo or other interesting news!” onclick=”window.open(this.href,’Volcano Report’,’status=0,toolbar=0,location=0,directories=0,menubar=0,resizable=1,scrollbars=1,height=500,width=450′);return false”>Send Volcano Report</div–> Stratovolcano 3676 m (12,060 ft)
East Java, Indonesia, -8.11°S / 112.92°E
Current status: erupting (4 out of 5) Semeru volcano eruptions:
1818, 1829, 1830, 1832, 1836, 1838, 1842, 1844, 1845, 1848, 1849(?), 1851, 1856, 1857, 1865, 1866(?), 1887, 1887, 1888, 1889-91, 1892, 1893, 1893-94, 1895, 1896, 1897, 1899, 1899, 1900, 1901, 1903, 1904, 1905, 1907, 1908, 1909-10, 1910-11, 1911, 1912, 1913, 1941-42, 1945, 1946, 1946-47, 1950-64, 1967-ongoing
Typical eruption style
Explosive. Near constant strombolian activity, occasionally stronger explosions, lava flows and pyroclastic flows.

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Thursday, Dec 4, 2025 21:00 | 1 hour ago | By: several contributors

Map of today’s active volcanoes

Kusatsu-Shirane (Honshu): The Japan Meteorological Agency (JMA) reported that unrest continued at Kusatsu-Shiranesan between 1 December 2025 (local) and 3 December 2025 (local). The alert level remained at “Level 2 – Restriction on proximity to the crater” (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more]

Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.
…4 Dec:
The Japan Meteorological Agency (JMA) reported that the eruption continued at Aira on 3 December 2025 (local). Ash plume(s) rose to a maximum of 1,100 m (3,609 ft) above the vent. The alert level remained at “Level 3 – Restriction on proximity to the volcano” (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
… [read more]

Canlaon (Central Philippines): The

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