The Weekly Volcanic Activity Report: September 24-30, 2025
New activity/unrest was reported for two volcanoes from September 24–30, 2025. During the same period, ongoing activity was reported for 22 volcanoes.
Scientists solve the mystery behind Moon’s monthslong disappearance in the year 1100
In the year 1100, the Moon vanished from the night sky, leaving people in full darkness for several consecutive months. 920 years later, researchers at the University of Geneva in Switzerland believe they may have finally solved the mystery as their findings showed…
2018 Volcanoes in Review
Thanks to Jake and Mari of the Grand Solar Minimum YouTube channel we have an excellent overview of all significant volcanic eruptions of the year. Out of an estimated 1 500 active volcanoes, on average 50 – 70 erupt every year, spewing steam, ash, toxic gases, and…
Most violent eruption of Fuego volcano in 40 years, massive pyroclastic flows leave hundreds dead
A major eruption started at Guatemalan Fuego volcano around 16:00 UTC (10:00 local time) on June 3, 2018. The eruption ejected volcanic ash up to 10 km (32 800 feet) above sea level and produced massive lava and pyroclastic flows in its most violent eruption in more…
Significant eruption at Ambae volcano, more sulfur released than in any eruption over the past 3 years
Ambae volcano remains at the Alert Level 3 with sustained volcanic ashes/gases and villages from east to southeast of Ambae island can continue expecting ash fall and gases. Acid rain may occur during rainfall, Vanuatu Meteorology and Geohazards Department (VMGD)…
Major eruption at Mount Sinabung, ash to 15 km a.s.l., Indonesia
A major eruption took place at Mount Sinabung, Indonesia around 09:00 UTC on April 6, 2018 shooting ash up to 15 km (50 000 feet) above sea level. The Aviation Color Code was raised to Red. This is the second major eruption of this volcano within 2 months. The…
Massive eruption at Sinabung volcano, ash to 16.7 km (55 000 feet) a.s.l.
A high impact volcanic ash eruption started at Sinabung volcano, Indonesia at 01:53 UTC on Monday, February 19, 2018. Pyroclastic flows traveled 3.5 km (2.1 miles) and 4.9 km (3 miles) from the summit. Ash plume was reaching an altitude of 16.7 km (55 000 feet)…
The Weekly Volcanic Activity Report: January 31 – February 6, 2018
New activity/unrest was reported for 5 volcanoes between January 31 and February 6, 2018. During the same period, ongoing activity was reported for 10 volcanoes. New activity/unrest: Fuego, Guatemala | Kadovar, Papua New Guinea | Karangetang, Siau Island (Indonesia)…
Eruption of Fuego volcano forces school closures, Orange Alert issued
Guatemalan authorities issued an Orange Alert for Fuego volcano after its first eruption of the year on February 1, 2018. Explosions at the volcano lasted 20 hours, generating pyroclastic flows and a column of ash up to 6 500 m (21 325 feet) above sea level. Ash…
Mount Kusatsu-Shirane erupts after 35 years of calm, leaves one dead and 18 injured
A sudden eruption took place at Kusatsu-Shirane volcano (Kusatsu-Shiranesan) in Japan early Tuesday, January 23, 2018, causing an avalanche that left one member of Japan's Self-Defense Forces (SDF) dead and 6 injured. At least 11 people were injured by falling…
