Anak Krakatau, the infamous volcano situated between the islands of Java and Sumatra, has experienced a series of significant eruptions since June 6, 2023. The Indonesian volcano, known as the “Child of Krakatau,” is located in the crater formed by the devastating eruption of Mount Krakatau in 1883, one of the deadliest and most destructive in recorded history.
A significant rock avalanche took place on June 11, 2023, descending from the slopes of Flüchthorn in the Austrian Alps. Flüchthorn, also known as Piz Fenga due to its location on the Austria-Switzerland border, stands 3 399 m (11 150 feet) high in the Silvretta Alps.
Tropical Cyclone “Biparjoy” formed in the Arabian Sea on June 6, 2023, as the second named storm of the 2023 North Indian Ocean cyclone season. The system is moving northward, threatening the coasts of Pakistan and neighboring Saurashtra and Kutch, India.
On June 10, 2023, Quintana Beach County Park officials reported an unprecedented occurrence of mass Menhaden fish deaths. Thousands of fish were found washed up on the shores due to an apparent reduction in dissolved oxygen levels in the water.
After increased unrest detected since June 5, the activity at Mayon volcano in the Philippines increased further on June 11 with lava flowing from the summit crater.
A strong earthquake registered by the JMA as M6.2 hit Hokkaido, Japan at 09:54 UTC on June 11, 2023. The agency is reporting a depth of 140 km (87 miles). USGS is reporting M5.2 at a depth of 123 km (76 miles), EMSC M6.2 at a depth of 112 km (69 miles).
The Mayon volcano in the province of Albay, Bicol Region, central Philippines, is showing signs of increased activity since June 5, 2023, when the Alert Level was raised to 2. On June 8, the Alert Level was raised to 3, prompting authorities to issue evacuation orders for all residents living within a 6 km (6 miles) radius of the crater — about 17 000 people. Another 40 000 people will have to evacuate if the Alert Level is raised to 4.
New activity/unrest was reported for 7 volcanoes from May 31 to June 6, 2023. During the same period, ongoing activity was reported for 22 volcanoes.
At approximately 14:44 UTC (04:44 HST) on June 7, 2023, the USGS Hawaiian Volcano Observatory (HVO) detected a glow in Kīlauea summit webcam images indicating that an eruption has commenced within Halemaʻumaʻu crater in Kīlauea’s summit caldera, within Hawai‘i Volcanoes National Park.
Increased earthquake activity and changes in the patterns of ground deformation at Kīlauea’s summit began occurring on June 7, 2023, indicating the movement of magma in the subsurface.
