The alert status at Krakatau volcano in Indonesia has been raised to level 2 (out of a maximum 4). Since 15th April there has been an increase in volcanic earthquakes. Ash emissions have resumed at Anak Krakatau. Booming noises were heard at Pasauran, 42 km from the volcano. Hazards at the volcano include glowing projectiles, landslides, and gas emissions.
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