Indonesia’s Mount Semeru erupts, spews ash 1,000m high and sends 4.5km pyroclastic flow (opens original article in a new tab)

Indonesia's Mount Semeru erupted, sending a 4.5km pyroclastic flow and a 1,000m ash plume

• Indonesia's Mount Semeru erupted on June 19, 2026, generating a pyroclastic flow that traveled 4.5 kilometers
• The eruption produced an ash plume rising 1,000 meters above the summit
• Mount Semeru remains at Level III (Alert) status