Anak Krakatau, the small volcano with a big personality nestled between Java and Sumatra, has been at it again. While its eruptions are usually the volcanic equivalent of a polite cough, early September 2026 brought a full-throated roar that lasted over 24 hours, sending gas and ash skyward and generally making a nuisance of itself.

Satellites caught the tantrum in action on September 5. The Landsat 8 satellite's OLI (Operational Land Imager) snapped a picture of a white plume of volcanic gas billowing over a brown ash cloud, while the Suomi NPP satellite's VIIRS (Visible Infrared Imaging Radiometer Suite) showed the ash dispersing over a wide area. Because nothing says 'impressive' like a satellite photo op.

Indonesia's meteorological agency reported that by September 6, ash had climbed to 6,000 meters (20,000 feet) east of the volcano and a whopping 15,000 meters (50,000 feet) to the west. This airborne debris prompted the temporary closure of eight airports on Java and Sumatra, throwing nearly 3,000 flights into disarray. Because who needs to travel when there's a volcano showing off?

Ashfall didn't just stay in the sky; it settled over populated areas, including Jakarta and parts of West Java, as the Indonesian Humanitarian Coordination Platform (IHCP) dutifully noted. While volcanic ash is great for soil, it's less great for human respiratory tracts, eyes, and skin. The IHCP helpfully pointed out that this ash is different from peatland fire smoke, in case you were worried about confusing your airborne particulates.

By September 6, the continuous explosive eruption subsided, settling back into the volcano's usual routine of Strombolian eruptions - intermittent spurts of ash and material, like a geyser with anger issues. Airports resumed operations by September 8, but Anak Krakatau remains on the second-highest alert level, a status it has held since early July. Because some volcanoes just like to keep everyone on edge.