Mount Anak Krakatau Eruption Today: Latest Status, Volcanic Ash and Its Impacts

Eduteknoid.com – The eruption of Mount Anak Krakatau has once again attracted attention following increased volcanic activity since early September 2026. The continuous eruption, which began on Friday, September 4, 2026, subsequently resulted in volcanic ash spreading to several areas and disrupted flight operations.

Mount Anak Krakatau is located in the waters of the Sunda Strait and is administratively part of South Lampung Regency, Lampung Province. The volcano remains at Level III or Alert status.

According to the latest information from the Ministry of Energy and Mineral Resources (ESDM), the continuous eruption episode that began on September 4, 2026, at 11:07 p.m. Western Indonesia Time (WIB) ended on Sunday, September 6, 2026, at 12:04 a.m. WIB. Subsequent eruptive activity was still recorded afterward.

Mount Anak Krakatau Status Today

The question of Mount Anak Krakatau's status today has become one of the most frequently searched pieces of information by the public.

The Center for Volcanology and Geological Hazard Mitigation (PVMBG) stated that Mount Anak Krakatau's activity level remains at Level III (Alert) even though the continuous eruption episode lasting approximately 25 hours has ended.

This means that the end of one eruption episode does not mean that volcanic activity has completely stopped. PVMBG stated that volcanic activity is showing a declining trend, but the potential for subsequent eruptions remains.

Therefore, the public should continue to follow official information from PVMBG, the Geological Agency, BNPB, BMKG, and local governments.

When Did Mount Anak Krakatau Erupt?

The recent continuous eruption that attracted attention began on:

• Friday, September 4, 2026

• around 11:07 p.m. WIB

• continued until Sunday, September 6, 2026, at around 12:04 a.m. WIB

The Geological Agency had previously reported that Mount Anak Krakatau had been at Level III (Alert) since July 2, 2026. Strombolian-type eruptive activity had also occurred before the continuous eruption episode in early September.

During the episode, volcanic activity was accompanied by rumbling sounds or booming noises. At night, visual observations showed red bursts associated with eruptive activity and a phenomenon resembling a lava fountain.

Where Has Anak Krakatau Volcanic Ash Spread?

One of the main impacts of the eruption is the spread of volcanic ash.

On September 6, 2026, BMKG reported satellite-image analysis showing two clusters of volcanic ash distribution covering areas of Banten, Jakarta, West Java, and Bengkulu.

BMKG also increased monitoring of the atmosphere, aviation, and sea conditions around the Sunda Strait.

As wind conditions change, the direction of ash dispersion can also change. Therefore, the public should not use outdated information as a reference for determining air conditions in a particular area.

Has Anak Krakatau Volcanic Ash Reached Jakarta?

Yes. Volcanic ash from Mount Anak Krakatau's activity has affected several areas of Jakarta.

The Jakarta Provincial Government even implemented Distance Learning (PJJ) starting Monday, September 7, 2026, as a precautionary measure against exposure to volcanic ash. The policy applies to educational institutions in Jakarta until further notice.

In Jakarta, residents are also advised to pay attention to air conditions and follow government instructions if exposure to volcanic ash increases.

Is Volcanic Ash Dangerous?

Volcanic ash should be treated with caution because its particles can be carried by the wind and enter areas where people are active.

Exposure to volcanic ash can affect the respiratory system and cause irritation to the eyes and skin. Therefore, people in affected areas should follow health recommendations from local governments and relevant agencies.

One protective measure recommended by local authorities is to wear a mask when in areas containing volcanic ash and reduce outdoor activities if air quality deteriorates.

Why Was Soekarno-Hatta Airport Affected?

The spread of volcanic ash has also had a serious impact on aviation.

Soekarno-Hatta Airport was among the airports that experienced a temporary closure due to indications of volcanic ash spreading through the airspace.

The Ministry of Transportation monitored the situation in coordination with BMKG, airport operators, airlines, AirNav Indonesia, and other relevant parties.

On September 6, 2026, the closure of several airports was even extended based on developments in volcanic ash dispersion monitoring.

Airport conditions were also tested periodically. The Minister of Transportation stated that a paper test was conducted every 30 minutes to monitor the possibility of ash spreading into other airspace areas.

Is Soekarno-Hatta Airport Closed?

The operational status of airports can change depending on ash dispersion conditions and aviation safety evaluations.

On Sunday, September 6, 2026, Soekarno-Hatta Airport was among the airports temporarily closed due to the impact of volcanic ash from Mount Anak Krakatau.

AirNav Indonesia subsequently updated the closure information through NOTAM. In one update, the closure of Soekarno-Hatta Airport and several other airports was extended until approximately 11:59 p.m. WIB on September 6.

Because flight status can change rapidly, prospective passengers should check the latest information directly with their airline or airport operator before departing.

How Many Flights Were Affected by the Anak Krakatau Eruption?

The eruption had a significant impact on air travel.

The Ministry of Transportation reported that 1,558 flights were affected at eight airports due to temporary closures related to volcanic ash from Mount Anak Krakatau. The impact included flights disrupted by cancellations, delays, and operational changes.

Meanwhile, Soekarno-Hatta Airport management recorded 1,039 affected flights based on data collected through Sunday evening. This figure represents the accumulated number of flights that were canceled, delayed, or diverted to other airports.

This situation demonstrates that the impact of an eruption is not limited to the area surrounding Mount Anak Krakatau but can also extend to the air transportation sector.

Why Were Booming Sounds Heard?

Booming or rumbling sounds heard in certain areas have attracted public attention.

BNPB reported that during the continuous eruption episode of Mount Anak Krakatau, booming and rumbling sounds were heard from the Anak Krakatau Volcano Observation Post in Pasauran.

Therefore, in the context of the recent activity, these sounds may be associated with volcanic activity at Mount Anak Krakatau. However, reports of booming sounds from other locations still need to be verified based on monitoring results from BMKG or other authorized agencies.

Where Is Mount Anak Krakatau Located?

Mount Anak Krakatau is located in the waters of the Sunda Strait, between the islands of Java and Sumatra.

Administratively, Mount Anak Krakatau is part of South Lampung Regency, Lampung Province.

Volcanic activity is monitored through the Anak Krakatau Volcano Observation Post in Kalianda, South Lampung, as well as the observation post in Pasauran, Serang Regency, Banten.

Therefore, if someone asks “Where is Mount Anak Krakatau located?”, the answer is that it is in the Sunda Strait area and is administratively located in South Lampung Regency.

Is Mount Krakatau Still Active?

Yes. Mount Anak Krakatau is an active volcano and its current activity level is Level III (Alert).

Anak Krakatau was formed following major activity in the Krakatau volcanic complex. The history of the area also includes the major Krakatau eruption of 1883 and the tsunami event on December 22, 2018, which was associated with volcanic activity and the collapse of part of Anak Krakatau's volcanic edifice.

However, the latest eruption should not be directly equated with the events of 1883 or 2018. The risks and characteristics of each eruption episode must be assessed based on the latest monitoring data from PVMBG and relevant agencies.

Is Anak Krakatau Still Erupting?

The continuous eruption episode lasting approximately 25 hours, which began on September 4, 2026, ended on September 6, 2026, at 12:04 a.m. WIB.

However, Mount Anak Krakatau's activity cannot yet be considered completely over. PVMBG stated that volcanic activity has decreased, but the potential for subsequent eruptions remains.

Therefore, the more accurate description is that volcanic activity is still being monitored and Mount Anak Krakatau remains at Level III (Alert), rather than stating that the volcano is completely calm.

What Should the Public Do?

People in areas affected by volcanic ash should:

1. Follow official information from the government and relevant agencies.

2. Reduce outdoor activities when volcanic ash increases.

3. Wear a mask as recommended by health authorities.

4. Protect the eyes when air conditions contain significant amounts of ash.

5. Do not approach the Mount Anak Krakatau area.

6. Do not spread unverified information.

7. For air travelers, check flight status before heading to the airport.

BNPB specifically reminded the public not to approach the volcano area to observe the eruption or take pictures because there is still a potential for material to be ejected from the active crater.

Conclusion

Mount Anak Krakatau is currently at Level III (Alert). The continuous eruption episode that lasted approximately 25 hours from September 4, 2026, ended on September 6, 2026, but volcanic activity is still being monitored and the potential for subsequent eruptions remains.

Volcanic ash has affected several areas in Banten, Jakarta, West Java, and other regions. The impact has also been felt in the aviation sector, including at Soekarno-Hatta Airport.

Information regarding the Mount Anak Krakatau eruption today, volcanic ash conditions, airport status, and flight operations may change at any time. Therefore, the public should use PVMBG, BMKG, BNPB, the Ministry of Transportation, and local governments as their primary sources of information.

This article was updated based on information available as of September 7, 2026, and may be updated again if new official developments become available.