What to Expect During a Volcanic Eruption in Indonesia | Sequence of Events and How to Survive It

If a volcano threatens your village, town or travel route in Indonesia, follow the latest PVMBG and BPBD instructions for that specific volcano. If your home is inside an officially designated danger or evacuation zone, leave immediately by the approved route to a recognised safe place. Do not climb toward the crater, cross a lahar-prone river, enter a restricted village or try to photograph a pyroclastic flow. A fast-moving hot cloud or debris flow cannot reliably be escaped at close range by running or driving.

For the current scientific status, consult MAGMA Indonesia, the Geological Agency/PVMBG and the local BPBD disaster-management authority. Indonesia uses Level I Normal, Level II Waspada, Level III Siaga and Level IV Awas, but each volcano has its own exclusion distances and mapped valleys. Do not copy another volcano’s radius. For urgent rescue, Indonesia’s Basarnas operates 115, and Polri operates 110. The integrated 112 emergency line is deployed through local government services, so check that it is operational where you are; 119 serves medical emergencies in relevant arrangements.

Quick answer: An Indonesian volcanic emergency may progress from changes detected by the volcano observatory to a revised alert level and exclusion zone, followed by ash emissions, explosions, lava or hot pyroclastic flows. Rain may remobilise loose volcanic material into lahars, even when the crater appears quiet. Nearby coastlines may have additional tsunami considerations at certain volcanoes, but an eruption does not automatically produce a tsunami. Some eruptions begin with limited warning, so the correct protective action depends on the *actual* hazard and current local instruction rather than a national one-size-fits-all countdown.

Twelve urgent actions for residents and visitors

1. Read the current PVMBG/MAGMA report for the correct volcano, issue time, status level, specific radius and downstream hazard valleys.
2. If BPBD or the local government orders evacuation, leave by the authorised route immediately. Do not wait for ash to appear at your front door.
3. Do not enter a volcano’s exclusion zone, whether the summit looks calm or another visitor is taking photographs there.
4. Stay away from riverbeds, gullies and bridges draining the volcano when ash, eruption debris or heavy rain create lahar danger.
5. If ash is falling outside an evacuation area, enter a suitable building, protect breathing and eyes, and keep food and drinking water covered.
6. Never assume a mask or a room protects against hot pyroclastic flows, large bombs, lava or serious volcanic-gas exposure.
7. Move children, older adults, disabled people and anyone requiring medical treatment early, before access roads are restricted.
8. Do not drive through thick ash, mud, flooded channels or closed roads. Bridges may be damaged beneath a layer of sediment.
9. For urgent search and rescue, call Basarnas 115; for police emergencies use 110, and check the local 112 and medical 119 arrangements.
10. Report injuries, breathing distress, contaminated water and building damage through recognised health and disaster channels.
11. Continue monitoring after an eruption pauses. Further explosions or rain-triggered lahars can occur.
12. Return only after authorities permit access and consider building, water and utility safety.

Stage 1 — Indonesia’s volcanic landscape: why the same word covers many different events

Indonesia sits along active tectonic boundaries and contains numerous monitored volcanoes. Some eruptive systems produce explosive ash and dangerous projectiles; others generate lava, pyroclastic currents, dome collapses or rain-triggered debris flows. The topography, nearby population, crater geometry and downstream river systems change the risks.

A visitor to a volcano on Java, Sumatra, Sulawesi, Halmahera or the Sunda Strait should not copy safety advice from another island without checking the actual volcano. Even two eruptions at the same volcano may have different plume direction, intensity and hazard boundaries.

Indonesia’s Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG), within the Geological Agency of the Ministry of Energy and Mineral Resources (ESDM), monitors volcano activity. Its MAGMA Indonesia portal and official reports help residents understand status and recommended restrictions.

The first household questions are: Is this address inside a hazard zone? Does the evacuation road cross a river descending from the volcano? Which local BPBD and village leader gives the actual relocation direction? Which household members require help reaching a safe site?

Stage 2 — How PVMBG decides whether activity is changing

Scientific monitoring includes seismometers, visual reports, gas observations, deformation and other measurements. Changes can indicate magma movement, pressure, instability or eruption processes. But an increase in earthquakes or gas does not always lead to a predictable eruption at a specified hour.

The agency evaluates evidence and issues activity levels and technical recommendations. Observations can change rapidly, especially in an eruptive crisis. A report may describe the direction of an ash plume, an eruption column, tremor, hot avalanches or the potential for ash to affect a local settlement.

A science report and a household evacuation instruction have different jobs. PVMBG evaluates the volcano and recommends zones; local BPBD, the regional government, police and other responders organise actual protective actions, routes and shelters.

Do not interpret an absence of new social-media videos as evidence the volcano has stopped. Use official time-stamped reporting and local instructions rather than guessing from the visibility of the crater.

Stage 3 — Level I to Level IV: what the Indonesian alert system communicates

The Indonesian volcanic activity system is commonly explained as four levels, described by the Ministry of Energy and Mineral Resources.

1. Level I — Normal: Activity is near the volcano’s assessed baseline; limited local hazards, including gas near some craters, may still occur.
2. Level II — Waspada: Signs of increased activity are being observed. Residents and visitors must follow the particular volcano’s enhanced precautions and access restrictions.
3. Level III — Siaga: Unrest or eruptive activity has increased significantly. More serious exclusion or evacuation instructions may apply to particular areas.
4. Level IV — Awas: The highest alert level, associated with very serious eruption danger to exposed areas and urgent protective action.

These are not distances, automatic national evacuation orders or guarantees about exactly when a volcano will erupt. A Level III report for one volcano can specify a particular radius and sector that differs from another Level III report.

Even at Level I, a specific area near a crater may remain unsafe because of gas or unstable ground. A family should always read the report’s written recommendations, not only the colour or Roman numeral.

Stage 4 — The exclusion zone: why the exact map matters

PVMBG may designate a radius from the active crater, sectors following a valley or other geographical restrictions. These are based on a particular volcano’s observed and anticipated hazards.

In a September 2026 update about Anak Krakatau, ESDM reported a Level III Siaga status and instructed people not to approach within three kilometres of its activity centre. That was a dated recommendation for Anak Krakatau, not a universal three-kilometre safe rule or confirmation of its present status.

Other volcanoes may have different directions, radii and river hazards. A 2025 Gunung Ibu warning included a five-kilometre exclusion radius and a six-kilometre sector, illustrating how restrictions can be asymmetrical.

Never stand at the nominal edge of a generic circle and assume it is safe. Read the actual boundary, local map, changing wind and local government’s access instructions. Pyroclastic flows can travel along particular valleys, while ash can fall well outside a crater-exclusion radius.

Stage 5 — A warning arrives at the village: early evacuation is the strongest safeguard

When local government and BPBD direct residents of an exposed area to evacuate, act while the route remains safe. Do not wait for visible lava, ash or a dramatic explosion. A valley road may become impassable because of lahars or falling debris before the eruption itself reaches the settlement.

Gather medicine, identity documents, practical clothing, safe water, a flashlight, phone power and necessities for infants or people with disabilities. Keep these accessible in a small bag before the crisis. Do not delay movement to load furniture or recover crops.

An authorised temporary shelter (*pos pengungsian*) should be selected according to actual hazards and local capacity. A school near the volcano’s river channel may be less suitable than a more distant recognised site. Follow the local BPBD destination rather than assume any large building is safe.

A person with reduced mobility, oxygen needs or ongoing medication may need earlier assisted transport. Contact local health and community services before the road is closed.

Stage 6 — The first eruption: ash, explosions and falling material

An eruption may produce a plume of fine ash, volcanic bombs, gas and other material. The amount and direction depend on the event, wind and volcano. In some cases, the first observable effect at a town is falling ash rather than a visible lava flow.

Do not approach the crater or summit to obtain a better view. Rocks can be ejected at high speed, and volcanic gas may be dangerous even when the plume seems small. A closed tourist trail remains closed regardless of photographs taken by other visitors.

If ash falls at a community outside any evacuation order, the BNPB volcano safety guidance recommends appropriate masks and protective glasses, staying in a safe place and following official instructions.

A particle mask can reduce some dust exposure if it fits well, but it cannot filter all volcanic gases, provide structural protection or stop large rocks. The relevant question is which hazard is actually threatening your location.

Stage 7 — Hot pyroclastic flows: a hazard you cannot outrun at close range

A pyroclastic density current, often called awan panas, is a fast-moving mixture of hot gas, ash and volcanic material that may flow down volcano slopes or valleys. It is a life-threatening hazard for people in its direct path.

A person cannot reliably survive a major pyroclastic flow simply by taking shelter behind a door, covering the mouth with a cloth or driving faster. The correct measure is preventive evacuation out of the mapped danger zone before release, following PVMBG and BPBD instructions.

Some eruptions involve collapse of a growing lava dome or other hot material, generating such currents. Even if the crater appears relatively quiet during an interval, unstable deposits and new lava growth may make another event possible.

Do not enter river valleys, exposed viewpoints or roads known to lie within the recommended exclusion area. A low channel can concentrate destructive flow rather than provide a sheltered escape.

Stage 8 — Lava flows: do not assume all volcanic hazards move slowly

Molten lava may flow from a vent or along slopes, depending on magma characteristics and terrain. Some lava advances relatively slowly, but movement can change and can destroy roads, structures or vegetation.

Its appearance is often dramatic, drawing crowds and tourists. However, volcanic gas, falling fragments, unstable ground and road closures may be more immediately threatening than the visible front.

Do not step onto dark new lava or approach an apparently cooled surface. Heat, unstable crusts and voids may remain. Follow exclusion zones and never attempt to cross a lava-covered road.

A family should not use the apparent speed of lava as a reason to delay an actual evacuation order. An eruption can also include ash, explosions or pyroclastic currents that behave very differently.

Stage 9 — Volcanic ashfall: what to do inside a home

Fine volcanic ash consists of abrasive rock and glass particles. It can irritate eyes and airways, reduce visibility, damage machinery and collect on roofs. Its density and load increase when wet.

When outside a mandatory evacuation zone and advised to shelter for ashfall, close exterior doors and windows as practical while maintaining safe ventilation. Avoid unnecessary outdoor activities. Keep stored food and drinking water covered.

Use appropriate particulate respiratory protection and goggles when essential exposure cannot be avoided. A well-fitting N95/KN95-type mask can help filter particles, but does not protect against toxic volcanic gas. Do not rely on a wet scarf to make a dangerous vent safe.

Avoid rubbing ash from the eyes because mineral fragments can scratch them. Move into cleaner air and rinse carefully with clean water or suitable eyewash. Seek professional care if there is eye pain, reduced vision or persistent irritation.

People with asthma, heart or lung disease, children, pregnant people and older adults may need earlier reduction of exposure and medical advice.

Stage 10 — Roof load, rain and ash cleanup: do not create a second accident

Heavy ash deposits can add weight to roofing, especially after rain. Some older, weak or lightly constructed roofs may be vulnerable to damage or collapse.

Do not climb onto a wet, ash-loaded or structurally compromised roof to remove material without suitable training, equipment and local authorisation. The roof may be slippery or weakened. Seek competent help and follow municipal instructions about safe cleaning.

After ashfall ends and cleanup is approved, collect ash carefully rather than sweeping it into the air. Avoid washing large amounts into drains, which can create heavy sludge and obstruct drainage.

Follow local waste-disposal instructions. Different communities may arrange specific collection methods for volcanic material. Avoid placing ash into drinking-water tanks or channels.

A house may require structural assessment even when ash has been cleared. Visible cleanliness is not proof of roof or electrical safety.

Stage 11 — Lahars: why rainfall after the eruption can be deadly

A lahar is a flow of water mixed with volcanic ash, soil and rock, often moving through channels descending from the volcano. In Indonesia, heavy rain can remobilise deposits well after a major eruption appears quieter.

The BNPB volcano preparedness guide specifically warns that heavy rainfall can create banjir lahar dingin, carrying volcanic material and debris along rivers.

Do not stand on a bridge or in a riverbed to watch a muddy surge. Large rocks and debris can strike supports, and riverbanks can erode suddenly. A crossing that looks shallow may conceal major damage to the road.

If a local official warns about lahar risk, leave the mapped river corridor before the water arrives. Rainfall upstream on the volcanic slopes can trigger a flow even when it is not raining heavily at your home.

An ash mask and a strong building near a lahar channel are not enough. The protective decision may require early movement to designated higher, stable ground away from the flow path.

Stage 12 — Coastal hazards: when volcanic activity and tsunami risk intersect

A few volcanic settings can create coastal tsunami hazards through landslides, volcanic collapse or other displacement of water. An eruption does not automatically mean a tsunami will occur, and every coastline has different exposure.

Indonesia’s BMKG account of the 22 December 2018 Sunda Strait tsunami explained that the event was not triggered by a tectonic earthquake. It is an important historical example of why coastal tsunami risk cannot be judged solely from whether earthquake shaking was felt.

However, a current volcano Level III notice does not by itself prove that a tsunami is imminent. In its September 2026 Anak Krakatau update, ESDM told coastal communities in Banten and Lampung to remain calm, reject unverified tsunami rumours and follow BPBD instructions.

If a local coastal tsunami warning or natural danger is present, move away from exposed shores, river mouths and low ground according to authorised routes. Do not wait for a large wave to appear. Follow BMKG, PVMBG and local disaster authorities.

Stage 13 — Local examples: Merapi, Semeru and other volcanic systems

Merapi, Central Java and Yogyakarta region: Danger can include dome-related pyroclastic flows, hot debris and rain-triggered lahars along particular river valleys. The correct safe area depends on the latest PVMBG recommendations and local evacuation plan.

Semeru, East Java: Eruption columns, hot avalanches and material carried along river corridors may threaten specific areas. A mountain visitor should never infer that the summit is safe because a distant village appears unaffected.

Anak Krakatau, Sunda Strait: Island volcanic activity, ash, bombs and associated coastal concern require following current PVMBG and BMKG information, with separate maritime and tsunami instructions where appropriate.

Ibu, Halmahera: Eruption columns, ash and ejected material may require a crater radius and sector exclusion. Local air and road conditions differ from those of volcanoes on Java.

Sinabung, North Sumatra: Earlier and 2026 activity reports illustrate how volcanic ash, exclusion zones and possible lahars may affect communities. Specific relocation and access restrictions matter.

Ruang, North Sulawesi: Its 2024 eruption was an example of an urgent island evacuation, but historic restricted distances must not be copied as current advice.

This list is illustrative; current MAGMA/PVMBG reports for each named volcano control its actual status and hazard area.

Stage 14 — BPBD and village instructions: whose evacuation order should you follow?

PVMBG produces scientific status and recommended restrictions. The local Badan Penanggulangan Bencana Daerah (BPBD), district or city authorities, village leaders, police and other response agencies coordinate evacuations, shelters, roads and emergency support.

A scientific recommendation may name a particular village, stream corridor or sector. The local authority translates that into practical movement: the authorised destination, meeting point, transport and support for people with disabilities.

An evacuation centre may be open for only part of the affected population. Do not assume that a building used as a shelter in the last eruption is necessarily designated this time.

When in doubt, contact the recognised BPBD or village authority and provide your exact location. Do not wait for a major ash plume to verify an order already given directly by emergency officials.

Stage 15 — Indonesia’s emergency numbers: know coverage limitations

The Ministry of Communication and Digital Affairs explains the 112 integrated emergency call programme, which links local government dispatch to police, medical and fire agencies. The implementation guidance describes how provinces, districts and cities establish and activate the service. Not every locality should be assumed to have identical 112 dispatch readiness.

115 — Basarnas search and rescue: confirmed on the official Basarnas contact page. Use it for an urgent rescue or missing-person emergency.

110 — Police: confirmed by the Indonesian National Police; the service accepts reports about accidents, natural disasters and urgent public-safety incidents.

119 — medical emergency: listed as part of the integrated emergency system. Verify actual local ambulance and health facility arrangements.

112 — integrated local emergency dispatch where operational. Confirm coverage and save the local BPBD and healthcare contacts before travelling near a volcano.

These numbers serve different purposes; a scientific information portal does not dispatch an ambulance. Report precise location, injuries and whether the route is blocked.

Stage 16 — Transport disruption: roads, airports, ferries and tourist routes

Ash can reduce visibility, make roads slippery and affect vehicles. Eruptions may also prompt flight cancellations or airport restrictions, depending on the plume location, weather and aviation authorities.

A flight cancellation at one airport does not establish that every flight in Indonesia has stopped. Conversely, an operating airport does not prove that a nearby mountain trail is accessible. Check the actual transport operator and authorities.

Do not drive through an ash-covered restricted route, a flooded volcanic river or a closed bridge simply to reach an airport or ferry. A navigation app may not reflect the latest volcano exclusion or road condition.

Visitors should learn the name of the volcano, district, village and accommodation, and find the official local emergency contact before entering a region. A travel photograph or previous tour review is not proof that a volcano can be climbed today.

Stage 17 — Temporary shelter: what families need after relocation

At a recognised evacuation centre, tell organisers about medicine, mobility needs, pregnancy, infant feeding and any urgent injuries. Keep family members accounted for and use official reunification arrangements when necessary.

Children may feel frightened by ash, loud explosions or loss of their home environment. Give age-appropriate truthful explanations and a predictable routine when possible. Do not promise a specific date of safe return.

Keep drinking water and food supplies protected from ash. Use appropriate sanitation and follow health-worker instructions. A centre may need to relocate if a new hazard map or eruption changes its exposure.

Do not publish identifying medical details of displaced people on public social media. Use authorised welfare and rescue communication channels.

Stage 18 — Electricity, water and medical safety after eruptions

An eruption may damage pipes, water tanks, electricity networks and road access. Ash and mud can enter water storage and machinery. Some sources may contain chemical contaminants that ordinary boiling does not remove.

Use confirmed-safe drinking water and follow local health and water authority notices. Boiling can kill many microbes, but does not remove every dissolved chemical, fuel or salt. If a do-not-drink advisory applies, use an approved alternative.

Do not switch on wet or ash-damaged electrical equipment without qualified assessment. Never run petrol generators or charcoal burners inside an enclosed shelter or house because carbon monoxide poisoning can be fatal.

Seek urgent care for severe breathlessness, serious burns, traumatic injuries or unconsciousness. Follow prescribed respiratory treatment and ask clinicians about persistent ash-related symptoms.

Stage 19 — If ashfall stops, the volcano may still be dangerous

An eruption can pause while magma and gas remain active. Renewed explosions, hot debris or lava may follow. Ash deposited earlier may become airborne again in wind, and rain may generate lahars.

Do not interpret a clear view of the crater or a dramatic sunset as evidence that access is safe. Continue reading the official PVMBG reports and local restrictions.

An area may remain closed while scientists assess new activity, roads or changes in drainage channels. A neighbour returning without permission is not proof that the official danger has passed.

Some hazards remain far downstream, especially along river valleys. A family may need to avoid crossings even when the crater’s activity level has fallen.

Stage 20 — Returning to a village: step-by-step safety

Return only after local authorities permit access. Follow the actual route and any time restrictions. Check from a safe position for roof damage, unstable trees, cracks, ash loading, exposed wires and blocked drainage.

If the building is seriously damaged, stay outside and request professional evaluation. A home cleaned of ash may still have structural or utility risks.

Do not collect water from an affected tank or well until it has been assessed or treated appropriately. Avoid eating ash-contaminated food that cannot be properly cleaned.

Document damage only when safe for legitimate assistance, property or insurance processes. Reject requests for passwords, banking PINs or fees to guarantee relief.

Stage 21 — Farms, tourism and longer-term livelihood recovery

Volcanic ash may affect crops, grazing, animal water, roads and markets. Some ash can change soil properties over time, but heavy deposits and contamination can create immediate damage. Replanting and animal care require local agricultural or veterinary assessment.

A farmer should not use contaminated animal feed or water without advice. A tour operator should not reopen an exclusion-zone trail because the previous day’s photographs look normal.

Communities displaced for a long period may need continued housing, education, medical care and income support. A school reopening does not necessarily mean every family can return home, especially if particular villages remain restricted.

Recovery planning should include safe drainage, warning communication, accessible evacuation routes and the needs of people who require assistance during relocation.

Three illustrative volcanic emergency scenarios

Scenario A — A family near an exposed river below a volcano: PVMBG warns of increased activity and a possible lahar threat. BPBD identifies a village section for early evacuation. The family leaves via a route that avoids the river, taking medicine and water. Later, a muddy debris flow closes the bridge; they do not attempt to return across it.

Scenario B — Ash falls in a city outside an evacuation zone: Residents close windows, limit outdoor activity and protect water and food. An asthmatic family member follows their prescribed plan. The household waits for municipal cleanup instructions and avoids climbing onto a wet ash-loaded roof.

Scenario C — Visitors see a summit restricted zone: A group plans a hike based on an old photograph, but the current MAGMA/PVMBG recommendation prohibits approaching the crater. They cancel the hike and use an authorised alternative activity instead. Their decision avoids a dangerous attempt to test the exclusion boundary.

These are fictional situations, not a live eruption report or a claim that any named Indonesian volcano is currently safe or unsafe at a particular distance.

Nine dangerous misconceptions

1. “Level I means every crater is safe.” Gas and other local hazards can remain.
2. “Level III always means three kilometres of exclusion.” Each volcano has its own written radius, sectors and map.
3. “A volcanic gas mask is the same as an ash mask.” Ordinary particle masks do not remove all gases.
4. “Pyroclastic flows can always be outrun.” They may be extremely fast and destructive.
5. “All lava is slow, so no advance evacuation is necessary.” Eruptions can include other hazards and changing activity.
6. “A lahar requires a new eruption that day.” Heavy rain can remobilise older volcanic deposits.
7. “An eruption automatically creates a tsunami.” Specific processes and locations matter, and official warnings must be followed.
8. “When ash stops, the volcano has finished erupting.” Activity and rain-related hazards may persist.
9. “The same 112 service operates identically everywhere.” Indonesia’s integrated dispatch is implemented through local governments.

Household and travel preparation checklist

• Save MAGMA Indonesia and the Geological Agency for current volcano-specific reports.
• Find the actual PVMBG exclusion radius, sectors and downstream river hazards for the volcano near your location.
• Know the local BPBD, village leader and authorised evacuation shelter.
• Save 115 Basarnas, 110 police, and verify local 112 and 119 arrangements.
• Prepare identification, medicine, lighting, safe water, food, phone power and appropriate footwear.
• Have particulate masks and goggles for necessary ash exposure, but do not use them as permission to enter dangerous gas or flow zones.
• Plan early transport for children, older adults, disabled people and people needing regular medical treatment.
• Avoid crater trails, exposed valleys, lahar channels, closed bridges and coastal tsunami-risk areas when warned.
• Protect water and food and do not climb onto unsafe ash-loaded roofing.
• Return only after BPBD and local authorities permit access.

Frequently asked questions

What are Indonesia’s four volcano alert levels?

Level I Normal, Level II Waspada, Level III Siaga and Level IV Awas. The current PVMBG report explains the specific danger and exclusion zone.

Is every Level III volcano subject to the same exclusion radius?

No. Restrictions differ by volcano and may include sector-specific zones and downstream channels. Always check MAGMA/PVMBG for that location.

What should I do when ash is falling?

Outside an evacuation area, follow local advice, reduce outdoor exposure, protect eyes and breathing and keep water and food covered. If ordered to evacuate, leave.

Can a mask protect me from a pyroclastic flow?

No. Masks do not protect against destructive hot flows, major volcanic bombs, severe gas exposure or building collapse. Preventive evacuation is essential.

Can lahars occur after an eruption has stopped?

Yes. Heavy rain can remobilise older ash and debris along volcanic rivers. Avoid the mapped channels and heed rainfall warnings.

Is a volcanic eruption in Indonesia always followed by a tsunami?

No. Tsunami risk depends on specific processes and geography. Follow BMKG, PVMBG and local BPBD instructions; do not circulate unverified claims.

Which emergency number should I call?

115 for Basarnas search and rescue, 110 police; 112 integrated emergency dispatch where operational, and 119 medical in relevant services. Know local BPBD and healthcare contacts.

When can I return home?

Only after the responsible authority lifts restrictions and access, structure, utilities and water conditions are sufficiently safe.

Official Indonesian sources and connected eduKate guides

• PVMBG — MAGMA Indonesia: current volcano reports, activity levels and written recommendations.
• Indonesia Geological Agency — Official Volcano Information: technical information and local monitoring.
• Ministry of Energy and Mineral Resources — Four Volcano Alert Levels Explained: Normal, Waspada, Siaga and Awas.
• BNPB — How to Prepare for and Respond to an Eruption: evacuation, ashfall, shelters and lahars.
• ESDM — Anak Krakatau Update, September 2026: dated Level III example, not current status.
• BMKG — Sunda Strait Tsunami Scientific Statement, December 2018: why tsunami mechanisms require separate warnings.
• Basarnas — Official Search and Rescue Contact 115: urgent search-and-rescue.
• Polri — Official 110 Emergency Contact: police and disaster-related reporting.
• Komdigi — Integrated 112 Emergency Service: programme and local dispatch system.
• Komdigi — 112 Local Government Activation: why coverage differs by district and city.
• eduKateSG — Volcanic Eruption in Chile: another four-level/new scientific alert structure and local evacuation.
• eduKateSG — Volcanic Ashfall in Ecuador: household protection against airborne volcanic material.
• eduKateSG — Lahar in the Philippines: separate sediment-flow hazards along volcano drainage channels.
• eduKateSG — Tsunami in Indonesia: Indonesian coastal evacuation and natural tsunami warning response.

Reader note — reviewed 7 November 2026: This is general volcanic preparedness, not a live status for a particular crater, guarantee of safe exclusion distance or rescue dispatch service. The latest PVMBG/MAGMA report, local BPBD order, BMKG warnings and authorised responders take priority.