What To Do During an Earthquake in Iligan: Safety Guide

a family hides under a table during an earthquake; iligan safety guide steps are listed on the right side of the image.

Understanding Earthquake Risks in Iligan City

Iligan City sits on the northern coast of Mindanao, facing Iligan Bay — and directly within one of the Philippines’ most seismically active zones. The city falls under the influence of the Lanao Fault System, a significant active fault structure that runs through Lanao del Norte. PHIVOLCS (Philippine Institute of Volcanology and Seismology) has modelled a Magnitude 7.3 earthquake scenario along the Lanao Fault System, with results presented directly to local government and DRRM officers in the region. The recorded fault lines within Iligan City’s boundaries are documented by PHIVOLCS as of February 2023.

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Beyond the Lanao Fault, Iligan and surrounding Mindanao are periodically shaken by earthquakes originating from the Cotabato Fault System to the south, the Philippine Fault Zone running through eastern Mindanao, and offshore subduction-related events in the Moro Gulf and Celebes Sea. On October 10, 2025, an earthquake was felt across Iligan City. On June 8, 2026, a Magnitude 7.0 earthquake struck offshore Sarangani — PHIVOLCS issued a tsunami advisory affecting coastal areas of Mindanao, including Iligan Bay. This is not a historical footnote; it is the active reality of living in this city.

Iligan’s building stock adds another layer of risk. The city has a mix of reinforced concrete commercial structures in the downtown and Mahogany areas, older masonry buildings in residential barangays, and light-frame construction in hillside communities. Older unreinforced masonry buildings — common in Pala-o, Tibanga, and the city center — are most vulnerable to lateral ground shaking.

Coastal barangays facing Iligan Bay — including Luinab, Kiwalan, Bonbonon, Dalipuga, and Del Carmen — carry additional tsunami exposure on top of earthquake risk. Residents in these areas need to treat strong shaking as a tsunami warning in itself, not wait for an official siren.

Earthquake preparedness in Iligan is not optional. The Iligan City Disaster Risk Reduction and Management Office (ICDRRMO) and the Office of Civil Defense – Northern Mindanao (OCD Region X) are the primary agencies responsible for disaster response. Knowing their contacts before an earthquake happens is part of being prepared.

Immediate Actions: Drop, Cover, and Hold On

When the ground starts shaking, the internationally proven protocol is Drop, Cover, and Hold On. This is the official guidance endorsed by PHIVOLCS, OCD, and the National Disaster Risk Reduction and Management Council (NDRRMC).

Step 1 — DROP to your hands and knees immediately. This position prevents you from being knocked over, keeps your head lower than flying debris, and allows you to move if necessary while maintaining stability.

Step 2 — COVER your head and neck with one arm and hand. If a sturdy table or desk is within immediate reach (one or two steps), get under it. In most Filipino homes and offices — where heavy wooden tables and desks are common — this provides real protection from falling objects. If no table is available, crouch against an interior wall away from windows, and cover your head with both arms.

Step 3 — HOLD ON to your shelter if you’re under a table. If no table is available, hold your position. Keep your eyes closed or shielded to protect from dust and debris.

How long do you hold this position? Until the shaking completely stops. Most earthquakes in Iligan last between 10 and 60 seconds, though a major fault rupture can shake for over a minute. Do not move until the ground is still. After shaking stops, count slowly — at least 20 seconds — before standing. This is the start of the 20-second assessment rule (covered in the final section).

During the shaking:

  • Protect your head at all costs — head injuries are the leading cause of earthquake fatalities
  • Stay low — vertical movement and loss of balance cause serious falls
  • Move away from windows, glass partitions, and shelving
  • If you are in bed, stay there and cover your head with your pillow
  • If you are cooking on an LPG stove, the shaking will likely extinguish the flame — do not try to turn off the gas while shaking continues; do it immediately after

Common mistakes Iligan residents make during shaking:

  • Running outside during active shaking (risk of being hit by falling concrete, glass, or GI sheets)
  • Standing in doorways (modern structural engineering does not support this as protective; it exposes you to door swings and structural collapse)
  • Running to neighbors or children in other rooms (stay put and let them do the same)
  • Grabbing valuables or phones before dropping and covering

What To Do If You Are Indoors During an Earthquake

The safest place in any building during shaking is under a sturdy table or desk, or against an interior structural wall away from windows. In Iligan’s context:

In a home: Philippine single-family homes — whether concrete hollow block or wood-frame bahay kubo construction — have specific safe zones. In CHB homes, move toward load-bearing interior walls (not partition walls, not the exterior facade). In wood-frame or mixed construction, the structural frame is actually more flexible and may perform better than masonry walls. In either case, get low and cover your head. Stay away from the CR if it has glass or large mirrors, and away from shelving loaded with jars, appliances, or decorative items.

In a school or university: Iligan has several large schools and universities, including MSU-Iligan Institute of Technology (MSU-IIT). Students should drop under desks immediately. Teachers should call out the Drop, Cover, Hold On command clearly — do not attempt to move students to hallways or exits during shaking. Assembly areas and field evacuation happen only after shaking stops.

In an office or commercial building: Iligan’s commercial buildings along Quezon Avenue, Tibanga Highway, and the Rotunda area are mostly reinforced concrete. Drop under your desk, hold on, and stay away from glass curtain walls and large window panes.

Dangers to avoid indoors:

  • Windows — both for shattering glass and because the wall directly below a window is structurally weaker
  • Heavy furniture that is not bolted down (cabinets, sala sets, aparadors)
  • Doorways — the doorway-as-safe-zone is a myth widely believed in the Philippines; it is false for modern construction and dangerous in older masonry buildings
  • Ceiling fans, light fixtures, and air conditioning units — all suspension points become projectile risks

Special indoor considerations for Iligan households:

  • Many families cook with LPG tanks stored indoors — do not light matches or candles after shaking until you have verified no gas is leaking (smell check, windows open)
  • Elderly family members and children should be assigned a default DROP position before any disaster — drill this with them so it becomes automatic
  • If a family member has a physical disability, designate their safe spot in advance and remove obstacles in that path

What To Do If You Are Outdoors During an Earthquake

If you are outside when the shaking starts, move immediately to open ground — away from buildings, walls, power lines, streetlights, and trees. Drop to your hands and knees, cover your head and neck, and hold until the shaking stops.

Iligan-specific outdoor hazards to know:

The city’s commercial district around Quezon Avenue and the Mahogany area has multi-story buildings with glass facades and exterior signage — these are high-risk zones during shaking. Move to the middle of the street if buildings line both sides, but watch for overhead power lines.

The areas around Maria Cristina Falls, Tinago Falls access routes, and the industrial corridor in Palao have steep terrain and concrete retaining walls — rockfall and wall collapse are serious risks. Never shelter against a retaining wall during an earthquake.

The SM City Iligan parking area and the open commercial zones near the rotunda are relatively safer outdoor positions, as they provide open clearance above.

For coastal barangays (Luinab, Kiwalan, Bonbonon, Dalipuga, Del Carmen, Tambacan): If you feel strong sustained shaking while near Iligan Bay or any river mouth, do not wait for sirens or official warnings. Move inland and uphill immediately after shaking stops. PHIVOLCS and the ICDRRMO use the rule: strong shaking near the coast = potential tsunami. Your evacuation window is measured in minutes, not hours. Pre-identified higher-elevation areas and established evacuation routes in your barangay should be your target.

Special Situations: Vehicles, Shopping Centers, and Public Spaces

If you are driving: Pull over safely away from overpasses, bridges, power lines, and buildings. Stop the vehicle, keep your seatbelt on, and wait inside until shaking stops. In Iligan, avoid stopping on the Agus River bridges or the Iligan-Cagayan de Oro highway bridges — these are high-risk positions. After shaking, check for road damage before proceeding, and avoid the coastal road in barangays near Iligan Bay until a tsunami threat has been officially cleared by PHIVOLCS or ICDRRMO.

If you are in a shopping mall: SM City Iligan and other commercial centers in the city have earthquake drill protocols. Drop in place, cover your head, and hold on. Do not rush toward exits during shaking — stairwells and exits become bottlenecks with falling debris. After shaking stops, follow staff instructions and exit in an orderly manner. Do not use elevators.

If you are in church: Iligan has several large churches including the Cathedral of Saint Michael. If you are seated, drop to the floor between pews and cover your head. Avoid the altar area if it has large statues or overhead light fixtures. Exit after shaking using side doors if available.

In schools: DepEd’s Brigada Eskwela and DRRM protocols require earthquake drills. If your child’s school has not conducted a drill recently, coordinate with the school’s DRRM focal person and with the OCD Region X for guidance on compliance.

Critical Things NOT To Do During an Earthquake

These are hard rules, not guidelines:

Do not run outside while shaking is active. The greatest single cause of earthquake injury in the Philippines is falling debris from buildings as people attempt to exit. The shaking phase is when walls, ceilings, and glass fail — you need to be low and covered, not mobile.

Do not stand in a doorway. This misconception is widespread in the Philippines. Doorways in modern concrete buildings offer no structural advantage and leave you exposed to door swings and collapsing frame elements.

Do not use elevators during or immediately after shaking. Power failure, shaft damage, and aftershocks can trap you between floors.

Do not light matches, candles, or cigarettes immediately after shaking until you have confirmed there is no LPG gas leak. Sniff for the mercaptan odor (rotten egg smell), open windows, and wait before using any open flame.

Do not clog phone lines with non-emergency calls. After a major event, network congestion is immediate. Keep lines clear for emergency calls to ICDRRMO hotline 811 or the national NDRRMC hotline 8911.

Do not go to coastal areas to watch the sea after a major earthquake. This is a documented behavior that has cost lives in past Philippine tsunamis. If the sea is receding rapidly, a wave is incoming.

Do not re-enter damaged buildings until cleared by structural engineers or the ICDRRMO. Aftershocks commonly occur within minutes to hours of the main event.

earthquake safety iligan: guide with emergency steps, aftershock tips, and local emergency contact numbers.
Earthquake safety Iligan: Guide with emergency steps, aftershock tips, and local emergency contact numbers.

After the Shaking Stops: Immediate Next Steps for Iligan Residents

Apply the 20-second rule. When shaking stops, do not immediately stand. Remain in your covered position for a slow count of 20. Aftershocks — sometimes strong enough to cause further collapse — often follow within seconds to minutes of the main event. Only after 20 seconds of stillness should you begin to move.

Assess your immediate surroundings before standing:

  • Check for structural cracks in walls or ceilings above you
  • Look for gas odor (LPG leak) — if present, exit immediately without using light switches
  • Check for fallen power lines outside windows before approaching exterior walls

Account for your household. Check family members one by one from where you are before moving. Do not shout across buildings — listen for responses and move methodically.

Evacuate damaged buildings using stairs only. Exit through the clearest path, avoiding debris piles. If in Iligan’s older multi-story buildings in the city center, treat structural cracks as a signal to evacuate and do not return until inspected.

For coastal barangay residents: After the 20-second pause, if you are in Luinab, Kiwalan, Bonbonon, Dalipuga, Del Carmen, or Tambacan, immediately move inland and uphill. Do not wait for official warnings. Move to your pre-assigned community evacuation area.

Monitor official channels:

Do not rely on social media rumors for safety decisions. Cross-check any report against PHIVOLCS bulletins or the ICDRRMO official page before acting on it.

Frequently Asked Questions

Q1: What is the safest place to be during an earthquake in Iligan City? Under a sturdy table or desk with your head covered, or against an interior load-bearing wall away from windows. In coastal barangays, your immediate priority after shaking is moving inland — the safest indoor position is only step one.

Q2: What are the 5 things not to do during an earthquake? Do not run outside during shaking, do not stand in a doorway, do not use elevators, do not light open flames until gas leaks are ruled out, and do not use phone lines for non-emergencies.

Q3: What is the best thing to do during an earthquake? Drop, Cover, and Hold On immediately — wherever you are. No decision-making needed. This single action, done fast, saves lives.

Q4: What is the 20-second rule for earthquakes? After shaking stops, remain in your covered position and count slowly to 20 before moving. Aftershocks can follow within seconds, and a partial collapse is most dangerous to someone who is standing and moving.

Q5: Should I go outside during an earthquake in Iligan? No — not while shaking is active. The risk of falling debris from Iligan’s concrete and masonry buildings is highest during the shaking phase. Exit only after shaking has completely stopped and you have assessed your surroundings.

Q6: Is it safe to stay in a doorway during an earthquake? No. This is a common misconception in the Philippines. Doorways in modern buildings provide no structural advantage and leave you exposed to door movement and frame failure. Get under a table or against an interior wall instead.

Q7: What should I do if an earthquake happens while I am sleeping? Stay in bed, turn face-down, and cover your head and neck with your pillow. If a heavy light fixture is directly above your bed, roll off and drop beside the bed with head covered. Do not run through a dark house during shaking.

Q8: How do I protect my family during an earthquake in Iligan? Assign every household member a default drop position in each room. Drill Drop, Cover, Hold On with children regularly. Know your barangay’s evacuation route. Save the ICDRRMO hotline (811) in every phone in the household. For coastal barangays — know your inland evacuation destination now, before the next earthquake.

Verified agency contacts as of June 2026. Always confirm current numbers directly with the Iligan City DRRMO or OCD Region X.

Sources & Verified Links:

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