If a tropical cyclone is threatening your district in Madagascar, follow the latest cyclone bulletin from Météo Madagascar and the instructions of BNGRC and your local authorities. If your home is in a low coastal area, floodplain or weak building and you are told to evacuate, leave before wind and water close the route. Do not wait until the cyclone’s eye is nearby or a river reaches your doorway. If already in a recognised safe building during severe wind, stay away from windows and vulnerable roofs and avoid going outside during a temporary lull.
Madagascar’s official cyclone system uses green, yellow, red and blue alerts. Météo Madagascar’s cyclone guidance explains that green means prepare and watch conditions, yellow means the threat is closer and urgent protective preparations or relocation may be needed, red means dangerous conditions are imminent or occurring and people must follow local instructions and remain safely sheltered, while blue means the cyclone is moving away or weakening but rain, flooding and damaged infrastructure can still be dangerous. These labels are not a fixed promise of how many hours your own village has.
Quick answer: A cyclone emergency may progress from a changing track forecast, through community warnings, early evacuation, damaging wind, heavy rain, coastal surge and flooding, followed by disrupted roads, unsafe water and recovery. Its strongest hazards may occur in different places and at different times. Some communities experience major flooding without the most severe winds. A reduced alert colour does not by itself make a flooded road, bridge or damaged house safe.
First ten actions: immediate cyclone survival checklist
- Check the newest Météo Madagascar alert for your district, including the issue time, colour and actual instructions.
- Follow local BNGRC, district and commune evacuation directions immediately; do not use an old alert screenshot as a substitute.
- Leave early from low coastal ground, river floodplains, steep unstable slopes and weak structures when authorities advise it.
- Move to a recognised safe shelter or destination using an approved route that avoids flooded bridges and river channels.
- Take medicines, identification, drinking water, a flashlight and supplies for children and people needing assistance if already prepared.
- Stay inside a sound building during violent wind, away from glass and loose roofing, following shelter staff instructions.
- Do not go outside during an apparently calm eye or a short rain lull. The wind can return rapidly.
- Never walk or drive through floodwater, even if other people are doing so.
- After the storm, avoid fallen electrical wires, unstable trees, unsafe buildings, and contaminated drinking water.
- Wait for official clearance before returning home, and confirm local emergency contacts before communications fail.
Stage 1 — The forecast begins: what a cyclone in Madagascar actually means
Madagascar is an island in the southwest Indian Ocean that can be affected by tropical cyclones, severe tropical storms, monsoon rainfall and associated flooding. Local impacts depend on the storm’s path, wind field, rainfall, coastal shape, rivers, terrain and housing conditions.
The Direction Générale de la Météorologie issues national forecasts and cyclone bulletins. An early model track is uncertain and may change. It does not mean every district inside a wide region will have identical impacts, nor that all places outside the track are safe from heavy rain.
For the 2026–2027 season, households should check the latest official bulletin rather than make decisions from an earlier cyclone’s path. As of early November 2026, the Météo Madagascar cyclone page displays current status and the preparedness system; status can change after a page is viewed.
The most useful preparation is identifying the actual place where you live or are visiting: region, district, commune, neighbourhood or village. Knowing that level of location makes warnings actionable and helps rescuers respond when a road or bridge becomes blocked.
Stage 2 — Green alert: prepare while movement is still possible
A **green cyclone alert (*alerte verte*)** indicates a cyclone exists in the broader area and a threat may develop, although the risk to a particular locality is not yet precise. Météo Madagascar describes this as the stage for close monitoring and practical preparation.
Check forecasts on official radio, television and meteorological channels, and identify the nearest recognised safe destination. Where local authorities maintain safe-shelter lists, check the actual facility and transport route rather than assume the nearest school is suitable.
Before strong winds, secure loose objects only while it is safe to work outdoors. Protect medicines and identity documents from rain. Charge a phone, prepare a battery radio or light and arrange enough safe drinking water and food that requires little cooking. For a household with an infant, bring feeding and hygiene supplies appropriate to their needs.
Consider the person who cannot walk far or depends on electricity-powered medical equipment. Early planning can make the difference between a safe organised departure and an emergency rescue after roads fail. Agree on a family meeting point and a trusted out-of-area contact.
Stage 3 — Yellow alert: the choice to leave becomes urgent
A **yellow alert (*alerte jaune*)** means the cyclone threatens the locality more directly, though the most dangerous conditions may not have arrived. The official guidance instructs residents to remain informed, secure supplies, discontinue maritime activities and move away from exposed waterfront or unsafe housing when appropriate.
At this stage, listen carefully for instructions issued by the municipality, district, BNGRC or recognised community leaders. Some areas may need pre-emptive evacuation, particularly homes beside rivers, on very low coastlines or in buildings unlikely to withstand high wind.
If told to leave, do it while the route is dry and passable. Do not delay for furniture, construction materials, a boat or animals that are not already safely prepared for movement. Keep emergency routes open for rescue and official transport.
Fishing communities should follow local marine restrictions. Do not take a pirogue out to sea after an official warning or attempt to bring a vessel back through dangerous surf once conditions deteriorate. Essential gear should be secured in advance, not in the last hours of the storm.
A yellow alert is not a guarantee that every place has 24 hours to act. Local effects may arrive earlier than the theoretical warning window.
Stage 4 — Red alert: stay sheltered unless responders instruct otherwise
A **red alert (*alerte rouge*)** indicates the threat is imminent or underway. Météo Madagascar’s official action table instructs people to stop activities, avoid circulation and stay inside a safe building, while listening to official communications.
If you have already evacuated to a designated shelter, remain there. If you are in another substantial building and authorities have instructed you to shelter, use the safer interior part, away from windows and vulnerable roofing. Do not crowd exterior doors to watch the weather.
This does not mean an unsafe dwelling magically becomes safe at red alert. It means that movement during violent wind or floodwater can be extremely dangerous. If the building is failing, flooding rapidly or otherwise immediately life-threatening, contact responders and follow their situation-specific instructions. A general article cannot identify a safe last-minute route when roads have already closed.
Keep a battery-powered source for official information. Mobile networks may become congested or fail; do not spend essential battery on repeated uploads of weather videos.
Stage 5 — The strongest wind: debris and building failure
Cyclone winds can lift loose roofing sheets, blow down signs and trees, damage doors and windows, and carry debris through the air. A storm can be extremely noisy, but noise alone cannot tell a household the wind speed or when it will end.
Stay away from windows, loose ceilings and the most vulnerable exterior walls. Do not attempt to repair a roof, tie down an object or stand outside to protect a vehicle during peak wind. Flying metal and falling tree limbs can cause severe injuries.
If a shelter has a supervisor, follow their instructions about moving occupants within the building. Keep corridors clear for emergency access and support people who have difficulty moving. A crowded shelter can become unsafe if exits are blocked by luggage or debris.
If you observe major structural damage or smell gas or fuel, tell the shelter lead or emergency authority immediately. Do not operate wet electrical switches or use an open flame where there may be a leak.
Stage 6 — The eye or a lull: why calm is not the all-clear
Some tropical cyclones have an eye or relatively calm centre. Wind can decrease sharply and the sky may brighten when it passes over an area. The surrounding violent wind can then return from another direction.
Météo Madagascar specifically warns residents under red alert to beware of the apparent calm as the cyclone’s eye passes. Do not go outside to inspect a house, collect roof sheets or photograph the sky during this lull.
Even without an eye, gaps between rainbands can produce temporary breaks in rain and wind. These are not official proof that the danger is over. Stay sheltered until authorities announce the appropriate change in instructions.
Cyclones can weaken or shift their path, so communities farther inland may encounter intense rain after the coast’s most dangerous wind has already passed. Continue to follow warnings for your district, not only the appearance of local clouds.
Stage 7 — Storm surge on the coast: rising sea water is not ordinary rain
Cyclone winds and low pressure can raise coastal sea levels, while large waves and tides may add to flooding. Low coastal settlements, lagoons and estuaries may experience inundation even when the heaviest rain is elsewhere.
Coastal evacuation should happen before the surge arrives. Do not approach the beach to watch seawater rise, cross a road covered in surf or assume that a higher floor in a weak coastal house is equivalent to an approved evacuation shelter.
A person already in a safe inland shelter should stay there until the local authority advises that the coastal route is usable. The first visible coastal flooding is not necessarily the maximum level. Water can damage roads, undermine walls and obstruct return.
Fishing ports and waterfront businesses should avoid reopening until the harbour and route have been assessed. A boat may be replaceable, but a person trapped by surging seawater may not be reachable by rescuers.
Stage 8 — Inland floods and landslides: the cyclone moves away but rivers keep rising
The cyclone may bring heavy rain over inland catchments, mountains or steep slopes. Water can continue moving downstream after rainfall eases in a town. Rivers and drainage channels can overflow, while saturated hillsides can produce landslides or rockfall.
Do not cross a flooded river, low bridge or highway section. Water may hide missing road surface, strong current and debris. A motorbike or large vehicle cannot make a water crossing reliably safe. Turn around rather than test the depth.
Where a hillside is unstable, avoid parking below a fresh rockfall or cracked road cutting. An evacuation route may need to change if rain triggers additional slope hazards. Follow road officials, police and disaster-response staff rather than a normal navigation route.
When staying indoors, do not enter floodwater to disconnect electricity or retrieve food from a lower room. If your present shelter is becoming unsafe, contact local responders and use the safest authorised alternative.
Stage 9 — Blue alert: the cyclone weakens but dangers continue
The **blue alert (*alerte bleue*) means the cyclone is moving away or filling/weakening. It is a transition toward recovery, not a guarantee that every area is safe**. The official guidance notes continuing rain, floods, rough seas and strong wind may remain possible.
Stay informed, obey remaining travel restrictions and wait for clearance to leave official shelters. The local authority may allow access to one district while bridges remain closed elsewhere. Another rainy period can add flooding to already saturated ground.
Do not stand beneath damaged trees or touch downed power lines. Stay away from crumbling walls, blocked culverts and washed-out road shoulders. Help rescue vehicles reach the area by keeping emergency routes clear.
Météo Madagascar advises people in the blue stage to continue following radio announcements, wait for official lifting of alerts and treat water carefully. A lighter sky or a blue notice is not a reason to return to a collapsed home.
Stage 10 — Water, food and sanitation in the first days afterward
Floodwater can contaminate drinking-water sources, food, kitchens, toilets and household storage. Use approved water sources and follow instructions from public-health and water-service authorities. Boiling can kill many germs but does not remove all chemical or fuel contamination. If a source is subject to a do-not-drink warning, find an alternative.
Protect young children from contaminated water and muddy debris. Handwashing with safe water and soap can reduce infection risk. Seek professional care for significant wounds, serious diarrhoea, fever, breathing difficulties or dehydration.
Do not eat food that was submerged in floodwater. Remove damaged food safely according to health guidance. Some homes may require structural, electrical or water-system assessment before cooking or normal living can resume.
Do not use generators, kerosene burners or charcoal braziers in an enclosed sleeping area. The danger from invisible carbon monoxide can be severe even when people are simply trying to replace lost electricity.
Stage 11 — Emergency contacts: what numbers should households save?
Emergency contact systems in Madagascar vary by service and location. This is an area where sources published for travellers do not always agree on a single ambulance number, and coverage may be limited outside major towns. A reader should therefore verify the nearest police, medical, fire and commune contacts before the cyclone.
The United Kingdom’s official Madagascar emergency guide lists 17 from a landline or 117 from a mobile for police/ambulance emergency contact, and 18 or 118 from a mobile for fire. Singapore’s Ministry of Foreign Affairs Madagascar advisory also lists 117 for police/medical emergencies and 118 for fire.
The United States Department of State separately lists 119 for police, 118 for fire and 124 for ambulance, with additional local telephone numbers. These differences may reflect service-specific contact arrangements. Do not assume every listed number is operational in your district or during a cyclone.
Before a warning is issued, record the phone number for the nearest health facility, police post, local disaster official, shelter coordinator and a trusted person in a safer area. During a dangerous event, use whichever locally verified emergency channel functions and follow the nearest official responder’s instructions.
Stage 12 — Emergency shelters, families and visitors
Families may reach a recognised shelter with only a small bag. Basic needs include safe water, food, toilets, appropriate clothing, medicine, lighting and a way to contact relatives. Staff may need to register household members and arrange support for people with special medical or mobility needs.
Children should remain with known caregivers. Do not publish their personal location or sensitive health details publicly when asking for help. Seek recognised reunification or local community channels instead.
Tourists should know their district and accommodation address and ask local staff about official radio and alerts. A hotel in one town may remain open while the road to the airport is blocked. Flight reservations do not overrule evacuation or transport restrictions.
Visitors should avoid booking a boat or road trip during an active cyclone alert without confirming that the service is legally operating and safe. If stranded, preserve mobile battery and inform your travel operator or appropriate consular service once urgent local safety arrangements are secured.
Stage 13 — Agriculture, fishing and the economy after the cyclone
A cyclone can damage crops, livestock shelters, boats, fishing gear, market routes and water infrastructure. The household’s food security can be threatened even if the home survives the winds. Some areas may face longer recovery because roads and bridges isolate them.
Do not move livestock through flooded roads or unsafe channels. Ask local veterinary or agricultural extension services about safe water and feed, animal health and reasonable recovery steps. A farmer should not apply a generic fertiliser or chemical treatment to a flood-damaged field based only on online advice.
Fishermen should wait for maritime clearance and inspect vessels, engines, harbours and weather conditions before returning to the water. Rough seas can persist after the strongest winds have weakened.
Recovery assistance, if available, should be verified through official district, BNGRC or recognised humanitarian channels. Be cautious about people demanding payment to guarantee cash relief or urgent access permits.
Stage 14 — Re-entry and rebuilding: when the visible storm is gone
Do not enter a seriously damaged building until authorised and assessed as safe. Roofs, walls, ceilings and trees can remain unstable. Wiring may still be dangerous, especially where water entered the house. Use qualified professionals for major structural and electrical repairs.
Record losses when safe for insurers, property owners or recognised relief programmes. Avoid moving heavy roofing or clearing an unstable tree without suitable equipment and professional help.
The most useful recovery review asks whether the household reached its safe destination early enough, whether alerts were heard, whether the accessible route was usable and whether water and medicine lasted through the disruption.
A future cyclone may not follow the same track or produce the same wind or water pattern. Plans should be updated from current official guidance rather than simply copied from the last storm.
Which Malagasy authorities provide the information?
Météo Madagascar / Direction Générale de la Météorologie: cyclone tracking, green/yellow/red/blue alerts, forecasts and notices about rain, wind, swell and flooding.
BNGRC — Bureau National de Gestion des Risques et des Catastrophes: national disaster management and coordination with regional and local authorities.
Regional, district and commune authorities: local evacuations, recognised shelters, road access and community communications.
Police, firefighters, healthcare workers and other recognised responders: emergency intervention, search and rescue, medical care and immediate access restrictions.
A weather alert is an early-warning signal; a local evacuation order is an actionable direction; and a blue transition is not permission to cross a damaged river. Read each source for its proper purpose.
Example: a family on an eastern coastal district
A family near Madagascar’s eastern coast hears that a cyclone may approach. During the green stage they gather medicines, safe drinking water and papers. The yellow notice identifies greater local risk, and commune officials instruct exposed low-lying households to move to an approved shelter. The family leaves while the road is passable.
During the red stage the household remains indoors, away from windows. A brief calm does not cause them to return home. When the alert changes to blue, they still wait because river water is high and a bridge is closed. This is a fictional sequence, not a report that a particular district is under cyclone alert today.
Eight mistakes to avoid
- “Green means the storm will definitely miss us.” It means prepare and monitor uncertainty.
- “Yellow means I can delay leaving until wind becomes strong.” Early movement may be needed for vulnerable locations.
- “Red means everyone should start driving immediately.” During dangerous conditions, follow the official shelter or evacuation instruction; late travel may be deadly.
- “A calm eye means the cyclone ended.” Severe wind may return rapidly.
- “The sea is only dangerous at the beach.” Storm surge can affect estuaries and low coastal roads.
- “Blue means no more danger.” Rain, floodwater, damaged trees and wires may remain.
- “A vehicle can cross if water looks shallow.” Floodwater hides current and road failures.
- “An international emergency list guarantees the number will work locally.” Verify local contacts before the crisis.
Madagascar cyclone preparedness checklist
- Save Météo Madagascar cyclone alerts and weather vigilance notices.
- Understand green, yellow, red and blue in the context of the complete official message.
- Ask your commune and local disaster officials about evacuation routes and recognised shelters.
- Prepare medicine, identification, clean water, nonperishable food, lights, phone power and dependent-care supplies.
- Arrange additional assistance for people with disabilities, older adults, pregnant people and children.
- Verify police, ambulance, fire and hospital phone contacts that operate in the district.
- Protect boats, livestock and food stocks before dangerous weather, not during the peak.
- Avoid blocked bridges, floodwater, damaged trees and exposed electrical systems.
- Return only after local authorisation and water or building safety checks.
Frequently asked questions
What do Madagascar’s cyclone warning colours mean?
Broadly, green is preparation, yellow is a nearer threat requiring urgent precautions, red is imminent or ongoing danger requiring safe shelter and strict local instructions, and blue is a weakening or departing storm with hazards that may remain.
Is blue the official all-clear to travel?
No. The cyclone may be moving away while floods, rough seas, rain or road damage persist. Wait for local restrictions to be lifted.
Should I evacuate once red is announced?
Evacuation is often safer before the strongest conditions. Under red, travel may be extremely dangerous. Follow the local authority’s actual evacuation or shelter instructions for your precise location.
Can a cyclone cause flooding after it passes?
Yes. Rainfall in upstream catchments can continue moving downstream after winds weaken, while damaged drainage and bridges may remain unsafe.
What is the emergency number in Madagascar?
Some official foreign-government guides list 117 for mobile police/medical emergencies and 118 for fire; other official guides list additional service-specific numbers such as 119 for police and 124 for ambulance. Verify the usable number with local services in your district, as access varies.
Why should a family avoid collecting belongings during an evacuation?
The time needed to retrieve furniture or property can leave the household trapped by wind, water or blocked roads. Human safety and medical essentials come first.
Official sources and related eduKate guides
- Météo Madagascar — Cyclone Warning Stages: green, yellow, red and blue stages with protective actions.
- Météo Madagascar — Weather Vigilance: additional heavy rain, wind, swell and flood warnings.
- Météo Madagascar — Meteorological Portal: latest official forecasts and seasonal information.
- BNGRC — National Disaster Risk Management Agency: national disaster coordination and notices.
- UK Government — Madagascar Emergency Numbers: service contacts and guidance for travellers.
- Singapore MFA — Madagascar Advisory and Emergency Contacts: cyclone-season precautions and local emergency numbers.
- U.S. State Department — Madagascar Emergency Services: additional service-specific emergency contacts and limits of access.
- eduKateSG — Tropical Cyclone in Mozambique: a related hazard on the opposite side of the Mozambique Channel, with a different national response system.
- eduKateSG — Typhoon in the Philippines: how wind, storm surge and rivers interact in another tropical-cyclone region.
- eduKateSG — Flood in Bangladesh: why the safe-water and road risks continue after strong rain.
Reader note — checked 6 November 2026: This is an educational guide, not a live cyclone notice, current shelter location or guaranteed emergency dispatch directory. For immediate danger, follow the newest Météo Madagascar, BNGRC and local authority instructions.