Understand how to prepare for, survive, and recover from tropical cyclones and hurricanes — including when to evacuate and how to shelter safely.
Tropical cyclones — known as hurricanes in the Atlantic and typhoons in the Pacific — are among the most destructive forces in nature. A major cyclone can sustain wind speeds exceeding 250 km/h (155 mph) and generate a storm surge that raises sea levels by 5 metres (16 feet) or more, flooding entire coastal communities in minutes. Unlike earthquakes, cyclones come with advance warning — days, not seconds. That warning time is your greatest advantage, and using it wisely makes the difference between life and death.
Globally, tropical storms cause tens of thousands of deaths per year. The majority of cyclone fatalities are caused not by wind, but by storm surge and flooding — inland communities far from the coast can be devastated by rainfall flooding that persists for days after landfall.
| Category | Sustained Wind Speed | Expected Damage |
|---|---|---|
| 1 | 119–153 km/h (74–95 mph) | Damage to trees, minor roof/gutter damage |
| 2 | 154–177 km/h (96–110 mph) | Major tree damage, some structural damage |
| 3 | 178–209 km/h (111–129 mph) | Significant structural damage, power outages |
| 4 | 210–251 km/h (130–156 mph) | Severe structural damage, widespread devastation |
| 5 | 252+ km/h (157+ mph) | Catastrophic destruction — survivable only in well-constructed shelter |
⚠️ Category is not the only measure of danger. A Category 1 storm with slow movement can dump enormous rainfall and cause catastrophic flooding. Storm surge from any major cyclone can be lethal regardless of wind speed. Always follow official guidance for your specific location.
| Item | Quantity |
|---|---|
| Water | 4 litres (1 gallon) per person per day — minimum 7-day supply |
| Non-perishable food | 7-day supply (no cooking required if possible) |
| Manual can opener | 1 |
| Torches + batteries | Multiple, or hand-crank/solar |
| Battery-powered or hand-crank radio | Critical for updates during power loss |
| First aid kit | With any prescription medications (30-day supply) |
| Waterproof document bag | ID, insurance documents, bank information |
| Cash | ATMs and card machines will be down |
| Portable phone charger | Multiple — fully charged |
| Fuel | Fill your vehicle tank before the storm arrives |
| Sandbags | For flooding-prone entries |
If evacuation is not possible or authorities have not ordered it, shelter in a well-built structure:
⚠️ The eye of a cyclone can bring a sudden eerie calm — clear skies, no wind, silence. This is NOT the end of the storm. The most dangerous half of the storm (the eyewall on the other side) is about to arrive. Stay sheltered. The calm can last 20 minutes to an hour.
| Issue | Action |
|---|---|
| Gas smell | Do not use any switches, open windows, leave building, call gas company |
| Electrical damage | Do not turn power on until inspected; do not step in standing water near electrical equipment |
| Water supply | Do not use tap water until authorities confirm it is safe; boil or purify |
| Sewage backup | Do not use toilets if sewage system is damaged |
⚠️ Generator-related carbon monoxide poisoning is one of the leading causes of post-hurricane death. Generators, gas stoves, charcoal grills, and camp stoves must NEVER be used indoors or in garages — even with windows open. Place generators at least 6 metres (20 feet) from the building with exhaust pointing away.
A severe cyclone is a traumatic experience. Anxiety, sleeplessness, irritability, and grief are normal responses. Prioritise:
| Situation | Action |
|---|---|
| Storm forecast 72+ hours away | Prepare supplies, check evacuation zone, secure outdoor items |
| Storm 24 hours away | Board windows, fill water containers, charge devices, consider evacuating |
| Evacuation ordered for your zone | Leave immediately — take go-bag, documents, pets |
| Sheltering in place | Interior lowest-floor room, away from windows |
| Calm period during storm | Stay sheltered — you are in the eye, the storm continues |
| Downed power line after storm | Stay well away — treat as live |
| Generator use | Outdoors only, at least 6 m (20 ft) from building |
| Tap water after storm | Boil or purify until authorities confirm safe |
This guide is for general preparedness education. In an emergency, always follow the instructions of local emergency services. Cyclone tracks and intensity are uncertain — always rely on official meteorological guidance for your specific location.
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