Wet Season Flood and Cyclone Car Checks in Townsville

This guide is for Townsville and Burdekin drivers getting ready for the wet season. It covers the electrical checks worth doing before the storms start, how to plan your vehicle around cyclones and floods, and what to do if your car has been in floodwater.

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Why the wet season matters for your car

The Bureau of Meteorology describes Townsville's wet season as running from November to April, with the heaviest monsoon rain usually from late December to early April. Storms often start in late October or November. The bureau says severe tropical cyclones (category 3 or stronger) affect Townsville on average about once every 20 years. They are not common, but they do happen, and monsoon troughs can bring widespread flooding rain. Townsville's February 2019 flood is a recent reminder. The BoM Townsville climate page has more background.

For your car, the wet season means downpours that test wipers and lights, humidity that finds its way into connectors, and the chance that you'll need to leave in a hurry. Getting the electrics sorted in October is far easier than in the middle of a warning.

Electrical checks to do before November

Work through these while the weather is still dry:

• Battery: have it load tested. A weak battery is the last thing you want when you need to leave quickly.
• Headlights, tail lights, brake lights and indicators: check every globe works and the lenses aren't fogged with moisture.
• Wipers: check the motor runs on every speed and the washer pump works. Replace perished blades.
• Demister and air conditioning: a working demister keeps the windscreen clear in heavy rain.
• Hazard lights: test them. You'll want them if you have to stop on a road in poor visibility.
• Fuses: carry a few spares of the right ratings and know where the fuse box is.
• A portable jump starter and a 12V phone charger, both fully charged.

Planning your car around a cyclone

Townsville City Council asks residents to know their local risks and keep an emergency plan and kit ready. Its disaster management pages include storm tide evacuation zones, so check which zone your home is in. If you live near the coast, such as around Bushland Beach or South Townsville, you may need to move your car well before the weather arrives.

When a cyclone watch or warning is issued, keep the fuel tank topped up and the car ready to go. If you're staying put, park in a garage if you have one, or away from trees, power lines and anything that could blow loose. Pack your emergency kit in a way you can quickly load into the vehicle.

If you have a second vehicle, a boat or a caravan, include it in your plan too. Decide early where each one will go, because moving several vehicles at the last minute in wind and rain is stressful and can be unsafe.

Floodwater and king tides

The Queensland Government message is simple: if it's flooded, forget it. Water hides washed-out road surfaces and debris, and moving water can push a car off the road or sweep it away. Road closures are put in place for safety, and the Department of Transport and Main Roads warns that vehicles ignoring closed roads are likely to have insurance claims refused. Rules and penalties can change, so check current advice before you travel.

Check QLDTraffic or call 13 19 40 for road closures and conditions on major roads. Flood resilience on the Bruce Highway south of town has improved since the Haughton River Floodplain Upgrade near Giru was completed in 2022, but other roads can still go under.

Townsville's biggest king tides usually fall in January and February. The council advises against driving through saltwater and against parking on the street when tidal flooding is expected. Salt is very hard on wiring, connectors and body sensors, so treat salty water as a bigger risk than rain.

If your car has been in floodwater

Don't try to start it. If water has reached the engine intake, cranking can damage the engine. If it has reached the wiring, connectors or control modules, power can cause short circuits. Disconnect the battery if it's safe to do so and you know how, and contact your insurer before anything else is done.

Water damage to electrics often doesn't show straight away. Corrosion can build inside connectors and modules over weeks, leading to warning lights, dead accessories, intermittent faults or a battery that keeps going flat. Saltwater damage is usually worse than freshwater damage. A flooded car should be assessed by a professional before it goes back on the road.

Signs of hidden water damage

If you're buying a used car after a wet season, or your own car got wet, look out for:

• A musty smell, damp carpet or a water line inside the doors or boot.
• Silt or mud under the seats, in the spare wheel well or around the fuse box.
• Fogging inside headlights and tail lights that doesn't clear.
• Warning lights that come and go, or power windows and locks acting oddly.
• Green or white corrosion on connectors and earth points.

Help during and after a storm

For storm or flood help that isn't life-threatening, such as a damaged roof or flooding in your home, call the Queensland SES on 132 500. If anyone's life is at risk, call Triple Zero (000). The SES assistance page explains what the SES can help with.

Once the roads are safe, an auto electrician can check a car that has been sitting through the storm, test the battery and look for moisture in the electrics. If you have trouble starting after a wet spell, our guide on battery warning lights explains what the charging light means.

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Questions Townsville drivers ask

Should I start my car after it's been in floodwater?

No. If water has reached the engine or the electrics, starting it can cause serious engine damage or short circuits. Leave it off, disconnect the battery only if it's safe and you know how, and call your insurer. Have the vehicle inspected by a professional before you try to drive it, as water damage often isn't obvious at first.

Where can I check road closures around Townsville during the wet season?

QLDTraffic, run by the Queensland Government, lists road closures and conditions for major roads. You can use the website or app, or call 13 19 40. Townsville City Council's disaster dashboard is the main local source during an event. Conditions can change quickly, so check again just before you leave and obey all closure signs.

Is saltwater worse than rainwater for car electrics?

Yes. Salt makes water conduct electricity much better and speeds up corrosion. After a king tide or storm tide, corrosion can keep spreading through connectors and wiring long after the car dries out. Avoid driving through saltwater where you can, and if your car has been sitting in it, get it checked before relying on it.

When should I get my car ready for the wet season in Townsville?

October is a good target. Storms often start in late October or November, and the wet season runs through to April. Testing the battery, checking lights and wipers, and packing a charged jump starter before then means you're ready if a warning is issued. It's also a good time to check your storm tide evacuation zone.

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