Atlantic hurricane season runs from June 1 to November 30 (National Hurricane Center climatology), and in South Florida an electric vehicle changes the storm plan in two ways. The car is both your evacuation vehicle and a large lithium-ion battery that can become a fire hazard if salt water gets into it. And the charger on your garage wall or carport post is a 240-volt circuit that has to ride out wind, water and power surges like everything else on the house.
This guide walks through the season in order: what to sort out before June, what to do when a storm is in the forecast, what to do while it passes, and what to check before you plug back in. It is written by a licensed electrical contractor, so the electrical side gets the most detail. For the vehicle itself, your automaker's instructions come first, and we say so wherever that matters.
Before the season: the dry-weather checklist
The best time to prepare is a calm week in May, when an electrician is easy to book and nobody is rushing. Four things are worth checking.
- Where the charger sits relative to water. If your garage or driveway has flooded before, or the home is in a flood zone, the height of the charger and its receptacle matters. Our guide to mounting an EV charger in a flood zone covers the options.
- Surge protection at the panel. Storms bring utility switching and grid faults as well as lightning. Whole-home surge protection at the service is the first layer, and the surge protection for EV chargers post explains why it is worth doing before the charger, not after it fails.
- The condition of the circuit. A loose connection, a scorched plug or a breaker that trips now will not get better during a storm. If you have noticed any of this, read why an EV charger keeps tripping the breaker and get it looked at.
- A backup power plan that does not involve the car by accident. Decide in advance whether you will rely on a standby generator, a portable generator with a proper transfer switch, or nothing at all. Our storm readiness and backup power page sets out the choices. If you are curious about using the EV itself, see EV backup power (V2H) in Florida; it only works with specific vehicles and equipment.
It is also worth finding your owner's manual section on flooding and water, saving your automaker's roadside assistance number in your phone, and knowing your evacuation zone. None of that needs an electrician, but it is much harder to do with no power and one bar of signal.
When a storm is in the forecast
Charge early, not at the last minute
FPL's storm guidance for EV drivers tells owners to charge before a storm arrives and to plan a route with public charging along the way (FPL electric vehicle storm safety). The practical reason is simple: once an evacuation order is issued, every public charger on the route is busy, and after landfall many will have no power. FPL notes that public chargers do not have backup power. How full to charge is a question for your vehicle's owner's manual or app, which may give different guidance for everyday charging and for long trips. Follow what your automaker says for your model.
Plan where the car will be
FPL suggests parking in a safe, elevated area away from trees and poles, and inside a garage or carport if possible. That advice is about wind and falling debris. Water is a separate question. If your home sits in a storm surge area, a garage at ground level is exactly where salt water will go, and NHTSA warns that EV and hybrid batteries are highly corrosive and should not be exposed to standing water (NHTSA hurricane and flood-damaged vehicles). If you are evacuating out of a surge zone, the car is usually safest leaving with you.
Prepare the charger
If there is any chance water will reach the charger, the receptacle or the panel, the time to switch the charger's breaker off is before the storm, while the floor is dry. A labeled breaker makes this a ten-second job; if your panel directory is a guess, fix that in May. Never reach into a panel or touch a breaker while standing in water.
During the storm
FPL's guidance is to avoid charging during a storm and to unplug the charging handle from the car (FPL storm safety). Surges and outages are common while a storm passes, and there is nothing to gain from charging through them. If the power goes out and later comes back while the storm is still passing, leave the charger alone until conditions settle and you can look at it in daylight.
Do not run a portable generator in the garage to keep the car or the house going. Generators belong outside, well away from doors and windows, and they must never be connected to the house through a receptacle. Our post on charging an EV from a generator explains what does and does not work.
After the storm: before you plug back in
The first question is whether the car or the charger was in water. FPL tells drivers that if they suspect flood damage, they should not plug into a charger or drive the vehicle, and should not touch any electrical equipment, including an EV charger, that is in floodwater (FPL).
If the vehicle was flooded, especially by salt water, treat it as a fire risk. NHTSA advises not to park a flood-damaged lithium-ion vehicle in a garage or within 50 feet of a house, structure, other vehicle or combustibles (NHTSA guidance). Florida's State Fire Marshal says never to charge a battery that has been submerged, to move away and call 911 if you see smoke or hear popping or hissing, and to contact the manufacturer for handling (State Fire Marshal lithium-ion battery guidance). The next post, what to do with a flooded EV or charger, goes through this in detail.
If the car stayed dry but the charger, receptacle or panel got wet, keep the charger breaker off and have an electrician inspect the equipment before it is used again. Also look at the outside of the house. On a typical property the mast, weatherhead and meter enclosure belong to the owner, and if the storm damaged them the utility may not reconnect until a licensed electrician repairs them. The storm readiness page covers that boundary.
When power comes back and nothing was flooded, check the charger's app or indicator lights for faults, confirm your charging schedule survived the outage, and start one charging session while you are nearby. If the charger will not start, our troubleshooting checklist has the safe steps.
The season at a glance
| When | Vehicle | Charger and electrical |
|---|---|---|
| Before June 1 | Read the manual's flood section; save roadside number; know your evacuation zone | Check charger height, surge protection, circuit condition; label the breaker |
| Storm forecast | Charge early; charge level per automaker; plan route and parking | Switch the charger breaker off if water could reach it, while dry |
| During | Do not charge; unplug | Leave it alone; no generator indoors or backfeeding |
| After | If flooded: do not drive or charge; keep 50 feet from structures; call manufacturer | If wet: keep breaker off; have it inspected before use |
Questions homeowners ask
Should I charge to 100% before a hurricane?
Charge early so you are not relying on crowded public chargers, but take the target level from your automaker's manual or app. Some manufacturers give different guidance for daily charging and for trips, and that is the source to follow for your model.
Can I leave the car plugged in during the storm?
FPL's storm guidance says to avoid charging during a storm and to unplug the handle from the vehicle. If the charger could flood, turn its breaker off beforehand while everything is dry.
Is the garage the safest place for my EV?
For wind, often yes. For storm surge, no. A ground-level garage in a surge area is where salt water collects, and NHTSA advises keeping a flood-damaged EV out of garages and at least 50 feet from structures. If you are evacuating from a surge zone, take the car with you if you can.
Do I need to do anything to the charger when power is restored?
If it stayed dry, check the app or lights for faults and confirm the schedule, then start a session while you are nearby. If it got wet, or you smell burning, see heat or discoloration, leave the breaker off and call an electrician.
Can my EV power the house during an outage?
Only with a vehicle and equipment built for it, including a device that isolates the house from the grid. Running an extension cord from the car into the house wiring is dangerous. See our V2H guide.
For the rest of the guide, including installation and panel questions, start at the Florida Home EV Charging Guide or our EV charger installation page. KRW Electric (EC13012832) handles EV circuits, surge protection and post-storm electrical repairs across Miami-Dade, Broward and Palm Beach. If you want your charger and panel checked before the season, get in touch or call (305) 359-7312.
Reviewed by Kyle White, KRW Electric Company LLC — licensed electrical contractor EC13012832.
