The most important one to remember is ebikes. Not because they're more dangerous, but because they are not something people actively think about as a danger they need to mitigate. My friend's neigh's house survive both hurricanes with flooding... and then almost lost the home to fire when a ebike in the garage caught fire because it had gotten wet. They were lucky that they have a dual smoke detector in their garage. Most people don't. (If you have a garage, it's worth the investment in one, especially if it's an attached garage. Combustion engines also cause fires, which is why insurance is significantly higher on a home with an attached vs. separate garage. The ebikes are a quirky hidden danger because bikes just aren't things we tend to worry about after a storm. If you get water damage, photograph them for insurance claims and get them away from your home.
Both electric car batteries and standard car batteries are explosion/fire risks if they have had contact with salt water. That's why you evacuate with your vehicles if you might get feet of flooding from storm surge. The car will be toast if left, and if someone tries to start it vs. towing it to the junkyard, the car can catch fire. It's scary, especially in storm aftermath when first responders are stretched thin.
Just being in salt air or driving through some salt puddles is not a risk, though everything corrodes faster at the beach, so nothing will last as long as inland.
They warn not to drive though the water on NC 12 because it can be deeper than you think and you can hydroplane, etc. but also you can get salt water into the electrical system splashing through, and end up with a car fire later.
Anything with an an electrical system that gets salt water contamination is also toast, so flooding will mean all new appliances needed.
Good reminder to check your kitchen fire extinguisher, your larger one for the grill, and the car extinguisher in your trunk. Better safe than sorry. Never used the car one on my own, but did use it once on someone else's and it helped control enough to get people out before the tires blew and everyone in a 2 mile radius needed new shorts.
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