Plenty of people with EVs deal with these issues, including in Florida. They are simply something someone must plan for in emergencies, like they have to with a gas vehicle. It's nowhere near a deal breaker at all.
1) Consider leaving a day or even 1/2 day before a natural disaster emergency is formally declared. This ensures numerous charging options. (This is also good advice for gas vehicle owners). Most states actually advise this anyway: to leave right before any mandatory evacuation. This almost guarantees you will not face gridlock or major traffic issues.
2) In almost all situations, a drive of 100 miles will get anyone out of danger and into a much safer area, even in Florida. A charged EV can easily handle this range- even if stuck on the interstate for hours.
3) Consider your portable battery options for emergencies. If I live right along the coast and only have an EV, I'm spending money on one of these chargers for the extremely rare occasion of an emergency last second evacuation and the remote possibility I might need an extra 50-75 mile range.
4) If someone decides to stay, having an electric vehicle could prove useful in having the ability to charge phones and other devices, and possibly use it to run certain home appliances for a period of time with the proper equipment.
5) You don't have to worry about gas stations running out of gas- or gas stations having 30-50-80 cars in line for a few pumps.
