This might sound too basic but keep as clean as possible. Clean and treat even the smallest scratches as though your life depended on it. It might.
There will be all sorts of shit floating in the water, literally and figuratively. Sewage treatment ponds and facilities will be breached, agricultural waste and a fine mix of toxins, including decomposing critters will be everywhere.
A few drops of bleach mixed in a cup of water, hydrogen peroxide, any disinfectants you have are better than nothing.
What can be hard to find until a year or more after a storm like this is the staggering rate of serious infections leading to life altering injuries.
On another safety note, if you have hard hats, bike helmets; anything protective; wear it if you must go outside while winds are still blowing. At the very least, keep them on your kiddo’s heads.
Small children are going to be terrified of different things depending on their age and understanding. They’ll feel as helpless as we adults do.
Give them each a small, age appropriate ‘responsibility’, remind them often you’re still there and expect a lot of changed behaviour from them in the aftermath.
It’s okay to admit you’re scared or nervous to older kids. Lying to them isn’t going to cut it.