It's true: I picked this title just to freak out the people who are looking for mundane plans. (sarcasm!) If that's you, have a nice day, and be prepared and safe! If you're here for some magical advice, read on!
What can we as a community of magical practitioners do to help fix this? There are those who don't believe weather magic is the right thing to do. Some might think that the weather has to do its thing because we don't know how what we do will impact others. I disagree. Aren't you shocked? For something as major as this hurricane is purported to be, let's make an exception. We need to focus on peace, on calming the storm and dissipating the force, on putting up a barrier, and sending it out to sea.
You can't do the work when you're freaked the f*k out. Breathe, ground, center, and get on it.
Pledge to donate all leftover non perishable food supplies procured for this emergency to a food pantry or food drive.
I've felt called to offer something to a deity I am not familiar with, Oya. I don't have a whole lot of time to get familiar right now, so I treated it like a cold call. I have a friend who works with Her, so I introduced myself, pledged an offering She is reputed to like (eggplant, red wine, plums, red grapes... Purple colors!) and asked that it be received in support of the work my friend is doing, which I agree with and support as well. I believe it will be well received.
It might sound silly, but enchant your duct tape, cardboard wood and rope. When you tie something down, make it an actual binding magically as well.
If you're forced to evacuate, you can still lay down the work on your home and ask your Patrons or the land itself to keep vigil for you and protect the place.
For those who work with saints: Ask Saint Irene to take her namesake out to sea! Saint Christopher is supposed to help protect against hurricanes too.
Whenever you have a moment, center, tap into your power, calm yourself and the storm and and push this storm far out to sea.
Let us be kind to each other and helpful; Any kindness upholds the Pax Deorum, the Peace of the Gods, and benefits us all. And don't fight over the last jar of jelly in the store. It's just grapes and sugar!