You need to have 1-3 propane tanks (kind used for BBQs) filled and a two burner cook stove. I have this at the ready just in case. If you have no heat at least you have hot food and hot drinks
Get yourself a couple of those Mr. Heater heaters. Catalytic heat with a low oxygen shutoff. Also get an adapter so you can use the larger tanks as they are made for propane canisters. Heating with a cooking stove puts carbon monoxide into the air.
I bought one of those heaters and adapters along with a propane/CO detector for the kids/grand kids.