Finances and Emergencies
The banking system is highly automated and globally interconnected. Individuals should prepare for limited duration, localized failures of services.
Remember that your paycheck, social security, child support, etc., payments may depend upon automated systems. Be aware that funds may not be immediately available if there is a problem resulting from an emergency.
Put some cash aside with your emergency supplies. Even if retailers accept credit cards, they still need power to operate and authorize purchases, and be willing to accept them. Debit cards will have the same liabilities as credit cards. Expect to use cash for most purchases.
Personal items/Issues of Concern
Personal record keeping should be maintained in good order. Keep your own copies of receipts, warranties, documentation of all transactions, etc. You may not be able to rely on the records of those with whom you do business.
Take photos and/or videos of your valuables. Make copies and keep them in another city or state.