FIRST 72 HOURS — IMMEDIATE ACTION CHECKLIST

The first three days of a grid-down event determine outcomes for everything that follows. Not because the situation is most dangerous in those hours — it often isn’t — but because the decisions made in the first 72 hours establish the household’s operating posture for days, weeks, or months afterward. A household that moves through the first three days with clear priorities and deliberate action is positioned for long-term resilience. A household that spends those hours waiting to see if power comes back, burning through resources without a plan, and making reactive decisions compounds its vulnerability with every passing hour.

This post is an action checklist, not an essay. In a real grid-down event, you do not want to read. You want a list. Print this page and put it in your physical preparedness binder alongside your other paper reference material. The internet goes down with the grid. Paper does not.

The checklist is organized in priority order within each time window. Complete each item before moving to the next. Do not skip ahead.

HOUR 0-1 — ASSESS AND SECURE

Establish what has failed and what has not.

[ ] Check circuit breakers — is this a household issue or a wider outage?
[ ] Check neighbors — are they also without power?
[ ] Check battery-powered radio or car radio for emergency broadcasts
[ ] Check phone for emergency alerts (while cellular is still functional)
[ ] Identify the nature and apparent scope of the outage

Do not assume. A localized outage and a regional grid failure require different responses. A localized outage resolves in hours. A regional grid failure may last days, weeks, or longer. Spend the first 15 minutes gathering information before committing resources or actions.

Secure the house.

[ ] Lock all exterior doors and windows — this is not paranoia, it is baseline
[ ] Note who is in the household and account for all members
[ ] Identify any immediate medical needs that require power (medical equipment, refrigerated medications)
[ ] Locate and stage flashlights and headlamps — distribute one per household member

Do not open the refrigerator or freezer. A closed refrigerator maintains safe food temperature for 4 hours. A closed freezer maintains safe temperature for 24-48 hours depending on fullness. Every unnecessary opening shortens that window. Decide what you need from the refrigerator and get it in one trip.

HOUR 1-6 — WATER, FOOD, COMMUNICATION

Water — secure what you have.

[ ] Fill bathtubs immediately — municipal water pressure may fail within hours if pump stations lose power. A standard bathtub holds 40-80 gallons. Fill every tub in the house now, not later.
[ ] Fill every large pot, bucket, and container available
[ ] Locate stored water supply and assess how many days it covers at 1 gallon per person per day minimum
[ ] Do not use toilets beyond minimum necessary — if municipal water fails, flushing becomes a sanitation management problem
[ ] Locate water purification supplies: filter, purification tablets, boiling capacity

Food — inventory and prioritize.

[ ] Identify what in the refrigerator needs to be eaten first (highest perishability)
[ ] Do not open the freezer — assess its contents from memory
[ ] Identify your shelf-stable pantry supply and calculate rough days of coverage
[ ] Plan meals from perishable food first, shelf-stable food second
[ ] Do not begin consuming long-term storage food until perishables are exhausted

Communication — establish what works.

[ ] Charge all phones and devices immediately from any available power source (car, battery bank, solar)
[ ] Contact immediate family members to establish status and location
[ ] Identify your battery-powered or hand-crank radio and confirm it functions
[ ] Establish a communication plan if cellular fails: who goes where, who checks on whom, what the rally point is
[ ] If you have a ham radio: power it up, check local repeaters, identify emergency nets in operation

HOUR 6-24 — STABILIZE SYSTEMS

Heating or cooling — assess your vulnerability.

[ ] What is the outdoor temperature and what is the trajectory?
[ ] At what point does your home become too cold or too hot to be safely occupied?
[ ] Identify your heat source: wood stove, fireplace, propane heater, kerosene heater
[ ] Verify heat source is functional and fuel supply is adequate
[ ] If you have no backup heat and outdoor temperature is dropping: identify the warmest room in the house and plan to consolidate the household there
[ ] Review the Staying Warm Without Electricity post for specific protocols

Sanitation — plan before it becomes a crisis.

[ ] Assess toilet function — if municipal water pressure is failing, toilets will stop flushing
[ ] Locate bucket toilet or composting toilet supplies
[ ] Identify waste disposal site (outdoor latrine location or bag-and-bury protocol)
[ ] Establish handwashing station with stored water and soap
[ ] Brief household members on sanitation protocol — everyone needs to know the plan before it’s needed

Medical — inventory and plan.

[ ] Complete full inventory of prescription medications in the household
[ ] Calculate how many days of each critical medication remain
[ ] Identify which medications require refrigeration and address storage
[ ] Locate first aid kit and verify contents
[ ] Identify any household members with conditions requiring ongoing monitoring (diabetes, heart conditions, chronic illness)
[ ] Assess whether any medical situation requires evacuation before conditions deteriorate

Security — establish perimeter awareness.

[ ] Brief household members on security protocol
[ ] Identify entry points and assign monitoring responsibility
[ ] Establish household rules for who answers the door and how
[ ] Connect with immediate neighbors — share information and establish mutual awareness
[ ] Do not advertise your supply level or preparedness status to unknown parties

HOUR 24-72 — ASSESS DURATION AND ADJUST

Determine likely duration.

[ ] Continue monitoring radio for official information
[ ] Assess infrastructure signals: are utility crews visible? Are municipal services operating?
[ ] Distinguish between a short-term outage (days) and a prolonged event (weeks or longer)
[ ] Adjust resource consumption rate to match likely duration — if this is weeks, not days, rationing begins now

Water — establish ongoing production.

[ ] If tap water has failed: identify your collection and filtration system
[ ] Begin operating rain barrel collection, gravity filter, or well pump as applicable
[ ] Establish daily water budget: 1 gallon per person per day absolute minimum, 3 gallons per person per day for cooking and basic hygiene
[ ] Designate clean water storage containers and keep them covered

Food — begin rationing protocol.

[ ] If outage appears to extend beyond 72 hours: begin tracking daily caloric consumption
[ ] Prioritize caloric density over variety
[ ] Establish one hot meal per day using the rocket stove or other no-power cooking method
[ ] Account for increased caloric needs if household members are doing physical labor

Information — establish ongoing monitoring.

[ ] Set a schedule for radio monitoring — twice daily minimum
[ ] Identify what information you need: regional conditions, road status, utility restoration timeline, civil order status
[ ] Note any patterns in what information is available and what is not — absence of information is itself information

Neighbor network — activate.

[ ] Identify which neighbors are home and what their situation is
[ ] Identify who has what resources and skills: who has a generator, who has medical training, who has a vehicle with fuel
[ ] Establish a check-in protocol — daily contact with immediate neighbors
[ ] Begin building the mutual aid framework described in Community Defense Strategies

WHAT NOT TO DO IN THE FIRST 72 HOURS

Do not wait. The most common first 72-hour failure is paralysis — waiting to see if power comes back before taking any preparatory action. Water pressure fails. Refrigerated food spoils. Medical equipment runs down. The bathtub that could have been filled in hour one cannot be filled in hour twelve if pressure has dropped. Act on the assumption that the situation will be worse than you currently believe. If you are wrong, you have done unnecessary work. If you are right, you have bought days of margin.

Do not broadcast. A household that is visibly managing well — generator running, lights on, normal activity — in a neighborhood that is struggling attracts attention. This is not paranoia. It is the normal social dynamic of scarcity. Manage your situation quietly. Share generously with neighbors you trust. Do not advertise to the wider community what you have.

Do not exhaust your fuel in the first 24 hours. Generator fuel, propane, lamp oil, and firewood all feel unlimited at the beginning of an event. They are not. Run your generator only for essential loads. Use lighting at minimum necessary levels. The fuel you conserve in hour one is available in week two.

Do not neglect sleep. Decision-making quality degrades sharply with sleep deprivation. A household running on adrenaline through the first 72 hours is making worse decisions by hour 48 and is physically compromised by hour 72. Establish a sleep rotation. Maintain normal sleep schedules as much as possible. Rest is not a luxury in a prolonged event — it is a functional requirement.

Do not isolate. A household that locks the door and speaks to no one is managing a crisis alone. A neighborhood that communicates is managing a crisis together. The difference in outcome is significant and well-documented across every type of prolonged community disruption. Know your neighbors. Establish contact early. Share information. Build the network before you need it as a dependency.

REFERENCE QUICK CARD

Print and post:

first-72-hours-checklist Download

For water collection and filtration, see Rain Barrel System and Gravity Water Filter Build in DIY Schematics. For heating without electricity, see Staying Warm Without Electricity. For sanitation when water fails, see Sanitation Without Running Water and Composting Toilet Build. For communication when internet fails, see Communication Without Internet. For the full medical medication protocol, see Medications — When SHTF.

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