Preparedness Scenarios

Know what you're
preparing for

Different emergencies demand different preparations. MyPlann calculates how many days your household can sustain itself across every major emergency scenario — from the FEMA baseline to full civilizational collapse — so you know exactly where your gaps are.

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10
Emergency scenarios
1
Readiness in days
3
Plans, from Free to Plus

The full scenario library

Each scenario reflects a distinct emergency profile with its own assumptions, failure timelines, and preparation priorities. Click any scenario to read what it covers and what it assumes. Each one shows the plan it comes with, and early adopters get all of them.

We add new scenarios as we identify gaps — and user suggestions are a big part of that. If you think a scenario is missing, we'd love to hear from you.

FEMA General Preparedness Free
The official U.S. government baseline — where every household should start
Baseline

The FEMA General Preparedness standard is the official U.S. government baseline for household emergency readiness, as defined by FEMA Ready.gov. It covers both shelter-in-place and evacuation scenarios with a minimum 3-day supply baseline and a recommended 2-week target. MyPlann checks your household against it from your own answers, so you know where you stand against a known, authoritative standard.

FEMA's own guidance: the basic kit list and why three days.

Built-in Assumptions & Limitations

This baseline reflects FEMA Ready.gov guidelines as of the current version. It assumes a general emergency of unspecified type lasting 3–14 days. It does not account for scenario-specific infrastructure failures such as loss of natural gas, grid-down conditions, or supply chain disruption.

Pandemic Household
Shelter in place, stay healthy, and outlast the panic — the goal is how long you can stay home
Serious

A pandemic scenario is unlike most others in this library — the electricity stays on, water runs, and stores remain open. What fails is the availability of goods and the safety of going out to get them. COVID-19 demonstrated that the first threat is behavioral: toilet paper, cleaning products, hand sanitizer, and over-the-counter medications vanish from shelves within days not because anyone needs more than usual, but because everyone goes to get them at the same time. Readiness means minimizing your need to leave, protecting your household from exposure, maintaining enough medication supply to avoid pharmacy runs, and having the supplies and space to care for someone who becomes sick without exposing everyone else.

Built-in Assumptions & Limitations

Assumes utilities — electricity, water, natural gas, and internet — remain operational throughout. Essential services including grocery stores, pharmacies, and emergency services continue to function, though supply availability may be inconsistent. Fuel, heating, and power generation are not part of this scenario. Planning duration is calibrated to outbreak severity: 30 days for a moderate event, 90 days for a severe one, 180 days for a catastrophic scenario.

Major Hurricane Household
The storm passes in hours. The aftermath — no power, no refrigeration, no fuel, and summer heat — lasts for weeks.
Serious

Most people prepare for the wind. What actually breaks households is what comes after — two weeks without power, no refrigeration, water systems compromised, roads blocked, and gas stations stripped bare. MyPlann's hurricane scenario is built around shelter in place as the default: highways gridlock, fuel disappears before landfall, and households that planned to evacuate often find themselves stuck anyway. Katrina, Sandy, and Ian each demonstrated that the aftermath is the emergency — and that geography changes what that looks like significantly. Your FEMA flood zone and coastal distance shape every recommendation.

Built-in Assumptions & Limitations

Assumes a major hurricane (Category 4 or higher) making direct or near landfall. Power outages are assumed to last 7–30 days depending on damage. Municipal water may be affected. Evacuation may be mandatory depending on flood zone. Natural gas and utility restoration timelines vary widely by storm track and infrastructure damage. Your FEMA flood zone and coastal distance are used to personalize the scenario where available.

Major Earthquake Household
No warning, simultaneous community-wide crisis, and the first 72 hours are entirely on you
Serious

Unlike most disasters, a major earthquake gives no warning and strikes an entire community at the same time. Roads may be impassable, utilities severed, and emergency services overwhelmed simultaneously. Gas line ruptures create immediate fire risk. Structural damage may render your home uninhabitable without notice. The first 72 hours after a major quake are almost entirely self-reliant — emergency services will be triaging by severity, not by household need. A household's ability to shelter, provide first aid, communicate, and sustain itself in those critical first days determines outcomes.

Built-in Assumptions & Limitations

Assumes a major seismic event (M6.5 or higher) with an epicenter within or close to a populated area. The first 72 hours are modeled as self-reliant — emergency services are overwhelmed simultaneously across the entire affected area. Utilities including power, gas, and municipal water are assumed to be disrupted immediately. Road access may be limited for days. Building damage and red-tagging may render your home inaccessible.

Grid Down Free
Extended regional or national power failure — the scenario most people underestimate
Serious

A grid-down emergency is the loss of electrical power across a wide area for an extended period. Unlike a typical storm outage, a true grid-down event affects the infrastructure that other infrastructure depends on — meaning systems you do not think of as electric will fail on a delayed timeline. Natural gas pipeline control systems depend on electricity and will likely fail within one to two weeks. Municipal water pressure depends on electric pumping stations and typically holds for several days before dropping. Cell towers run on battery backup and go dark within hours. A grid-down event of meaningful duration requires planning well beyond the standard 72-hour mindset.

Built-in Assumptions & Limitations

This scenario assumes an extended regional or national grid-down event of unknown duration — potentially lasting months to years. Natural gas is assumed to continue flowing for approximately one week before pipeline control systems begin to fail. Municipal water pressure is assumed to hold for three to seven days. This scenario does not assume nuclear, EMP, or other causes — it focuses on the practical consequences regardless of cause. Your personalized summary is generated from your household profile answers.

Biological Attack Household
Deliberate release of a biological agent — a fundamentally different threat profile than a natural outbreak
Extreme

A deliberate biological attack differs from a pandemic in critical ways: the agent may be unknown, potentially aerosolized, and capable of rapid spread before detection. Guidance from authorities may be absent or conflicting in the early hours. The primary response is immediate shelter-in-place with air sealing, respiratory protection, and strict decontamination procedures for anyone entering from outside. Water independence becomes important if municipal treatment is compromised. Unlike a natural pandemic, the severity and transmissibility of a weaponized agent cannot be assumed in advance, which changes the depth of protection required.

Built-in Assumptions & Limitations

Assumes a deliberate biological release in or near a populated area. Agent type and transmissibility are treated as unknown at the time of response. Shelter-in-place with air sealing is the primary immediate response. Municipal water is modeled as potentially compromised depending on the nature of the attack. This scenario does not assume grid failure or societal breakdown but does assume significant pressure on medical infrastructure. Planning duration defaults to 60 days.

Nuclear War Plus
Blast, fallout, and the long-term collapse of modern infrastructure
Maximum

A nuclear war scenario represents an extreme, civilization-altering event. Initial concerns are the blast, heat, and radiation effects of detonations, followed by radioactive fallout, which can be survivable with adequate shelter and timing. The longer-term concern is the collapse of nearly all modern infrastructure and supply chains. This scenario requires the most comprehensive and long-duration preparedness of any event type.

Built-in Assumptions & Limitations

Focuses primarily on surviving the fallout period, which is most dangerous in the first 24–72 hours and declines to about 1% of its initial level within two weeks (the 7-10 rule). Assumes you are outside the immediate blast zone. Shelter-in-place for a minimum of 14 days is the primary survival strategy. The long-term planning horizon (Phase 3) mirrors the most severe grid-down and civil conflict scenarios layered together.

Dirty Bomb Household
Radiation without a nuclear explosion, and a response that starts with removing your clothes
Extreme

A dirty bomb is not a nuclear weapon — it cannot produce a nuclear explosion. A nuclear plant accident is not a nuclear war. Both involve the release of radioactive material without a nuclear blast, and both share the same immediate response: get inside, close everything, remove outer clothing (which eliminates up to 90% of radioactive material from your body), and shower with soap and water. Distance from the source determines your risk. Potassium iodide tablets protect the thyroid from radioactive iodine, but only if taken before or immediately after exposure — Fukushima distributed them four days too late for most people. The long-term risk is food and water contamination, not direct radiation exposure.

Built-in Assumptions & Limitations

Covers dirty bomb (radiological dispersal device) and nuclear plant accident or meltdown — not nuclear detonation, which is covered separately under Nuclear War. Your distance from nuclear plants and your shelter options are the most important preparation variables. Potassium iodide is only relevant for households within approximately 10–20 miles of a nuclear plant. Food and water monitoring is the primary ongoing protective measure after the acute event.

Zombie Apocalypse Plus
Total civilizational collapse — the maximum preparedness benchmark
Off the Charts

The Zombie Apocalypse scenario is our way of modeling total civilizational collapse — regardless of the fictional cause. If you are prepared for zombies, you are prepared for everything else. This scenario assumes all infrastructure has failed permanently, social order has broken down, and long-term self-sufficiency is the only path forward. It is the maximum preparedness benchmark.

Built-in Assumptions & Limitations

This is a maximum-severity, indefinite-duration scenario with no assumed recovery of infrastructure, supply chains, or social order. It is not intended as a literal planning scenario but as the upper bound of preparedness depth. If your inventory and skills cover this scenario, they cover all others. The CDC ran this exact framing as a real public health campaign in 2011. It cost $87 and generated 3.6 billion media impressions.

AI Takeover Plus
The lights stay on, but you cannot trust your payments, pharmacy, records or messages
Serious

Automated systems that households depend on — payments, deliveries, pharmacies, records, messages and smart-home devices — become unavailable or untrustworthy because AI agents are acting outside anyone’s control. The lights may stay on, but you cannot verify what is true, reach your accounts or count on a delivery.

Built-in Assumptions & Limitations

Assumes a widespread failure or compromise of automated systems rather than a physical disaster. AI agents operating outside their operators’ control disrupt payment networks, delivery and pharmacy systems, online accounts and records, and the messages you receive. Power and water are assumed to stay on. Banks, retailers and agencies freeze or ration access while they work out what is real, and the disruption runs for days to weeks with a slow return of trust rather than a single all-clear.

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