Wildfire Evacuation: How to Prepare (Complete Guide)

Why Wildfires Demand a Different Mindset

Most emergencies give you time. Hurricanes track for days. Floods rise over hours. Wildfires can go from distant smoke to impassable roads in under an hour.

The Camp Fire in Paradise, California (November 2018) destroyed 18,804 structures and killed 85 people — the deadliest wildfire in California history. It burned 70,000 acres in the first 24 hours. Many of those who died had no evacuation plan, no go-bag, and no pre-committed trigger for when to leave. When the mandatory order came, roads were already congested and visibility was near zero.

Four variables make wildfire different from other disasters:

Speed of spread. Under dry, windy conditions, fire can move faster than a running person. What looks far away can reach you in minutes.
Toxic smoke. Wildfire smoke contains CO, fine particulates, hydrogen cyanide, and dozens of carcinogens. Poor visibility and health impairment begin well before fire is nearby.
Road closures. A single fire blocking the primary road out of a canyon community can trap everyone who waited. Alternate routes matter.
No second chance. Unlike a flood where you can climb to the roof and wait for rescue, there is no viable shelter-in-place option once fire is at your structure.

Before: Preparing Your Property

Defensible Space — The Two Zones

Defensible space is the managed buffer between your home and surrounding wildland fuels. It does two things: slows fire spread toward your structure, and gives firefighters a survivable area to work.

Zone 1: 0 to 30 feet from your structure

This is the lean-and-clean zone. The goal is eliminating ladder fuels (vegetation that allows fire to climb from the ground to the tree canopy) and removing anything combustible near the home.

Remove dead vegetation, dry leaves, and woodpiles from within 30 feet.
Space shrubs so fire cannot spread continuously from plant to plant. A rough guide: spacing equal to twice the shrub’s height.
Prune tree limbs to a minimum of 6 feet above the ground to prevent ground fire from climbing to the canopy.
Remove any tree branches that hang within 10 feet of your chimney or roofline.
Replace wood mulch within 5 feet of the structure with gravel, decomposed granite, or other non-combustible material.

Zone 2: 30 to 100 feet from your structure

This zone reduces fire intensity and slows its approach. Full clearance is not the goal — reduced fuel load is.

Keep grass mowed short and watered where possible.
Remove dead branches and debris from tree crowns.
Eliminate dense groupings of shrubs; space plantings to interrupt continuous fuel.
Remove or prune trees that lean over structures or could fall onto them.

Ember-Proofing Your Home

Direct flame contact is rarely how homes ignite during a wildfire. Research from the Insurance Institute for Business and Home Safety (IBHS) and the U.S. Forest Service consistently shows that embers — firebrands carried by wind — are the primary home ignition path. Embers can travel a mile or more ahead of the fire front and enter through vent openings, gaps under doors, and spaces around utility penetrations.

Key vulnerabilities to address:

Roof vents and attic vents: Cover with 1/8-inch corrosion-resistant metal mesh. Standard vent screening has openings large enough to admit embers.
Eaves and soffits: Box them in with non-combustible material or use ember-resistant vented soffits.
Deck and fence connections: A wood fence attached to the house creates a fuel path directly to your siding. Use metal connectors and a non-combustible break at the structure.
Gaps under exterior doors: Install door sweeps to close the gap.
Gutters: Metal gutters filled with debris become fire catchers. Clean them before fire season and consider gutter guards.
Roofing material: Class A fire-rated roofing (metal, concrete or clay tile, or Class A asphalt shingles) significantly reduces the risk of ember ignition on the roof surface.

Stage Your Go-Bag Before Fire Season

Your wildfire go-bag must be ready to grab in under two minutes. You will not have time to pack it when the order comes.

What belongs in it:

Documents: Original or certified copies of passports, photo IDs, Social Security cards, insurance policies (home, auto, health), property deed or lease, vehicle title, and a current prescription list. Use a waterproof document holder.
Medications: At least a 30-day supply of all prescription medications. Refill proactively at the start of fire season.
Respirators: N95 masks for every household member. Wildfire smoke is immediately hazardous at high concentrations — do not rely on cloth or surgical masks.
Phone charger and power bank: Cell service often degrades near active fires; a charged power bank keeps you connected when you need it.
Cash: Card readers go down during disasters and evacuations. Keep $200-300 in mixed bills.
Clothing: One change per person for 48 hours. Natural fibers (wool, cotton) over synthetics — synthetics melt at high temperatures.
Water and food: 24-48 hours minimum — enough for the evacuation period before you reach a hotel or shelter.
Pet supplies: Food, water, leash, carrier, vaccination records. Many shelters do not accept pets — know where you are going in advance.
Digital backup: A USB drive or small external hard drive with irreplaceable photos, financial records, and other files.

For a more detailed gear list, see our Bug-Out Bag List.

Build a Pre-Loaded Evacuation Box

In addition to your go-bag, many fire-prone households keep a plastic bin or rolling tote staged near the door with items too large for the bag: extra medications, important files in a fireproof box, a laptop, hard drives, items with irreplaceable sentimental value. It takes one trip to the car.

The logic: when an evacuation order drops, people freeze or fixate on impossible choices — what to save, what to leave. Deciding in advance eliminates that cognitive load.

Use a Document Scanner or Phone App

Services like Google PhotoScan, Adobe Scan, or a dedicated document scanner let you maintain a digital archive of every critical document. Store it in encrypted cloud storage (1Password, Bitwarden, or a Google Drive folder with two-factor authentication). This backup ensures you can access your documents even if your physical copies are lost.

There are two layers of alert you need:

Wireless Emergency Alerts (WEA): These appear as emergency text messages on your phone and are issued by FEMA, NWS, and local emergency managers. They are enabled by default on most phones. Verify yours is enabled in your phone’s notification settings. Do not disable these.
Local notification systems: Most counties in wildfire-prone areas operate notification systems — Nixle, AlertSense, Genasys (formerly Zonehaven), or county-specific apps. These issue evacuation warnings and orders for your specific zone, often faster than WEA. Search “[your county] emergency alert registration” and sign up before fire season.

Know your evacuation zone designation (typically Zone A, B, C or similar). Zones are released sequentially — Zone A first, then B if needed. Knowing your zone tells you exactly when your number is called.

Know Your Routes — Both Directions

Drive your evacuation routes before you need them. Identify at minimum:

Primary route: The fastest way out to a major highway.
Alternate route: An entirely different direction or road, in case the primary is blocked by fire or traffic.

Note where road closures are most likely. In canyon communities, there may be only one paved road in and out — if that is cut off, what is the next option? Ask your county emergency management office or neighbors who have been through previous evacuations.

During: When the Order Comes

Leave Early — Before the Mandatory Order

This is the single most important action you can take.

An evacuation warning means conditions are threatening your area and you should prepare to leave. This is your signal to go if you have elderly family members, young children, pets, or medical equipment that slows departure. Leaving during a warning means you leave in daylight, with clear roads, and ahead of the traffic surge.

A mandatory evacuation order means the threat is imminent or already present. Roads will be congested. Visibility may be reduced. Some routes may already be cut off. If you are leaving at this point, you are behind the curve.

Pre-commit your departure trigger in writing — put it in your phone: “If an evacuation warning is issued for my zone, I leave within 30 minutes.”

As You Leave the House

Before you drive away:

Close all windows and doors, including interior doors. Closed doors significantly slow ember and smoke intrusion if fire reaches your home while you are gone — and they may be the difference between your house surviving and burning down.
Close the fireplace damper.
Leave exterior lights on. In heavy smoke, lights help firefighters and other responders locate structures.
If you have 5-10 minutes and a garden hose, wet down the roof, eaves, and wooden deck surfaces. This is not a substitute for leaving — it is a last-action step.
Disconnect automatic garage door openers — power outages during a fire can trap your car inside.
Park facing out at the start of fire season so you can depart immediately.

On the Road

Follow official evacuation routes. Attempting shortcuts can lead you into closed roads or directly toward the fire.
Keep windows up and run the car’s air recirculation mode to reduce smoke inside the vehicle.
If visibility drops severely, turn on headlights and hazard lights and slow down.
If you are caught by fire while driving, do not attempt to outrun it through a wall of flame. Pull off, turn off the engine, turn on headlights and hazard lights, close all vents, and get below window level. Cover yourself with a blanket or coat. Stay in the vehicle unless it catches fire.

After: Re-Entry and Recovery

Air Quality and Respiratory Safety

After a wildfire, air quality in and around the affected area remains hazardous for days to weeks. Ash contains heavy metals, asbestos from older buildings, and a range of carcinogens. Fine particulate matter (PM2.5) at post-fire concentrations causes both acute and long-term respiratory harm.

Do not return until officials have cleared the area for re-entry.
Wear an N95 respirator (or better — P100 if available) during any outdoor activity, cleanup, or inspection in the affected area. Surgical and cloth masks do not filter fine particulate matter at levels found in wildfire ash.
Use the AQI (Air Quality Index) at AirNow.gov to monitor conditions in your zip code before and after return. An AQI above 150 (unhealthy) warrants limiting outdoor exposure.

Check for Hidden Embers Before Sleeping

Homes that appear to have survived can still be lost hours after a fire passes. Embers smoldering in wall cavities, attic insulation, or crawlspaces can ignite later — sometimes after the fire has officially moved through.

Before sleeping in or near a structure that was in a fire area:

Walk the perimeter and check for any visible smoke or warmth in the walls, roof, or attic.
Check the attic if accessible.
Look for smoke coming from outlets, light switches, or other wall penetrations inside.
Keep a charged garden hose available for at least 24 hours after a nearby burn.

Documenting Damage

If your property was damaged, document everything with photos and video before touching or cleaning anything. Your insurance claim depends on this record. Photograph:

Every room of the interior
All exterior faces of the structure
Vehicles, outbuildings, fences
Personal property (contents)

Keep all receipts from evacuation expenses — hotels, meals, temporary housing. Many homeowners’ policies include “loss of use” coverage that reimburses these costs.

Quick-Reference: Wildfire Evacuation Checklist

Before fire season (annually):

When a warning is issued:

Leave immediately if in Zone A or if you have mobility or medical needs
Go-bag and evacuation box loaded in vehicle
All windows and doors closed (including interior doors)
Fireplace damper closed
Exterior lights left on
Garage door set to manual; car parked facing out

After re-entry:

N95 respirators worn for all outdoor activity and cleanup
AQI checked before extended outdoor exposure
Structure inspected for hidden embers before sleeping
All damage documented with photos before cleanup

For broader emergency planning, see our Emergency Preparedness Checklist and Natural Disaster Preparedness Guide.

Sources: FEMA Ready.gov, California Department of Forestry and Fire Protection (CAL FIRE), Insurance Institute for Business and Home Safety (IBHS), NOAA AirNow, USFS Fire Research, Butte County After-Action Reports (Camp Fire 2018).

Frequently Asked Questions

When should I leave during a wildfire — do I have to wait for a mandatory evacuation order?

No. You should leave before a mandatory order is issued. Studies of the 2018 Camp Fire in Paradise, CA show that residents who departed before mandatory orders had dramatically better outcomes. An evacuation warning (not yet mandatory) is your signal to go. Pre-commit to a departure trigger so you're not deciding under pressure.

What is defensible space and how much do I need?

Defensible space is the buffer between your home and surrounding vegetation that slows fire spread and gives firefighters a safe area to work. California's standard requires Zone 1 (0-30 feet, lean and clean) and Zone 2 (30-100 feet, reduced fuel load). This applies in any WUI setting, not just California.

How does fire actually ignite a house — is it direct flame contact?

Mostly not. Research from IBHS and the USFS shows that embers (firebrands) carried by wind are the primary ignition path for structure fires during a wildfire. Embers can travel a mile or more ahead of the fire front and enter through roof vents, eaves, and gaps. Home hardening focuses on blocking those entry points.

What goes in a wildfire go-bag?

Documents (IDs, insurance, passports — originals or copies), medications (30-day supply), phone charger and power bank, N95 respirators, change of clothing, cash, water and snacks for 24-48 hours, pet supplies if applicable, and a hard drive or USB with irreplaceable digital files. The bag should be staged and ready — not assembled under smoke.

What do I do if I get caught in a wildfire while driving?

Pull off the road, turn off the engine, turn on headlights and hazard lights, close all vents, lie on the floor below window level, and cover yourself with a blanket or coat. Do not leave the vehicle unless it catches fire. The vehicle provides meaningful short-term protection from radiant heat.