Introduction
During a wildfire, minutes matter. Evacuation time is not just “drive time” — it also includes the time it takes to gather people, pets, medications, documents, and to safely get the vehicle moving. On top of that, real-world conditions can slow travel: traffic surges, reduced visibility, road closures, and emergency vehicles.
This wildfire evacuation route planner is a planning tool. It produces a single estimated total time in minutes so you can compare scenarios (for example: leaving now vs. after packing more items, or taking a longer route that may move faster). It is not a navigation app and it does not replace official evacuation orders.
If you are under an active evacuation warning or order, follow local emergency guidance and use official sources for routes and shelter locations. If you are planning ahead, consider running the calculator for multiple destinations (a nearby “clear zone,” a friend’s home, and an official shelter) so you understand how your time changes with distance and congestion.
The goal is to help you answer practical questions such as: “If we need 15 minutes to load the car, how far can we realistically get in the first hour?” and “How much does traffic risk change our plan?” Even a rough estimate can motivate earlier departure and better preparation.
How to use
Enter your best estimate for each input, then select Estimate evacuation time. The result area will show a total time and a short message based on the risk level.
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Route distance (miles): The length of the route you expect to take to reach a safer area. Use a map estimate if you have one.
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Average speed (mph): Your realistic average speed during evacuation conditions, not the posted speed limit. Consider intersections, smoke, and traffic.
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Preparation time (minutes): Time before the vehicle is moving (gathering people/pets, loading essentials, turning off utilities if appropriate, etc.).
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Congestion risk factor (1–5): A simple way to add a buffer for slowdowns. Higher values add more minutes.
After you calculate, you can use Copy plan summary to copy a plain-text summary for a note, message, or checklist. If your browser blocks clipboard access, you can still manually select and copy the result text.
For best results, treat the inputs as “stress-tested” values. For example, if your normal drive would average 55 mph, you might test 35–45 mph to reflect smoke, stop-and-go traffic, and cautious driving. If you have multiple vehicles or need to coordinate with neighbors, increase preparation time to reflect real coordination.
Worked example
Suppose you plan to evacuate along an 18-mile route. You expect an average speed of 35 mph due to traffic and smoke, you need 12 minutes to prepare, and you choose a congestion risk factor of 3.
- Travel time = (18 ÷ 35) × 60 ≈ 30.9 minutes
- Preparation time = 12 minutes
- Congestion buffer = 3 × 10 = 30 minutes
- Total ≈ 30.9 + 12 + 30 = 72.9 minutes
In this example, the buffer is a large portion of the total. That is intentional: evacuation travel can become unpredictable quickly. If you reduce preparation time (for example, by pre-packing a “go bag” and keeping the car fueled), you can meaningfully reduce the total.
A second quick comparison shows why scenario testing helps. If the same 18-mile route drops to 25 mph because of gridlock, travel time becomes (18 ÷ 25) × 60 = 43.2 minutes. With the same 12-minute prep and risk 3 buffer (30 minutes), the total becomes 85.2 minutes. That difference can change when you decide to leave and which route you choose.
Readiness checklist and planning tips
The fastest evacuation is the one you can start immediately. Preparation time is often the easiest part of the estimate to improve because it depends on habits you can build before an emergency. Use the checklist below to reduce “prep minutes” without rushing or skipping safety steps.
Before fire season (or as early as possible)
- Fuel and maintenance: keep the tank above half when conditions are dry and windy; maintain tires and wipers for low-visibility driving.
- Go-bags: pack essentials for each person (water, snacks, chargers, basic first aid, masks) and store them in a consistent location.
- Documents: keep copies of IDs, insurance, prescriptions, and key contacts in a grab-and-go folder (paper and/or offline digital).
- Pets and livestock: pre-stage carriers, leashes, food, and a plan for transport; practice loading so it is not new during an emergency.
- Communication plan: choose an out-of-area contact and a meeting point; write down phone numbers in case devices fail.
When conditions worsen (red flag days, smoke, nearby incidents)
- Run the calculator with conservative inputs: lower speed and higher risk to reflect uncertainty.
- Stage items by the exit: shoes, keys, medications, and go-bags in one place to reduce last-minute searching.
- Plan two routes: a primary route and an alternate in case of closure; note which roads are narrow, steep, or likely to bottleneck.
- Accessibility needs: if you use mobility aids or medical devices, add time for setup and loading; consider a higher risk factor if you cannot easily reroute.
How to choose a risk factor (practical guidance)
The risk factor is a simple slider from 1 to 5. Use it to reflect how likely you think delays are. If you are unsure, choose 3 and then test 4–5 to see how much cushion you might need.
- Risk 1 (low): early departure, multiple open roads, light traffic, good visibility.
- Risk 2 (moderate): some traffic, occasional slowdowns, but routes are generally open.
- Risk 3 (elevated): stop-and-go waves, smoke reducing speed, or known bottlenecks.
- Risk 4 (high): closures or detours likely, heavy traffic, limited visibility, emergency vehicles present.
- Risk 5 (extreme): gridlock possible, rapid changes, limited route options, high uncertainty.
If you are coordinating with others (family members arriving from work, neighbors needing assistance, multiple cars leaving together), consider increasing both preparation time and risk. Coordination can add delays even when the road itself is clear.
Limitations and safety notes
This calculator is a simplified estimator. It does not know current fire behavior, wind, road closures, or official evacuation routes. Use it for planning and comparison, not as a guarantee.
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Not real-time routing: it does not pull live traffic, closures, or shelter availability.
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Average speed is hard to predict: smoke, darkness, debris, and emergency response activity can reduce speed far below normal.
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Congestion buffer is a heuristic: “risk × 10 minutes” is a simple planning buffer, not a scientific model.
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Local guidance comes first: follow evacuation orders, use official alert systems, and do not delay departure to “optimize” a number.
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Accessibility and special needs: if you need extra time for mobility, medical equipment, or multiple vehicles, increase preparation time and consider a higher risk factor.
Practical planning tips: keep your vehicle fueled, store essential documents in a grab-and-go folder, plan at least two routes, and set a family communication plan. If you are in a high-risk area, consider running this calculator with multiple scenarios (short route/slow speed, longer route/faster speed, and different prep times) to see how sensitive your plan is.
Finally, remember that “safer area” can mean different things depending on local guidance: a community shelter, a large paved area away from vegetation, or a location outside the evacuation zone. Always prioritize official instructions and do not drive into smoke or flames. If conditions are deteriorating, leaving earlier is usually safer than waiting for perfect information.
