Frequently Asked Questions (FAQ)

Last updated: June 5, 2025

What is a fireworks fallout zone?

A fireworks fallout zone is the designated safety area around a launch site where potentially hazardous debris from aerial shells is expected to fall. This includes malfunctioning shells or "duds" that fall back to earth. Establishing a correct fallout zone is critical for keeping people and property safe during a display.

How is the fallout distance calculated?

Our calculator uses the standard set by NFPA 1123, which is 70 feet of radius for every inch of shell diameter. For example, a 3-inch shell requires a 210-foot fallout radius ($3 \times 70$). This is the baseline requirement for most areas.

Why does the calculator show different rules in Virginia and West Virginia?

Some states have adopted laws that are more conservative than the NFPA standard. Virginia and West Virginia, for example, require a larger radius of 100 feet per inch of shell diameter. Our calculator automatically detects when your selected location is within these states and applies the stricter rule to ensure you have the most accurate guidance.

How does wind affect the fallout zone?

Wind is a major factor in fireworks safety. A strong wind can blow debris and dud shells outside of the originally planned fallout area. Professional operators must monitor the wind and are required by NFPA 1123 to angle their mortars into the wind to compensate. Our tool calculates the required size of the safety radius, but the operator on-site is responsible for managing its position based on real-time weather conditions.

Do I need to enable location access to use the tool?

Location access is optional but highly recommended for the most accurate results. It allows the calculator to automatically identify your state and apply any specific local rules that differ from the standard NFPA code. If you don't enable it, the calculator will use the standard NFPA 1123 rules by default.

Can I search for a location manually?

Yes! If you deny location access or want to plan for a different area, you can use the search bar at the top of the controls to type in any address, city, or landmark. You can also click directly on the map or drag the marker to fine-tune the exact launch point.

What map data does this site use?

We use Google Maps' satellite and hybrid imagery, which provides accurate, up-to-date geographical data to help you visualize your launch site and the surrounding area in real-world context.

Is this tool a substitute for a licensed pyrotechnic operator or legal advice?

No. This tool is for informational and planning purposes only and is not a substitute for the expertise of a licensed pyrotechnic operator or for legal counsel. All professional fireworks displays must be conducted by qualified personnel who are knowledgeable about all applicable federal, state, and local laws.

Is this site suitable for professional fireworks displays?

Yes, it is designed as a powerful initial planning tool for professionals. It provides guidance based on NFPA 1123 and known regional laws to help operators, sponsors, and safety officials quickly assess a potential site's viability. This information should be used as part of a complete site plan.

Can I use this calculator for consumer fireworks?

This tool is specifically designed based on NFPA 1123, which is the code for professional display fireworks. Consumer fireworks are regulated by different standards (CPSC regulations) and can have smaller -or- sometimes even LARGER required safety distances based on local rules, regulations and laws. Always follow the manufacturer's instructions and Local AHJ Guidelines for consumer fireworks.

What does NFPA stand for?

NFPA stands for the National Fire Protection Association. It is a global nonprofit organization devoted to eliminating death, injury, property, and economic loss due to fire, electrical, and related hazards. They create codes and standards, like NFPA 1123, that are widely adopted by governments and organizations.

What if my state isn't listed with special rules?

If your state isn't specifically mentioned (like Virginia or West Virginia), our calculator defaults to the nationally recognized standard, NFPA 1123 (70 feet per inch). However, you should always verify with your local fire marshal or Authority Having Jurisdiction (AHJ) to ensure there are no local ordinances that supersede this standard.

How can I report an issue or suggest a new feature?

We'd love to hear from you! Please visit our Feedback page to send us your thoughts, bug reports, or ideas for making this tool even better.