Radiological Threats

WI planning
Planning zones for Wisconsin nuclear power plants

Wisconsin Emergency Management develops plans and conducts exercises to respond to the potential release of materials from three nuclear power plants that are within or near the state’s borders. WEM also works with its partner agencies to assess potential radiological threats and how to respond.

Know the Terms
In the event of a radiological incident, pay attention to emergency information. The following are some common terms emergency responders may use and what they mean for the public.


Notification of Unusual Event
A small problem has occurred at the plant. No radiation leak is expected. No action on your part will be necessary.

A small problem has occurred, and small amounts of radiation could leak inside the plant. This will not affect you and no action is required.

Site Area Emergency
Area sirens may be sounded. Listen to your radio or television for safety information.

General Emergency
Radiation could leak outside the plant and off the plant site. The sirens will sound. Tune to your local radio or television station for reports. Be prepared to follow instructions promptly.

During a Nuclear Power Plant Emergency
Get Inside, Stay Inside, Stay Tuned! In the event of an event at a nuclear power plant or a radiological attack, you should remember to “Get Inside, Stay Inside, Stay Tuned!


ReadyWisconsin encourages everyone to head indoors and remain in place, until instructed to do otherwise. Make sure you have a radio or internet connected device, which will allow you to access information about what steps to take next.

If an evacuation order is issued, make sure to follow the designated routes to reach the identified safe location. Make sure everyone in your family knows where to go and be sure to bring pets with you. Take important documents, such as medical or financial papers, and any prescriptions with you. Be ready for the possibility that you may not be able to return home for an extended period.

Additional Resources