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Rad Resilient City Initiative

Sample Messages

Sample Fallout Warning Messages for the Post-Nuclear Detonation Period

One of the most important tasks for jurisdictions is to develop pre-scripted, pre-vetted, and scientifically based fallout warning messages tailored to their specific community. Below are a series of provisional public information statements developed by Los Angeles County and reproduced by the National Council on Radiation Protection and Measurements (NCRP).1 Together with Formula for Writing an Effective Message for Postdetonation Public Warning, the statements serve as a starting point for a community to develop its postdetonation fallout warning messages. Messages on fallout protective guidance can adopt the form modeled in the formula and draw content from the samples included below, with input from the jurisdiction’s radiation control and public health experts. Ideally, draft messages should be tested with small representative groups in a community to identify words or concepts that might be confusing and, in general, to get feedback on how warning messages might be made more effective for area residents.

IND*: Public Information Statement No. 1: Can be used immediately after the explosion, as soon as the fire department arrives and detects radiation and it appears to have been a nuclear terrorism incident. 

IND: Public Information Statement No. 2: Can be used when additional information is available. 

IND: Public Information Statement No. 3: Can be delivered within a few hours of the incident. 

IND: Public Information Statement No. 4: Can be used when evacuation of designated areas is recommended.

*IND = Improvised nuclear device


National Council on Radiation Protection and Measurements (NCRP). Responding to a Radiological or Nuclear Terrorism Incident: A Guide for Decision Makers. NCRP report no. 165. Bethesda, MD: NCRP; 2010, pp. 128-129.



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