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Read. Understand. Apply.
The Warn Room blogs apply 70 years of research to the practice of alerts and warnings. We show how evidence-based changes to message content, style, and structure can create more effective warnings.


Shelter in Place and All Clear messages: closing the communication loop
Let's have a chat about closing the communication loop. I'm talking about the message that tells the public the situation is "all clear" and they can end the actions you recommended. In the warning research space, we've taken to call these "post-alert messages" because sometimes that second message may not be able to state conclusively that the area is safe, but it can provide an update on an investigation, a situation, or an environment and tell people how to go about thei

Jeannette Sutton
4 hours ago


Post alert messages for false alerts
Photo by Cory Lum, AP Post-alert messaging is getting a lot of my attention these days. For those unfamiliar with the term "post-alert message," these are the equivalent of "all clear" messages. But instead of simply saying "all clear" or "orders lifted", a post-alert message is written in plain language with a focus on communicating safety. We started thinking about the importance of these messages when we noticed how they are filled with jargon that implies safety rathe

Jeannette Sutton
Sep 29


Tips to write an "All Clear" message that includes Plain Language
All clear messages are an important part of the communication lifecycle for alerts and warnings. When an alert is issued, it opens up a "conversation" by telling people about a hazard, its impacts, the location of the impact, and what people should do to protect themselves. Ideally, if a person is at risk, they will engage in protective action and remain safe until they are instructed to do otherwise. This can come as an additional notification as the event is ongoing, or

Jeannette Sutton
Sep 8


Lifting the evacuation - who do you tell and how?
Determining how to get a message to an evacuated population is a challenge; issuing a complete message can help to reduce message confusion.

Jeannette Sutton
Mar 6
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