Why is this so hard for people to understand? And it doesn't mean you think this is TEOTWAWKI. It just means that you think there is going to be some fallout from this, and you are going to take measures to minimize the effect on yourself and those you love. Even if the only fallout is that people will panic and act irrationally, that's something to prep for.
The only people who panic are the people who do not believe the warnings. They will panic when it arrives to their city.
That is probably the most dangerous situation.