that was a lesson learned. i'm concerned, however, that they've gotten complacent. >> already states of emergency in st. bernard, saint charles, jefferson and plaquemines parish. >> now tropical storm barry is moving very slowly. that slow movement is one reason the weather service has issued an excessive rainfall notice. it's only been used two other times for hurricanes florence and harvey. let's get out to meteorologist derek van dam live in the weather center. derek, this thing is moving at a snail's pace. >> we can walk faster than it's moving now, boris. in fact, the flooding is the point that we are trying to drive home. we don't want people lost in the minutia of whether it will make landfall. 24 is a potential flood issue and in fact the weather prediction center has a high