A Watch means that there is potential for the event to occur. No action needs to be taken when watches are issued, however community members should keep up to date in case the Watch becomes a Warning.
An Advisory means that the event is either imminent or occurring, however it is less severe than a Warning. The event is a public inconvenience and creates a general hazard.
A Warning means that the event is either imminent or occurring. Community members should be prepared to take immediate protective action.