It's a matter of timing and wind . . .
A hurricane watch indicates the possibility that you could experience hurricane conditions within 48 hours. When a hurricane watch is issued for our surrounding coastal area, it should trigger your family's disaster plan and protective measures should be initiated, especially those actions that require extra time such as an evacuation.
A hurricane warning indicates that sustained winds of at least 74 mph are expected within 24 hours or less. If a hurricane warning is issued for our area, Once this warning has been issued, your family should be in the process of completing protective actions and deciding the safest location to be during the storm.
Both watches and warnings are important, but warnings are more urgent.
I've heard a lot of people say preparing for Isaac was a waste of time. No, we didn't get what we thought we would in terms of storm conditions, but . . . I look at it as a needed practiced drill . It's been awhile since we've had to consider our hurricane plans, and I think Isaac made for a nice refresher course.