National Hurricane Center Advisory Schedule
When a storm threatens, the National Hurricane Center (NHC) begins issuing hurricane advisories.
Full hurricane advisories are issued at:
5 am EDT, 11 am EDT, 5 pm EDT and 11 pm EDT
When a Watch or Warning is issued, intermediate advisories are initiated, usually at 8 am, 2 pm and 8 pm.
Just what does a watch mean? What does a warning mean?
TROPICAL STORM
WATCH A tropical storm watch is issued when tropical storm conditions, including winds from 39 to 73 miles per hour (mph), pose a possible threat to a specified coastal area within 48 hours.
WARNING A tropical storm warning is issued when tropical storm conditions, including winds from 39 to 73 mph, are expected in a specified coastal area within 36 hours or less.
HURRICANE
WATCH A hurricane watch is issued for a specified coastal area for which a hurricane or a hurricane-related hazard is a possible threat within 48 hours.
WARNING A hurricane warning is issued when a hurricane with sustained winds of 74 mph or higher is expected in a specified coastal area in 36 hours or less. A hurricane warning can remain in effect when dangerously high water or a combination of dangerously high water and exceptionally high waves continues, even though the winds may have subsided below hurricane intensity.