The National Hurricane Center (NHC) updates its hurricane advisories and forecasts at least every six hours, specifically at 5 AM, 11 AM, 5 PM, and 11 PM Eastern Daylight Time (EDT) for the Atlantic and Eastern Pacific basins. These updates include detailed public advisories, forecasts, and discussions about tropical cyclones
. When coastal tropical storm or hurricane watches or warnings are in effect, the NHC issues intermediate public advisories every three hours to provide more frequent updates during critical periods
. Additionally, special advisories may be issued at any time if there are significant changes in the cyclone's status or warnings, ensuring timely communication of urgent information
. In summary:
- Regular updates every 6 hours (5 AM, 11 AM, 5 PM, 11 PM EDT)
- Intermediate updates every 3 hours during coastal watches/warnings
- Special updates as needed for significant changes
This schedule ensures that the public and emergency managers receive timely and accurate information about tropical cyclone activity
