NHC Active KML Feed
The NHC Active Keyhole Markup Language (KML)
feed is a compressed (KMZ) file – http://www.nhc.noaa.gov/gis/kml/nhc.kmz –
available for download that utilizes the "network link" functionality to display all of the active NHC KML/KMZ files
and can automatically update to look for refreshed and new data. This file can be viewed in
Google Earth and other KML viewing software.
Listed below are the KML/KMZ files currently found (when available) in the Active KML feed:
- Advisory Forecast Track
- Advisory Cone of Uncertainty
- Advisory Watches & Warnings
- Preliminary Best Track Points
- Storm Surge (Probabilities, Heights)
- 120h Wind Speed Probabilities (34kt, 50kt, 64kt)
Please see the NHC GIS page for more details on the individual files.
The 'nhc.kmz' file comprises of a single KML file (nhc.kml)
that is zipped and bundled into the KMZ. The bundled 'nhc.kml' file utilizes a NetworkLink to
reference a live frequently-updated file on NHC's web servers, available here:
The 'nhc_active.kml' file also consists of multiple NetworkLink calls to the current KML/KMZ files
on NHC web servers.
Listed below are past examples of the 'nhc_active.kml' file from the NHC KML feed and are
posted as a courtesy for developers and others interested in parsing these files.
Warning: format may change.
This is a protype and may not be available 24 hours a day, seven days a week.
Timely delivery of data and products from this service through the Internet
is not guaranteed, and you should not rely on this service to make life-threatening decisions.
If you have any feedback, please send questions or comments directly to