Due to how ArcGIS works for KML files, it updates no more often than every half hour.
The radar data in this product comes from onboard radar from NOAA's WP-3D Orion hurricane hunter aircraft. It is viewable in Google Earth as soon as our site receives it, soon after being made available by NOAA. The Google Earth file will contain only the latest radar imagery from the particular aircraft you are viewing data for. You can either choose to download a Google Earth file that will fly to the latest radar imagery for that aircraft upon update or download the file that does not automatically fly to the latest radar image upon update.
The Google Earth file contains a network link for each specific NOAA aircraft. Make sure you load the proper network link in order to view data from the specific aircraft that you are looking to view radar data for.
Radar data will often appear here sooner than the rest of our recon system. Due to the way radar data is downloaded from NOAA in the main part of our recon system, more overhead is required in order to process directory listings of the radar scans. We therefore check for radar data less often there.
This radar product currently only downloads the latest radar scan from NOAA when it updates. The Google Earth file for each aircraft that loads in the network link is mirrored directly from NOAA. The overlays have been automatically been created and positioned by NOAA. If anything changes in regards to how this data is made available from NOAA, this mirror may fail and the network link may either not load or display old data. This should be treated as an experimental product. Please try to visually verify that a radar overlay has been placed correctly. If in doubt over the placement of an overlay, please ignore it.
Unless the format of the file changes, you will see the date, in Zulu time, of the radar scan in the format "YYYY-MM-DD HH:MM:SS". (Year-Month-Day Hour:Minute:Second)
The NOAA radar data that appears in the main part of our recon system updates at a different interval than the radar data here. The data here is meant to provide data in as close to real time as possible. If you would like to view data other than the latest radar scan available, please visit our recon archive to see if the older radar imagery you want is available.
Radar imagery must contain an attribution to the "NOAA-AOC" ( NOAA Aircraft Operations Center ) or "NOAA" if used elsewhere.