We have no restrictions on the use of the data our site creates. You do not need to inform us before you begin using the data our site generates.
You will need a commercial license from Google in order to display Google Earth and Google Maps data if you intend to broadcast the data on television. As of this information being posted, this license can be acquired here for free from Google.
We require no credit of any kind when you use our data. In fact, we ask that you not credit our site. We have a few reasons for that request. Our site is not really designed to be used by the general public. For the most part, our site is designed for use by weather professionals and hobbyists. Another reason is due to bandwidth. This site is not-for-profit, so we want to make sure to keep our costs low. This means that we do not want a lot of traffic coming to our site. The biggest reason is due to the fact that data should be interpreted by professionals. Model data is best used when a meteorologist talks about how the data is only one tool that goes into forecasting. People should not make their own determinations about where a storm will go based on model data. Recon data is raw and often undergoes little to no review before being transmitted. Our systems contain and link to products that can contain errors, can be unavailable at times and can also be misleading. For these reasons, it is better that the general public only be shown the data when a qualified person is there to explain it.
The best track data, model data and center fix data on our site comes from the Automated Tropical Cyclone Forecasting System (ATCF). Additional model data comes from the European Centre for Medium-Range Weather Forecasts (ECMWF). Our site downloads the latest files from here and processes the data to be displayed visually using Google Earth, Google Maps and Adobe Flash diagrams. ECMWF data comes from here. As of this information being posted, publicly accessible (WMO Essential) data from the ECMWF, including the tropical cyclone trajectory data our system uses, is listed as being "available to the public and their use is unrestricted (including commercial use)".
The recon data we use is downloaded directly from raw data directories at the National Oceanic and Atmospheric Administration (NOAA) (ftp or http) and from the National Hurricane Center's Reconnaissance Data Archive. The raw data is processed by our site's reconnaissance system for display in Google Earth and Cesium.
If you have any other questions, please contact us here.