These products must be FTP'd by GTS users . These separate files were generated for internal server use. They are available for infrequent retrieval by those who wish to obtain a finite set of specific information. The original source meteorological bulletins are also available . Only the last received is made available.
Older information is over-written with the latest information.
Files are created at specific time intervals and all data available in the telecommunications switching system at file creation time are included in each file. The majority of our human readable text warnings, forecasts and observations are downloadable for viewing using standard web browsers. The service is provided on two major data providing servers. One server URL is weather.noaa.gov which operates the Internet Weather Source, abbreviated as IWS . The other server URL is weather.gov which operates the Interactive Weather Information Network, abbreviated as IWIN .