An arctic cold front will continue to plunge southward through the Plains, Mississippi Valley and the Northwest quadrant of the U.S. on Sunday. As a result, widespread frigid and well below normal temperatures are expected along with dangerous wind chills. Meanwhile, heavy rain and flooding are possible for the Gulf Coast states and much of Hawaii. Read More >
All TOC data and products are stored for FTP access. The directory and file structure follows a common subdirectory and file naming standard. The types of directory trees are described in detail below to help locate specific data and model forecast product types. Review the General Guide before writing computer programs to access the files.