The National Digital Forecast Database (NDFD) contains a seamless mosaic of digital forecasts prepared by NWS WFOs and NCEP. These forecasts consist of various sensible (e.g., temperature and sky cover) and derived (e.g., apparent temperature and relative humidity) weather and are used by NWS customers and partners to create text, graphical, gridded, and image products. The NWS currently provides XML-encoded NDFD forecasts to its customers and partners via the World Wide Web (WWW) using a web service based on the Simple Object Access Protocol (SOAP). These XML forecasts are encoded in Digital Weather Markup Language (DWML), a dialect of XML. This fea-ture is enjoying considerable success. The NDFD provides the NWS with an unprece-dented opportunity to automate and improve tabular products like SCS/TAV/CCF using features of both the NDFD and XML.
This paper will focus on steps to modernize and improve upon the current tabular product suite (SCS/TVL/CCF) by introducing three new XML products (Forecast in XML- FoX, Observations in XML - ObX, and Temperature Extremes in XML - TEX). If these new products prove to be successful, the NWS will explore the possibility of re-placing one or more of the legacy text products. XML products have a decided advan-tage over their tabular counterparts. In general, XML allows NWS customers and part-ners the flexibility to capture some or all of the data being delivered in the product while formatting the data as they choose. Additional cities, new weather elements, or new time projections all can be added in the future with minimal software development and mini-mal impact to our customers and partners.