The 27-day Space Weather Outlook Table , issued Mondays by 1500 UTC, is a numerical forecast of three key solar-geophysical indices; the 10.7 cm solar radio flux, the planetary A index, and the largest daily K values. A complete summary of weekly activity and 27-day forecasts since 1997, plus an extensive descriptive, are online as The Weekly.
The Preliminary Report and Forecast of Solar Geophysical Data (referred to hereafter as the Weekly) is compiled and issued every Monday. This publication is produced in Boulder, Colorado, jointly by the National Oceanic and Atmospheric Administration (NOAA) Space Weather Prediction Center, formerly the Space Environment Center, and the Air Force Weather Agency (AFWA). It is a continuation of the weekly reports that began in 1951 and were issued by the High Altitude Observatory and NOAA and/or its predecessors. The current series began with serial number PRF 001 on 09 September 1975. The contents of the Weekly have no copyright or other restrictions. Comments concerning the content or improvements to the Weekly are invited. More details are available about forecast products in the Users Guide.
Short descriptive text files of Weekly products, as well as the product files themselves are available.
Further information on the data in the weekly can be found in the Users Guide to The Preliminary Report and Forecast of Solar Geophysical Data