Space Weather Prediction Center

National Oceanic and Atmospheric Administration

USAF 45-Day Ap and F10.7cm Flux Forecast

45-day forecast of Ap and F10.7 prepared by the U.S. Air Force. Retransmitted by the Dept. of Commerce, NOAA, Space Weather Prediction Center

Space Weather Impacts On Climate
Space Weather and GPS Systems
Electric Power Transmission
HF Radio Communications

45-day forecast of Ap and F10.7 prepared by the U.S. Air Force. Retransmitted by the Dept. of Commerce, NOAA, Space Weather Prediction Center

The current day Ap forecast text file is available, as well as previous data text files.