These links and pictures get updated several times a day. The Solar Flux Index is a gauge of solar particles and magnetic fields reaching our atmosphere.
Higher numbers mean more solar wind is reaching the earth.
Falling numbers mean improving conditions particularly in northern latitudes and areas where aurora activity can occur. Use this as a reference for general conditions on the bands. The brightness of the storms seen on these images is an indication of their size and energy output. Major storms will effect HF propagation shortly after seen. This trend should continue into the new millennium.