Solar activity will likely continue at moderate levels with isolatedM-class flares through September 6 due to the combined flarepotential of Regions AR4197 and AR4207. An enhanced solar wind regime is anticipated to continue intoSeptember 6 due to a positive polarity coronal hole high speedstream. "In further developments, the Earth will be affected by anothersurge of solar wind on September 6. But this should come as nosurprise, as it is a regularly recurring passage of the Earththrough a stream of intensified solar wind linked to active areas onthe Sun. For more information concerning shortwave radio propagation, seehttp://www.arrl.org/propagation and the ARRL Technical InformationService web page at, http://arrl.org/propagation-of-rf-signals.