Solar activity on UT day 09-Aug is expected to be at the R1 level, with a chance of R2. S0 solar radiation storm conditions are expected. The solar wind speed is expected to be strong. G0-G1 geomagnetic conditions are expected due to the combined effects of a southern hemisphere coronal hole and ongoing CME arrival effects. HF radio propagation conditions are expected to be mostly normal, with the chance of mild degradations at high latitudes. Maximum usable frequencies (MUFs) in the Australian region are expected to be near predicted monthly values with the chance of mild depressions in the southern Australian region. Shortwave fadeouts are possible.