Solar flare activity on UT day 05-Jun is expected to be at R2 levels, with a chance of R3. S0 solar radiation storm conditions are expected. The solar wind speed is expected to be moderate to strong becoming strong to very strong. G2 geomagnetic conditions are expected, with a chance of G3. Global HF radio propagation conditions are expected to be mostly normal becoming fair to poor. Maximum Usable Frequencies (MUFs) in the Australian region are expected to be near predicted monthly values. Shortwave fadeouts are probable.