Solar flare activity on UT day 29-May is expected to be at the R0 level, with a chance of R1. S0 solar radiation storm conditions are expected. The solar wind speed is expected to be moderate. G0 geomagnetic conditions are expected, with a chance of G1. HF radio propagation conditions are expected to be mostly normal. Maximum Usable Frequencies (MUFs) in the Australian region are expected to be near predicted monthly values.