Solar flare activity on UT day 15-May is expected to be at the R0 level, with a chance of R1. S0 solar proton conditions are expected. The solar wind speed is expected to be moderate, with an increasing trend. G1 geomagnetic conditions are expected, with a chance of G2. HF radio propagation conditions are expected to be normal to fair. Maximum Usable Frequencies (MUFs) in the Australian region are expected to be near predicted monthly values to 15% depressed.