Solar activity on UT day 06-Apr 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 moderate to strong, declining over the UT day. G0 geomagnetic conditions are expected. HF radio propagation conditions are expected to be normal across the Australian region. Maximum Usable Frequencies (MUFs) in the Australian region are expected to be near predicted monthly values.