On UT day 16-Mar solar activity is expected to be R0 with a chance of R1. S0 solar radiation storm conditions are expected. The solar wind speed is expected to be initially strong, slowly declining to moderate as the recent influence of a coronal hole high speed wind stream abates. G0 geomagnetic conditions are expected. HF radio propagation conditions are expected to be fair to normal, with fair conditions during local night hours for the southern Australian region. Maximum usable frequencies (MUFs) in the Australian region are generally expected to be near predicted monthly values with southern Australian region MUFs 15% depressed after local dawn this morning.