There are several charts and lists relating to radio propagation:
- Surface Barametric Pressure
- HF and VHF Propagation
- Southern Aurora Forecast
- Sun Spot Cycle
Scroll down for each one.
Surface Barometric Pressure and Rainfall
via BOM, http://www.bom.gov.au/australia/charts/viewer/index.shtml
HF, VHF Propagation
via HamQSL http://www.hamqsl.com/solar.html
Southern Aurora Forecast
via NOAA, http://www.swpc.noaa.gov/products/aurora-30-minute-forecast
Solar Sun Spot Cycle
via NOAA, http://www.swpc.noaa.gov/products/solar-cycle-progression