BOM Colour Mean Sea Level Pressure
http://www.bom.gov.au/australia/tides/#!/nsw-dangar-i
http://www.bom.gov.au/nsw/forecasts/sydneywaters.shtml
http://www.seabreeze.com.au/graphs/nsw.asp
http://www.willyweather.com.au/nsw/central-coast/hawkesbury-river--little-patonga.html