Ok Here's the problem....
From the location of these stations its seems likely that:
Melville Waters readings will be spot on for Crawley
. It will be too optimisic for Melville Beach
during Southerly winds, but is more accurate as the wind swings West, and will be accurate
for W to WSW
Mandurah readings will be too pesimistic
for Avalon and the Estuary during anything that doesnt have some Northerly component (just about 99% of the time) but will be accurate if the wind swings North
. In particular, for Southerlies and Easterlies, Mandurah readings could easily be pesimistic by 10 knots or more
.
