I don't suppose the red line could indicate the time could it?
Naah,.. I'm sure it must be completely random.
Well brown arrows for "sh!t ya pants wind"
Maybe red line has something to do with swell period? 
lol.
Not immediately obvious is it...
The red line is "now" .. unlike all the live wind graphs, the "current" tide data is availble via forecast, so it's great for when you're going for a surf to see what the tide will be doing over the next few hours.
Left of red line = history
red line = now
Right of red line = future
