I thought this was neat. Even has info for my little Lake Grapevine.
http://www.sailflow.com/
another cool site
Tom
1981 Endeavour 43 s/v Pearl Lee
Former 1976 Columbia Payne 9.6 s/v Gin Rhumby
Former 1979 Chrysler 26, s/v Copacetic
http://www.asswhaffleyachtclub.net
http://www.svpearllee.com
1981 Endeavour 43 s/v Pearl Lee
Former 1976 Columbia Payne 9.6 s/v Gin Rhumby
Former 1979 Chrysler 26, s/v Copacetic
http://www.asswhaffleyachtclub.net
http://www.svpearllee.com
My understanding is that is simply what the computer modeling forecast for wind speed. The graph lets you see recent actual vs forecast. That way if you're looking at the forecast you have some idea of it's recent accuracy.
Tom
1981 Endeavour 43 s/v Pearl Lee
Former 1976 Columbia Payne 9.6 s/v Gin Rhumby
Former 1979 Chrysler 26, s/v Copacetic
http://www.asswhaffleyachtclub.net
http://www.svpearllee.com
1981 Endeavour 43 s/v Pearl Lee
Former 1976 Columbia Payne 9.6 s/v Gin Rhumby
Former 1979 Chrysler 26, s/v Copacetic
http://www.asswhaffleyachtclub.net
http://www.svpearllee.com