Actually it looks more like the wind is going to be shifting rather abruptly.....from S/SE to N/NW and their computer model is giving a weird data stream for that time period.....if you check WindGuru
http://www.windguru.com/int/index.php?sc=85670 they show it turning to the East and picking up.
Either way it looks lumpy and nasty.....won't catch me out there.......be careful should you choose to go.