I've had it with trying to plan my diving with the weather forecast. When I lived in Canada I spent some time trying to figure out how accurate the weather forecast is. Summer is very short there so it was important to plan activities ahead of time. After observing the relationship between the forecast and what actually happens I figured out that the forecast is simply useless. It's useless because they're wrong %50 of the time. If they were wrong %100 of the time then you can just plan on the opposite but this is not the case. So I gave up on the forecast.
Seeing as how the marine forecast is theoretically more important, unforeseen bad conditions can have a very serious effect, I thought it would be more accurate. After keeping an eye on the marine forecast over the last couple of years I came to the realization that it is not. Take today for example. Yesterday the forecast said it was going to be like 3-5ft waves. Today they changed it and it's presently this:
QuoteToday
North winds 10 to 15 knots. Seas 2 to 4 feet near shore and up to 5 to 7 feet in the Gulf Stream. Intracoastal waters a light chop.
Still nothing like what you see in the pic. And based on yesterday's conditions I thought that it might just be this way today. Funny thing is that yesterday's prediction was accurate. So again it's about %50 accuracy which is nowhere near as useful as checking the webcam first thing in the morning and deciding if I'm going diving right then and there.