What does the confidence percentage mean?

Every weather window and condition in a brief comes with a confidence level. When Diorite says 70 percent, it means that on days like this, it has been right about 70 percent of the time.

How to use it

• Above 80%: plan normally, still keep a turnaround time
• 60 to 80%: start earlier and choose a clear decision point
• Below 60%: consider a simpler objective or a different day