"Paul Lynch" wrote in message
news:GnPle.4510$%Z2.1986@lakeread08...
Unless there are specified takeoff minimums, a flight conducted under Part
91 does not have any departure weather requirements, only
destination/alternate requirements. That is where judgement comes into
play. You can legally takeoff with only enough viz to see the centerline.

Actually, there isn't even any requirement to be able to see the centerline.
My instructor once had me take off under the hood, to show that a
zero-visibility departure is possible. (He didn't recommend doing it for
real, of course.)

--Gary