On 10/4/2015 6:21 AM, Sam Seagate wrote:

Do you have a ridge vent? Driving rain can exploit this "hole" (slot) in
your roof.

Thanks. I read the others posts here along with yours. There is not a chimney
or commode vent pipe above the area, but a ridge vent was made when the roof
was reapplied ten years ago. Previous to that, there was no roof vent.
Chances are, it may have come from that. In addition to the rain, we've also
been having lots of gusty winds so it could be that the wind drove the rain
in/thru the venting.

Exactly. A neighbor had "evidence" of a leak just inside the *exterior*
wall of his home. Water had, in fact, been driven into the ridge vent
and traveled down the rafters until it got to the outside wall -- where
it could go no further and decided to manifest.

Of course, you may have a leak around a nail hole, etc. But, don't rule
out the vent as a "non leak" source of problem.