Which Lake St Clair were you on Sunday?
The kinda heart-shaped one east of S.E. Michigan
We went out from 10 Mile east past the St Clair light, basicly the middle of the lake around 1pm. Winds were 18 to 22 with a gust to 30. Around 5pm it slowed down to about 15 for about a 15 minutes and then picked back up to 18 to 22.
We were north and west of the St. Clair light the entire time. We were out from about 14:00 thru 17:00 or so (not incl. motoring time in and out of Black Creek, etc.). We never saw anything approaching 20 kts, on puffs or otherwise. The St. Clair Buoy (which I think
is the St. Clair light) said winds during that time were pretty-much steady at 12-15 kts, which is about what I would've guessed.
Before and after the sail, we were in and around the north end of Venetian. Didn't look anything like 20 kts, much less gusts to 30, then, either.