June 9th, our hourly average winds were 50-70 mph from midnight until 6 am then were 40-55 mph until 4 pm when they decreased to 30-40 mph. But, down lower, they were likely a bit less than these values. But the guess at 50 mph was pretty good, most people overestimate the winds.
As far as the Jewell Trail, there was no rearranging that we we're made aware of. What it sounds like is, towards the bottom, you either missed the sign, or it fell down as you continued down the Jewell Link. The Jewell Trail cuts left shortly after you cross Clay Brook. The Jewell Trail and Ammonoosuc Trail start at the Cog base while the Jewell Link and Ammonoosuc Link trails start/end at a lot about a mile or two west of (or "down" the road from) the Cog base station. But don't feel bad, you're not the first to get turned around down there. And now, when you return, you know what not to do. I like to call those moments in hiking "learning experiences".
Staff Meteorologist/Night Observer, KMWN (Mt Washington Obs., NH)