As I type this, the highest wind gust so far today was 17 mph at 6:03 a.m. That's a strong wind, given my wind anemometer is only 5 feet above ground. I decided it was about time I researched an adjustment factor to convert the wind speed reported by my anemometer at 5 feet above ground to the approximate average 60 foot height of the hemlocks surrounding the weather station. Best as I can determine, converting calculus formulas to a simple "rule-of-thumb," the factor I arrived at is 1.33. So the 17 mph gust at 6:03 a.m. this morning converts to about 23 mph. A comparison with the wind data provided by the two closest professional grade weather stations -- downtown Berlin and West Grafton -- seems to validate this factor.
Take a look at the Plateau weather charts from yesterday, the wind gusts really ramped up through the evening. You can access these graphs at any time, using the pull-down menus for the day of interest by clicking here.
Adjusting Wind Speeds (Aerostar Wind Turbines)
Wind Gradient (Wikipedia)