Something that has come up in the epic Boston discussion is the possible disparity between weather station data and the actual conditions experienced on the ground. Curious, I checked the recorded wind readings for the ACC Championships in Durham, NC vs. local climate data from the nearby Raleigh-Durham airport. The result was interesting, to say the least.
The NOAA forecast for the day was for 15 mph winds. The recorded wind was an average of 5.9 mph with gusts of 17-22 mph.
For the ACC meet, dozens of track-level wind readings had a high of 1.8 m/s (4mph) which is still under the AVERAGE airport reading, and track data averaged under 1 m/s (<2mph) with many 0.0 readings during the jumps, or less than 20% of the recorded average for the time period.
Of course, stadium configuration greatly affects wind readings, just as trees, hills, buildings, even large numbers of people can on the roads. I would be interested in other data based on track measurements if anyone would like to pursue this- at the very least it suggests that wind readings 10m off the ground at an airport can be very different than that experienced on the ground.