Watchout for those sudden wind shifts like at about 5:10 pm. The anenometer falls into the lee of some wind shadow with west winds hence he sudden dropoff.
Everyone knows how to deal with a wind shift offshore if you are already riding a ways off the beach, right? They are not that uncommon with arriving cold fronts or winking out thermals around sunset. Best way to deal with it is to anticipate the shift through forecasts and watching for signs, but failing that, what do you do?
Reposted from HERE