Nature Note:Two Winds

While lower level winds blew cirrus clouds from the north,upper level winds blew cumulus clouds from the south,creating quite a spectacle.The cold lower winds and clouds were a reminder of winter just past,and the southern upper winds and clouds heralded the spring just arrived.There had been a thunderstorm earlier in the day.Now the sun was out and the clouds raced past one another in different directions at different heights.It was a rare instance of air masses made graphic,of seasonal change made visible.