S: (n) wind, air current, current of air (air moving (sometimes with considerable force) from an area of high pressure to an area of low pressure) "trees bent under the fierce winds"; "when there is no wind, row"; "the radioactivity was being swept upwards by the air current and out into the atmosphere"
S: (n) weather, weather condition, conditions, atmospheric condition (the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation) "they were hoping for good weather"; "every day we have weather conditions and yesterday was no exception"; "the conditions were too rainy for playing in the snow"
S: (n) phenomenon (any state or process known through the senses rather than by intuition or reasoning)
S: (n) process, physical process (a sustained phenomenon or one marked by gradual changes through a series of states) "events now in process"; "the process of calcification begins later for boys than for girls"