1.   Air rises when it warms.

2.   As hot, humid air rises from the ground, it cools, leading to condensation and puffy clouds.

3.   As sultry air rises over more comfortable air in the northeast Plains, more thundershowers will develop.

4.   As warm air rises up and over a dome of cold air, snow will develop from northern Minnesota to northern Michigan on Thursday.

5.   As the humid air rises over a dome of very chilly air covering the northern states, a mixture of snow, sleet and freezing rain will form.

6.   As the moistened air rises over the mountains of New England, a little light snow is likely.

7.   As the warm air rises, the cooler air replaces it.

8.   As this warm air rises up and over a layer of cold, dense air, patches of snow and ice will develop in the Northern Plains.

9.   As warm air rises, it flies out of any available opening, including windows, doors and a long list of seams, cracks and penetrations.

10.   As warm, moist air rose, thunderstorms developed.