Weather!

4. The state of the atmosphere at a place and time as regards heat, cloudiness, dryness, sunshine, wind, rain, etc.
8. The amount of water vapor in the air.
9. The process that occurs before precipitation.
11. The pressure exerted by the atmosphere.
13. Flat, hazy, featureless clouds of low altitude varying in color from dark gray to nearly white which may produce a light drizzle or snow.
14. A hygrometer consisting of a wet-bulb and a dry-bulb thermometer, the difference in the two thermometer readings being used to determine atmospheric humidity
16. A system of winds rotating inward to an area of low atmospheric pressure, with a counterclockwise (northern hemisphere) or clockwise (southern hemisphere) circulation
17. A storm with violent winds, a tropical cyclone

1. front A composite front formed when a cold front overtakes a warm front and forces it aloft; occlusion.
2. The boundary of the meeting a cold air mass to a stronger warm air mass.
3. Visible drops of water that fall from the clouds in precipitation.
5. Rain that freezes on its way to the ground and hits us as pellets.
6. A storm with thunder and lightning and typically also heavy rain or hail that normally occurs in the summer.
7. Rain, snow, sleet, or hail that falls to the ground.
10. A loud rumbling or crashing noise heard after lightning.
12. Water in its frozen form falling to the ground in light white flakes.
15. A dense cloud towering vertical cloud associated with thunderstorms and atmospheric instability.
18. The boundary of the meeting place of a warm air mass and a stronger cold air mass.