Weather Puzzle

3. A principal cloud type in the form of individual detached elements, sharp non-fibrous outlines, and vertical development.
5. A closed isobaric circulation in the atmosphere, with counter-clockwise rotation in the northern hemisphere.
7. Same as cloud except base of cloud is touching earth's surface.
8. Used in reference to thunderstorm intensity. Indicates strong winds and large hail.
12. The physical process by which a vapor becomes a liquid.
13. Absence of apparent motion of the air.
15. An elongated area of relatively low atmospheric pressure, the axis of which is called a trough line.
16. Affecting less than 20% percent of the area.
18. The chance that a prescribed event will occur.

1. A local storm produced by cumulonimbus clouds accompanied by lightning and thunder...often containing heavy rain...and sometimes strong winds and hail.
2. A violently rotating column of air, pendant from a cumulonimbus cloud observed as a funnel cloud.
3. The statistical collective of weather conditions over a specified period of time (i.e. usually several decades).
4. The state of the atmosphere, usually short term, with respect to its effects upon life, property and human activities.
6. A period of moisture deficiency, extensive in space and time.
7. A transition zone between two air masses of different density.
9. The process by which electromagnetic radiation is propagated through free space.
10. The transfer of energy within and through a conductor by means of molecular activity.
11. A measure of the water vapor content of the air.
14. A sudden brief increase in wind speed.
17. The visible aggregate of minute water droplets and/or ice particles in the atmosphere above the earths's surface.