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Across 2. A forecast issued by the National Weather Service indicating that a specific weather event is actually occuring. 5. The amount of water vapor in the air. 8. A cloud on the ground that reduces visibility. 9. Light rain consisting of water droplets that are very small. 12. A water substance in the solid phase. 13. It describes the average weather conditions in a certain place or during a certain season and change only over hundreds of years. 15. Instrument used to measure the air temperature. 19. An intense winter strom with winds of 35 m.p.h. or higher with falling and/or blowing snow to reduce visiblity below 1/4 mile for atleast three hours. 21. The weight of air pressing down on Earth. 22. An intense storm with swirling winds up to 150 miles per hour. 24. It begins as a funnel cloud with spinning columns of air that drop down from a severe thunderstorm. 27. Visible air pollution in urban areas. 28. Caused by the reflection and refraction of sunlight passing through raindrops. 31. The movement of air relative to the surface of the earth. It's considered to be severe if 58 m.p.h. or greater. 32. The shaking or movement of a portion of the Earth's surface. 36. Rain falling from the sky causing puddles to form on the ground. 37. A mixture of liquid and frozen precipitation. 38. When a widespread layer of clouds covers all of the sky. 39. The explosive sound of air expanding as it is heated by lightning. 40. A very light shower of rain just barely wetting the ground.

Down 1. Liquid precipitation in the form of water drops that fall from clouds for several hours. 3. The description of warm and humid air. 4. An instrument that determines the direction from which the wind is blowing. 6. Solid precipitation in the form of ice pellets from when raindrops, originating in warmer air aloft, freeze as they fall through subfreezing air near the surface of the Earth. 7. Measure the amount of rain that has fallen over a specific time period. 10. The measurement of how hot or cold something is. 11. Water droplets so small that they are floating in the air. 14. A layer of gases surrounding a planet. 16. An enormous and very hot spark of electricity produced by thunderstorms. 17. White crystals that form on a surface, like the ground or leaves of a plant. 18. A period when a regiod has a lack of rainfall. 20. The mixture of gases, which form the atmosphere of the Earth. 21. A weather instrument that measures the wind speed. 23. Any disturbed state of the atmosphere that creates unpleasant weather like rain, lightning, thunder, hail, snow, sleet, and freezing rain. 25. It's responsible for most of the Earth's weather, even though it's 93 million miles away. 26. When the sky has no clouds. 29. An instrument that measures air pressure. 30. It's snow or ice on the ground that has been reduced to a soft, watery mixture by rain or warm temperatures. 31. Describes the condition of the air at a particular time and place. 33. It results from days of heavy rain and/or melting snows, when rivers rise and go over their banks. 34. A light wind. 35. A forecast issued by the National Weather Service indicating that conditions are favorable for a particular weather hazard. 36. Precipitation that is composed of white ice crystals that fall from clouds.