Across
- 4. - The transition zone between two distinct air masses. The basic frontal types are cold fronts, warm fronts and occluded fronts.
- 5. LEVEL The altitude in the atmosphere where the temperature equals 32F.
- 8. A 1-D process in which higher momentum air moves into lower momentum air.
- 10. DEVIL- A small, rapidly rotating wind that is made visible by the dust, dirt, or debris it picks up. Also called a whirlwind, it develops best on clear, dry, hot afternoons.
- 11. CLOUD (CU) - A cloud in the shape of individual detached domes, with a flat base and a bulging upper portion resembling cauliflower.
- 12. - Less than 4/10 opaque cloud cover, no precipitation, and no extremes in temperature, visibility or winds
- 13. - The historical record of average daily and seasonal weather events.
- 14. - High flow, overflow or inundation of a normally dry area which causes or threatens damage.
- 15. Rain - Cloud or rain droplets containing pollutants, such as oxides of sulfur and nitrogen, to make them acidic.
- 19. - Water droplets which are suspended in the air near the Earth's surface and causing reduced visibilities.
- 20. - The formation of thin ice crystals on the ground or other surfaces in the form of scales, needles, feathers, or fans. Frost develops under conditions similar to dew, except the temperatures are colder.
- 23. - Sky condition of less than 1/10 cloud coverage.
- 24. MASS - A large body of air having similar horizontal temperature and moisture characteristics.
- 25. SNOW - Wind-driven snow which reduces surface visibility.
- 27. A 2-D process in which airstreams move toward each other at some angle.
- 29. - Wind speeds from 39 to 54 mph (34 to 47 knots).
- 31. - Precipitation of small balls or other pieces of ice (hailstones) falling separately or frozen together in irregular lumps. (Typically associated with thunderstorms and surface temperatures above freezing).
- 32. - refers to the spreading out of winds.
- 35. CLOUD - A rotating column of air forming a pendant from a cumulus/cumulonimbus cloud with circulation not reaching the ground.
- 37. - a disruption of the atmosphere that usually refers to a low pressure area, cool air and inclement weather.
- 38. - A violent rotating column of air, usually forming a pendant from a cumulonimbus cloud with the circulation reaching the ground. It nearly always starts as a funnel cloud and may be accompanied by a loud roaring noise. On a local scale, it is the most destructive of all atmospheric phenomena.
- 39. - Fairly uniform precipitation composed exclusively of fine drops very close together. Drizzle appears to float while following air currents; however unlike fog droplets, it falls to the ground. Drizzle drops are too small to disturb appreciably still water puddles.
- 40. - Moisture that has condensed on objects near the ground, whose temperatures have fallen below the dewpoint temperature.
- 41. A 2-D process in which airstreams spread apart.
Down
- 1. - The temperature to which the air must be cooled for water vapor to condense.
- 2. EFFECT The warming of the atmosphere by the trapping of earth's longwave radiation being radiated to space. The gasses most responsible for this effect are water vapor and carbon dioxide.
- 3. - the process of a liquid changing into a vapor or gas.
- 6. SNOW - In the Inland Northwest, mountains above 3000 feet - 8 to 12 inches in 12 hours or 12-18 inches or more in 24 hours. For the valleys and Basin below 3000 feet - 4 inches in 12 hours and 6 inches in 24 hours.
- 7. - An area of low pressure around which winds blow counterclockwise in the Northern Hemisphere. Also the term is used for a hurricane in the Indian Ocean and in the Western Pacific Ocean.
- 8. - a temperature scale in which zero is the freezing point of water and one hundred is the boiling point.
- 9. -The amount of water vapor in the atmosphere. (See relative humidity).
- 13. FRONT - The boundary between a cold air mass that is advancing and a relatively warmer air mass. Generally characterized by steady precipitation followed by showery precipitation.
- 14. SCALE - System developed by Dr. Theodore Fujita to classify tornadoes based on wind damage. Scale is from F0 for weakest to F5 for strongest tornadoes.
- 16. FLOODING - Inundation of coastal areas from waves and storm surge.
- 17. DUST OR SAND - Small particles of dust or sand which are caused by strong winds blowing over dry ground, that has little or no vegetation
- 18. AIR - a mass of very cold, dry air that usually originates over the Arctic Ocean north of Canada and Alaska.
- 20. - the standard scale used to measure temperature in the United States; in which the freezing point of water is thirty-two degrees and the boiling point is two hundred and twelve degrees.
- 21. - A category. Usually refers to a category of precipitation given by the forecast models.
- 22. - When the temperature at or near the surface is expected to be 32 or below, during the growing season. Adjectives, such as "killing,' "severe," or "hard," are used when appropriate. A freeze may or may not be accompanied by the formation of frost.
- 25. - A storm lasting about 3 hours or longer with sustained winds 35 mph or greater with frequent gusts to 35 mph or greater; and considerable falling and/or blowing snow frequently reducing visibilities to less than 1/4 mile.
- 26. - a layer or coating of ice that is generally smooth and clear, and forms on exposed objects by the freezing of liquid raindrops.
- 28. RAIN (DRIZZLE) - Rain (drizzle) which freezes on contact to produce a coating of ice on the ground and other exposed surfaces.
- 30. - the mass of air surrounding the earth and bound to it more or less permanently by the earth's gravitational attraction.
- 32. FOG - A cloud, with its base on the surface, which reduces visibility to 1/4 of a mile or less.
- 33. - A brief sudden increase in wind speed. Generally the duration is less than 20 seconds and the fluctuation is greater than 10 mph.
- 34. WINDS - A counterclockwise change in wind direction. Backing winds with height are indicative of cold air advection
- 35. FLOOD - A flood that occurs within a few hours (usually less than six) of heavy or excessive rainfall, dam or levee failure
- 36. FREEZE - freeze where vegetation is killed and the ground surface is frozen solid.
- 40. SNOW - An uneven distribution of snowfall/snow depth caused by strong surface winds, but does not reduce surface visibility.
- 41. STORM - an area where high surface winds have picked up loose dust, reducing visibility to less than one-half mile.
- 42. the state of the sky when 9/10ths or more of the sky is covered by clouds.