Weather Forecasting Notes Name:________________ 1. Weather is defined as: ___________________________________________. * These could be forecast (predicted) based on ____________________________________________________. * The study of weather and the atmosphere is called _________________________. 2. __________________________________is primarily concerned with large-scale weather systems. The forecast weather map is for a common ________________. 3. List up to eight (8) types of information typically included in a weather forecast: 1 2 3 4 5 6 7 8 4. Horizontal movements of air near the surface are known as _______________. In ________________ pressure cells, air flows in and up, converging at the surface and diverging aloft. In ___________________ pressure cells, air flows down and out, converging aloft and diverging at the surface. 5. Warm air, tends to have less __________________________, and thus tends to rise; while cool air tends to have greater __________________________, and thus tends to sink. 6. The pressure gradient force of winds will occur when there is a difference in pressure between ________________________ or lines of equal pressure. When these are close together, it represents ____________ type of winds, when these are farther apart, it represents ______________ type of winds. 7. Clouds form when __________________ rises, and _____________________ condenses to form a cloud. This occurs when the air aloft reaches the _______________________ or temperature at which water will form dew from the air. 8. The two ways that precipitation may form are: 9. The visibility through the air is defined as the __________________ by which an object can be clearly viewed and is affected by both _________________________ and _____________________________. 10. In the United States, the governmental agency responsible for gathering and disseminating weather related information is the ____________________________. 11. The three basic stages to weather forecasting are: 12. List at least three examples of data collecting methods used for making weather forecasts: 13. Draw an example of a weather station symbol reading: 14. Quality control of weather data is important because:________________________________________________________. 15. Most forecasters use a “now cast” model to start their forecasts. This starting point from initial observations is called the ____________________________, or the starting point for the numerical simulation. 16. The three basic forecast methods, advantages, and disadvantages are: Forecast Method Advantages Disadvantages: 17. List at least three of the major U.S. Weather Forecasting Models: 18. Describe a major problem with individual modeling forecasts: 19. When meteorologists use a variety of models to create a forecast, it is known as: ______________________________ forecasting. 20. Human interpretation of weather models and data is important because: 21. List at least three sources for reliable current weather information: