1. 16.3
Weather Forecasts

2. Meteorologist A person who studies the weather
use instruments to measure temperature, air pressure, winds, humidity, and precipitation
These measurements provide information to create weather maps and make weather forecasts
Collect data from upper atmosphere and Earth’s surface

3. Station Models Records data meteorologists gather
Shows weather conditions at a specific location
Information is entered into computers and used to forecast weather

4. Station Model

5. Station Model Symbols

6. Isotherms
Weather maps have lines that connect locations of equal temperature called an isotherm
“iso” means same, “therm” means temperature.

7. Isotherms (in color)

8. Isotherms

9. Isobars
On a weather map, isobars are the lines drawn to connect points of equal atmospheric pressure.
The closer together the isobars, the faster the wind is blowing.
Isobars can indicate areas of high or low pressure.

10. Isobars

11. Weather Maps
Once a meteorologist collects data, they then create a weather map.
Meteorologists show weather conditions on a weather map using symbols.
By viewing weather maps, we can predict future weather conditions.

12. Weather Map