1. Weather

2. What is weather? • Set of all phenomena occurring at a given time in the atmosphere. • example: wind, atmospheric pressure, humidity

3. Climate • Sum of weather conditions for a region over a long period of time.

5. Front • a boundary between two air masses of different density, moisture content, or temperature.

6. Stationary front • Front does not move or barely moves. Has similar characteristics to warm fronts.

7. Cold Front • Replace warm air with cold air. Associated with severe weather

8. Warm Front • Warm air replaces cold air. Long light showers typically, some severe weather.

9. Occluded front • Mixing of air. Cold fronts move faster than warm fronts. Can have characteristics of either cold or warm fronts

10. Cold Fronts

11. Cold Front

12. Warm Front

13. Station Model

14. Cloud Cover Symbols

15. Wind Speed Symbols

16. Weather Isolines • Isotherms – Lines of equal temperature • Isodrosotherms – Lines of equal dew point temperature.

17. Surface map 70 degree isotherm

18. Rain Shadow Effect

19. Heat Index Chart

20. Wind Chill Index

21. Wall Cloud

22. Supercell

23. Useful Weather Links • http://www.nssl.noaa.gov/ • http://www.theweatherchannelkids.com/ • http://www.wunderground.com/ • http://www.kjrh.com/weather/default.aspx • http://www.mesonet.org/ • http://radar.srh.noaa.gov/fire/