1. March 23, 2016
Objective: I will be able to describe 3 weather fronts, the weather associated with each, and the symbol used to identify each on a weather map.
Success Criteria: I can use a weather map to identify weather fronts and predict the weather associated with each.
Entry Task:
New Seats
Read “Weather Fronts” on page 63
Set up a note taking page in your journal for weather fronts
Agenda:
Storms Quiz Review & Data
Weather Fronts Notes
Homework: No Homework

2. Storms and Weather Quiz Data:
Class Quiz Average
1st – 16.41/20 = 82.05%
3rd – 14.92/20 = 74.60%
4th – 16.91/20 = 84.55%
6th – 15.39/20 = 76.95%
Class Overall Averages
1st – %
3rd – 78.63%
4th – 87.98%
6th %

3. Storms and Weather Quiz Data:
A = B = C = D = E = ≥ 11

4. Storms and Weather Quiz Data:
Grades:
Total Test Average Total Overall Average
(99 Students Tested) (104 Science Students)
79.53% %

5. Storms and Weather Quiz Data:
1st Period Grade Distribution: 100% - 1 A – 8 B – 13 C – 4 D – 0 E – 2

6. Storms and Weather Quiz Data:
3rd Period Grade Distribution: 100% - 0 A – 1 B – 9 C – 9 D – 3 E – 2

7. Storms and Weather Quiz Data:
4th Period Grade Distribution: 100% - 2 A – 8 B – 7 C – 2 D – 3 E – 0

8. Storms and Weather Quiz Data:
6th Period Grade Distribution: 100% - 1 A – 4 B – 7 C – 5 D – 4 E – 2

9. Overall Grade Distribution

10. AIR MASSES Large body of air with very similar characteristics.
Generally defined by:
Temperature
Humidity

11. WHAT IS A FRONT?
Definition: A narrow transition zone, or boundary, between 2 different air masses.

12. TYPES OF FRONTS Cold Warm Occluded Stationary
Noted by cold air advancing and displacing warmer air that exists.
Warm
Noted by cold air retreating from an area.
Stationary
While differing air masses exist along a boundary, little movement is analyzed of the air masses.
Occluded
A complicated process where the surface low becomes completely surrounded by cooler/cold air. Occlusion processes can be a “cool type” or “cold type” (more later.)

13. COLD FRONT
Marked on a map with a blue line and blue triangles pointing towards the warm air.
Associated with cumulus & cumulonimbus clouds ahead of the front in the warm air, producing showers and thunderstorms.

14. COLD FRONT
Diagram:

15. COLD FRONT
Animation:

16. WARM FRONT
Marked on a map by a red line with red semi-circles pointed towards the cool air
Generally associated with stratus type clouds, overcast skies, fog, and general rain or snow.

17. WARM FRONT
Diagram:

18. WARM FRONT
Animation:

19. Stationary Front
Marked by alternating blue lines & blue triangles (pointed in the direction of the warmer air) and red lines & red semi-circles (pointed in the direction of the cooler air)
Usually noted as *quasi*-stationary as it is rarely ever completely stationary. It tends to meander a bit.

20. OCCLUDED FRONT
Marked by a purple line with alternating purple triangles and purple semi-circles, all pointing in the direction of the frontal movement.
There are two general types of occlusions, cool-type and cold-type.

21. OCCLUDED FRONT Simple 3-D idea: