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Fronts. Front: a boundary between 2 air masses Warm air and cold air do not mix well. Changes in weather occur along fronts. 4 Types of fronts: Cold Front Warm front Stationary front Occluded front. 1. Cold Front Occurs when a cold air mass (CAM) takes over a warm air mass (WAM)

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  • Front: a boundary between 2 air masses

    • Warm air and cold air do not mix well.

    • Changes in weather occur along fronts.

    • 4 Types of fronts:

      • Cold Front

      • Warm front

      • Stationary front

      • Occluded front


  • 1. Cold Front

    • Occurs when a cold air mass(CAM) takes over a warm air mass (WAM)

    • THEY BRING COLD AIR.

    • Cold air “bulldoses” underneath the warm air.

    • Cumulus and Cumulonimbus clouds occur along cold fronts.

    • Cumulonimbus clouds produce thunderstorms!


  • 2. Warm Front

    • Occurs when a warm air mass (WAM) overtakes a cold air mass (CAM)

    • Warm air rides up on top of the cold air.

    • W. F. BRING WARM AIR.

    • Have a “distinctive pattern of clouds” when they are coming.

      • Beginning with cirrus, followed by cirrostratus , altostratus and finally nimbostratus.

    • W.F. produce light, steady rain or snow.



  • 3. Stationary fronthttp://www.cpo.com/home/Portals/2/Media/post_sale_content/PES/simulations/sim_pes_weatherch11p263.swf

    • Occurs when 2 air masses meet and move parallel to the front.

    • S.F. produce similar weather to a warm front.

  • 4. Occluded Front

    • Occurs when a fast moving cold front overtakes a warm front, completely lifting the warm air off the ground.

    • O.F. produces produce similar weather to a cold front.


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