clouds & fronts
DESCRIPTION
Clouds & Fronts. WARM AIR MASSES: Move into colder air masses Move slowly AHEAD OF WARM FRONTS: High Clouds cirrus cirrostratus Middle Clouds altostratus AFTER A WARM FRONT: rain & possibly thunderstorms. - PowerPoint PPT PresentationTRANSCRIPT
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Clouds & Fronts
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WARM AIR MASSES: • Move into colder air
masses• Move slowly
AHEAD OF WARM
FRONTS:High Clouds
cirrus cirrostratus
Middle Clouds altostratus
AFTER A WARM FRONT:rain & possibly
thunderstorms
Warm Front
Red half-circles show direction front is moving. (rising suns=warm front
Cooler prior to front
http://www.windows2universe.org/earth/Atmosphere/tstorm/warm_front.html
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Clouds Formed by Warm Fronts
Altocumulus Cirrocumulus Cirrus Altostratus Cirrostratus
Cumulonimbus Nimbostratus Stratus Stratocumulushttp://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/cldtyp/hgh/crs.rxml
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Cold Air Masses: Move into warmer air massesMove very fastCause a sudden drop in temperatureHigh windsPush warm air up causing:Cumulus or Cumulonimbus clouds & thunderstormsAfter a cold front passes:cool, dry stratus and stratocumulus clouds or clear skies
Cold Fronts
http://www.windows2universe.org/earth/Atmosphere/tstorm/cold_front.html
Blue arrows show direction of cold front. Blue “icicles”
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Clouds Formed by Cold Fronts
http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/cld/cldtyp/hgh/crs.rxml
Cumulus Nimbostratus
Stratocumulus Stratus
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http://www.windows2universe.org/earth/Atmosphere/clouds/formation_fronts.html
Adapted from Information/Images
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