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Extratropical Cyclones Forming East of the Rocky Mountains
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Primary airmasses typically present prior to the development of a cyclone
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Jet streaks and curvature lead to the development of a surface low
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Figure 7.5
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Figure 7.6
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Figure 7.7
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Movement of airmasses and development of fronts as surface low-pressure center forms
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Type of weather that may develop along fronts in early stage of cyclone development
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Three possible scenarios that typically occur south of the cyclone center
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Figure 9.7
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Deepening of trough west of the surface low Intensification of ridge east of the surface low
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Change in curvature intensifies divergence aloft Intensification of pressure gradient at base of trough enhances jet streak
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Figure 9.9
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Figure 9.10
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Trough of warm air aloft (trowal)
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Figure 9A
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