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PRE-FRONTAL TROUGH An elongated area of relatively low pressure preceding a cold front that is usually associated with a shift in wind direction. Related term: trough ...
NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: backing, BCKG, Plume Impingement, Pre-Frontal Trough, SHFT, SWLY, Veering, Veering Winds, VR, Wind Shift, Wind Shift Line, WSHFT
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