Frontal Systems
• Frontal systems form along the boundaries between
colliding air masses of contrasting properties.
• Cold fronts and warm fronts are associated with the
interaction of continental polar and maritime tropical air
masses over the central U.S.
• Heavy rainfall, decreasing temperatures, decreasing
humidity, and changing wind directions are associated with
passage of a cold front.
• Light to moderate rain, warmer temperatures, increasing
humidity, and changing wind directions follow passage of a
warm front.
• An occluded front form