1. The high pressure system is moving east and off the coast. The low pressure system is moving across the U.S. behind a low and cold front. This cold front moved eastward and the low pressure moved along the SW to NE over the Great Lakes.
2. The cold front in Figure 1 developed because high pressure from Canada is associated with cold air mass. Frost developed along the leading edge of the cold air mass.
3. For the warm front in Figure 3 to develop, warm air from the south is necessary, which is associated with a counter clockwise circulation around the low pressure area.
4. When the cold air mass moves southward from the Great Plains, it will become warmer.
5. It appears that a low pressure system is forming over the cooler air mass from Canada.
Parent Tip: Review the logic above to help your child master the concept of forecasting weather worksheet.
