Weather Maps | CK-12 Foundation - Free Printable

- Identify the low-pressure center (L) over the central United States.
- Locate the high-pressure centers (H) surrounding the low-pressure area, particularly over the western and eastern parts of the country.
- Trace the warm front (red line with semicircles) extending northeast from the low-pressure center toward the Great Lakes region.
- Trace the cold front (blue line with triangles) extending southwest from the low-pressure center into Texas and Mexico.
- Note the isobars (black lines) indicating pressure gradients; closer spacing indicates stronger winds.
- Observe that precipitation is likely along the fronts, especially near the low-pressure center where air converges and rises.
- Determine that wind direction flows counterclockwise around the low-pressure center in the Northern Hemisphere, bringing moist air from the Gulf northward ahead of the warm front and cooler air from the northwest behind the cold front.
- Conclude that the system is a mid-latitude cyclone typical of North American weather patterns, causing changing conditions as it moves eastward.