Possible Clues:

• Point opposite SSW
• Dayton-to-Toledo dir
• Storm dir.
• Dallas-to-Plano dir
• Direction opposite SSW
• St. Louis-to-Chicago dir
• Paris-to-Amsterdam dir.
• Nashville-to-Louisville dir
• Anchorage-to-Fairbanks dir.
• Wichita-to-Omaha dir.