21. After producing heavy rains, the system was absorbed by a frontal system on October 14. 22. Late on October 16, the cyclone was absorbed by a frontal system over southwestern Arkansas. 23. The storm then merged with a frontal system over West Virginia during the following day. 24. A complex frontal system will approach the Northwest Coast. 25. Shortly afterwards, the remnants of the depression were absorbed into a frontal system on September 2. 26. Breezes from the southwest ahead of a frontal system will draw milder air into the Northeast. 27. Low pressure will organize along a complex frontal system on Thursday in the southern Plains states. 28. A complex frontal system will cross the Rockies. 29. Andrew originated from a tropical wave over the central frontal system over the southern Appalachian Mountains. 30. Sometimes collapsed frontal systems will degenerate into troughs.