Fig. 5: Schematic linking jet and RWB anomalies to a cyclone family.
From: Serial clustering of extratropical cyclones: a review of where, when and why it occurs

A typical cyclone family (grey) and their associated tracks are shown at the surface. At upper-levels, the cyclone family is associated with evolving jet and RWB anomalies, which move eastward with the surface cyclone family. For more details see text. Adapted from Bjerknes and Solberg3 (Fig. 10), Pinto et al.28 (Fig. 7) and Priestley et al.59 (Fig. 9b).