Because this has been ignored in the main thread, I thought I would start a new thread open for discussion (perhaps short if someone has a straight up answer). As cyclonic PV anomalies tend to repel / resist merging, is this significant in how readily a stronger Sandy will phase with incoming trough? From a PV perspective, closed cyclonic anomalies tend to repel / rotate around each other until one weakens and is absorbed by the stronger anomaly. Will a stronger Sandy tend to resist phasing i