The below tweet prompted a response from @Blizzardof96 on the AccuWx Forums. Always an insightful read from him.
His response mused me into responding. My response is below.
In regard with the long-term ISO, late April should be watched for another cold intrusion. However, with the jet transitioning northward, I am not against departures coming in less dramatic. Take a similar jet position, in a similar transition (to winter, instead of summer), the first half of November the midwest was riddled with short lived ridges.
It is the short-term ISO that will pick up on this soon, shall the Rossby recur in such a way.
If there are any questions, comments, or suggestions on the material presented please let me know. Thanks for reading!