Thanks to Warner Nature Center and Paul their beekeeper that provided the graphic.
This is a weigh scale graph recording the daily weight of a overwintered colony.
You can see by the graph when the rise in weight corresponds with the Black Locust nectar flow. This hive just kept on rolling. Putting up a steady honey increase.
The rise in honey weight started on May 18th. The hive added about 110 lbs of honey from May 18th to present date.