We had approximately 3 days of good sap collecting weather this year. We didn't even try, though one of Bill's coworkers got a few gallons of sap. Next year will be easier when I don't have to worry about scheduling sap boiling on a weekend.
This is the second article I've read about syrup issues this year. Creepy sad stuff.
The overall pattern is clear, though - Vermont maple producers on average sugar a full month ahead of the starting point 100 years ago. In my region those on south-facing slopes sometimes start as early as January. And it is pretty clear that sap runs will get shorter over time.