Accumulated Cyclone Energy (#ACE). 

Update: I've deleted the two posts on this subject from earlier this afternoon. 

After finding issues, I returned to the Colorado State website to verify the data. It matches but there may be other issues.

The same website had a cosmetic data problem at the end of last year when hurricane totals dating back to 1851 did not sequence correctly. I believe CSU links to Wikipedia and something in the link wasn't working correctly.

Again, the published formula for Accumulated Cyclone Energy is ACE = 10⁻⁴ *  Σ(v_max²), where v_max is the maximum sustained wind speed in knots, and  the summation is taken over six-hour intervals for all tropical  cyclones with wind speeds of at least 34 knots.
#ACE