Gonna try and recalc Connor's Tsunami feat based on this and this calc. If you'd like to view the old calc (which I still want to try and get right), click here.
According to this a tidal wave contains 22,500 gallons of water or 85171.7651 kg of water. The largest waved surfed is 73.5 feet which I'll be using for the 22,500 gallons of water to get a rough estimate of the tsunami. The largest tsunami ever is the Lituya Bay Mega Tsunami which was 1,700 feet.
Tsunami height difference: 1,700/73.5= 23.1292517
Amount of water: 85171.7651x23.1292517= 1969959.19 kg
m = Mass is 1969959.19 kg
c = Specific Heat Capacity of Water is 4186
ΔΤ = Change in Temperature = Tf* - Ti* = 100 - 20 = 80
L = Latent Heat (vaporization) (2.2647057e6 J/kg from this)
Q = m*(c*ΔΤ+L)
Q = 1969959.19 * (4186 * 80 + 2.2647057e6)
Q = 5.12107774e12 Joules
Connor turns a Tsunami in vapor: 5.12107774e12 Joules (Low 7-C or Small Town Level)
Divide by 20 since the feat was performed while Connor was in his Phoenix Form to get base power:
5.12107774e12/20= 2.56053887e11 J (8-B or City Block Level)