CC or Correlation Coefficient is one of the new radar products that we have started to use and show on air at KAIT using Dual Polarization radar technology. CC is simply showing the relation between the horizontal and vertical pulses from the radar. I won't get too deep into how it works, but here is a chart from NOAA that shows what the values can correlate to... Notice the last line:
So, can we confirm a tornado from radar alone? Not so fast... Recent research has shown that even when we see radar signatures like this, it is possible to not have damage. The NWS is heading to this spot right now to see if there is damage. I bet they at least find some damage to trees...
As I mentioned earlier, the velocity data also supported a possible tornado. If you are interested in seeing it, here's an image from 1:59 AM. Velocity data is inside the scope:
I'll tweet the results of the survey later today, in case you are interested.
More blogging about the Christmas snow will come later today as well!