Originally Posted by
BoeingBoy
It's not obvious, but the temps tell you roughly where the freezing rain associated with this storm is. Just look at the line between above and below freezing chill factors. BTW, this isn't exact - while rain on an exposed surface like the ground is subject to chill factors since evaporation drops the temp of the surface water, the ground cools slower due to several factors. But airplane wings, for example, are not only exposed to the chill factor but may still be cooler than the airport temp because of descending from cooler altitudes and holding cold soaked fuel.
Jim
Jim, I'm pretty sure that water will not freeze due to the wind chill factor. For example, if the air temperature is 37 degrees and the wind chill temperature is 27 degrees, water stays liquid. (Similarly, if a surface -- like the ground or a wing -- is 37 degrees, the wind child temperature is also meaningless). That's why I don't see the meaning behind the OP's posting a wind-chill map with a title of "Worst Ice Storms in Years Unfolding".