....a city in your state reports an ICE QUAKE!
===
The shaking some UW-Madison staffers and others felt Thursday afternoon near Lake Mendota was most likely an ice quake.

UW-Madison geologists say they recorded a tremor just before one this afternoon that lasted a few seconds.

A seismologist says ice quakes are caused by large shifts in ice and often triggered by drastic temperature changes, similar to those seen in the past few days.
=====

My other "you know it's cold when" item is when your windshield wiper fluid only squirts out as blue slush!

Anybody else in the deep freeze?

CB