...when fahrenheit temperatures drop below zero...when the weather forecaster has utilised the word "brutal" in his five day summary
...when taking your hand out of a glove to answer your mobile phone is not an option
...when taxis drive like the Flintstones' car because the tires have frozen into non-circular shapes
...when ice-flows down the Hudson disrupt ferry services
...if the dribbles from your nose reach your chin without you feeling it.
We're still awaiting the 'big' snow this winter though...
