The Groundhog f-d up...
He predicted winter would be over 6 weeks after February 2. That would put it about the middle of March. It is nearly the middle of April, and it is snowing. Hard.... Sure, it is that kind of snow that melts pretty quickly and only sticks on the grass.
But the logic is really easy --
If it is snowing, then it is winter.
It is snowing.
Therefore, it is winter.
Modus Ponens... my logic students already know it...