I'm beginning to question myself (and, to a small degree, my sanity) about whether it is a SK story or not. I could have mixed it with some other story.
I remember the boy's mother had to go to work and leave him home alone (because of the snow day called in on account of the storm) and she works in a town nearby, and that town is one of the ones the guy on the radio says has been "canceled", so the boy calls his mother's work # and gets an out of order signal. Something like that.
I went to the library on SK.com and looked through the complete list of short stories hoping one of the titles would pop out and hit me in the nose, but no go.
If it isn't a SK story prhaps someone out there read it and knows who it was written by.
Maybe I have finally gone all the way around the bend!