Snow tires?

Well, I was .5 hr late this morning, and Monday I was .5 hr late. What really bites about all of this is that it hasn't been my fault. This morning traffic was glacially slow due to the heavy snow that was falling. On Monday, they closed I-15 south and moved/merged 5 lanes of traffic into 2 on to I-215. I wonder how my employer is going to look at my recent tardies. I called my supervisor to let him know, both times, that I was going to be late, and the reason for my tardiness. I just think that I shouldn't be held responsible for situations that are out of my control.

I can hear the accusations now: "You should have left earlier." I left 20 minutes early this morning, and Monday I left 10 minutes early. "So-and-so is never late." Yeah, well he has no traffic to deal with. He's supposed to be here @ 5 AM.

I understand that a standard has to be set to be able to hold everyone accountable, but if it isn't your fault, should you be held responsible? What if the situation is out of your control? I throw the BS flag, 15 yard penalty, as my supervisor would say.