Why hasn't the package with my laptop arrived?

The package said it arrived at the USPS distribution center in Salt Lake at 4:58 this morning. I live in Rexburg, Idaho, which is 3 hours and 50 minutes away. It's currently around 3:40 pm here, and the 4:58 AM time is the most recent update. What's going on?
Update: It got here!
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