The advisory is in effect until 4 p.m., but already this morning snow was accumulating in mountain towns.

"It looks like ... there was a good 4 inches in Alta - they're going to have to plow the roads," said National Weather Service meteorologist Chris Gibson. Park City had an inch, Logan Summit had 2 inches and Snowbasin and Parley's Summit both had between 1 and 3 inches, he said.

While the storm producing the snow didn't take the forecasters by surprise, the general weather pattern for the past week has gotten their attention.

"It is unusual. It is early," said Gibson, who noted the Salt Lake City area tied record low temperatures Wednesday and Thursday.

"In Salt Lake City [this time of year] the normal high is 76 degrees and a low of 48," he said this morning. "Sitting here now, we're at 41 degrees and forecasting a high of 52. That's almost 25 degrees below normal."

It's a pattern seen around Utah.

In Dixie, Cedar City was expecting a high of 56 today and a low of 27, compared to a normal high of 77 and a low of 44.

"It is well below normal statewide," Gibson said.

That should change next week for the first full week of fall. "We are expecting it to be near normal by Monday and Tuesday," he said. "Next week looks beautiful once we get this storm out of here."