Most Butler County residents woke up to a winter weather advisory Sunday morning, but as the snow arrived, weather experts saw a stronger storm than anticipated.

“The latest data showed that the higher snow amounts were going to be a little higher north,” said Michael Brown, a meteorologist with the National Weather Service of Pittsburgh.

Butler County, along with other parts of Western Pennsylvania, received a special weather statement around 1:10 p.m. Sunday, calling for heavy snow to the northern part of the county, particularly in the Slippery Rock area.

“Visibilities will drop to one-half mile or less,” the alert said.

A winter weather advisory went into affect around 10:30 a.m. calling for added snow accumulations. As of Saturday night, the weather service was expecting about 2 to 4 inches of snow for Butler County.

“Additional snow accumulations (could be) between 1 and 3 inches,” said the Sunday morning advisory.

The advisory remains in affect until 7 p.m.

Throughout the late morning and early afternoon, Butler County dispatchers sent out a number of emergency crews to vehicle crashes throughout the county.

Between 10:32 a.m. and 11:56 a.m., there were six dispatches for vehicle accidents, according to a noon progress report from dispatchers.

This is a developing story. More information will be added as it becomes available.