Which is the official school closing station?

Another "Severe Weather Alert Day" in the metro Detroit viewing area, at least that's what WDIV, the NBC affiliate here, calls snow days. They also call themselves "the official school closing station." That title might be more appropriate for WXYZ, the ABC affiliate. They reduce the Good Morning America display significantly to show the school closings, but much more than WDIV reduced the display of the Today show. More importantly, however, WXYZ kept up the display of school closings through the commercials. Not so WDIV, which promptly removed the school closing display well in advance of commercials.