Panel 1: We find ourselves watching Liz react to mild flurries by dancing. IF you look closely, you'll notice that she's wearing eyeglasses so it's possible that Lynn slotted in a strip from 1991 just so she can have the Valentine's Day strip on 14 February.
Panel 2: In any event, this continues on with her smiling at the snow.
Panel 3: We switch focus to the living room when we see Elly's been looking at this out the picture window all this time. John sets up the Hallmark card punchline by asking her what she's looking at.
Panel 4: Elly's mildly sappy response is "the most perfect ballet."
Summary: I don't know if this is a new one or a later first-run thing there to keep things on track. All I know is that it's a mildly cute way of breaking up the narrative flow.