First Winter Storm Threat for New England 2011/12 - II in New England Posted October 25, 2011 Agree with this. Lows don't really "stretch." Rather, the graphical depictions of surface pressure create this illusion. In this case the area of maximum upper level divergence and surface convergence appears to hang back toward the approaching vortmax in response to it being slightly stronger/more pronounced. This apparently delays the progression of the low center and associated precip without decreasing the intensity. Meanwhile the thermal boundary has more time to sag southward. This is a wonderfully hypothetical scenario if you are a snow lover. Not so much if you prefer warm, dry Halloweens. I still think you'd be stuck with mostly rain or slop if you're stuck deep in a valley or on the eastern shore. Well lows can be described as stretched, as in a pressure trough. The graphical illusion is in where the surface low is placed and the areal coverage of the first isobar.