Special update this evening to cover another Norlun trough type setup that looks to bring another round of light snow tonight and into early tomorrow morning. While the heavy snow bands usually associated with Norlun troughs will remain mostly offshore, an axis of shifting winds with reasonably impressive instability and some lift too will make an appearance mainly east of Brunswick tonight into tomorrow morning.
A low pressure area that brought snow and ice to the southeast US will move too far offshore to bring major impacts though a Norlun trough, basically a wind shift line, will extend to the NW of the storm bringing coastal areas some snow. Snow will be concentrated between 11 tonight and 9 tomorrow morning.
While snow will mainly be light, especially west of Brunswick, some moderate to even heavy bursts of snow are likely across Midcoast areas. The map above shows intense upward motion across Midcoast areas tomorrow morning signaling bands of heavy precip are possible. The areas most at risk for heavy precip will be east of the Bath/Brunswick area.
Here is the expected snowfall from this event. Not a lot, but the driveway will once again have to be cleared especially over eastern areas.
In case you were wondering if this event was a Norlun trough, Weir Lundstedt, one of the two ‘discoverers’ of the Norlun trough (he represents the ‘lun’ part of Norlun) confirmed yesterday evening this did in fact look to be a hybrid Norlun event.