PORTLAND, Maine — After lots of angst trying to pinpoint where this inverted trough will set up, I'm zeroing in on the Downeast coastline. That's where the steadiest snow will fall and the highest amounts are expected.
Low pressure has been forming off the Carolinas and will travel pretty far offshore, just grazing the coastline with light snow Wednesday. Complicating the forecast is this inverted trough (an area of low-level convergence that focuses bursts of heavier snow over a few towns). Inverted troughs are notoriously difficult to forecast because they are such a small feature, oftentimes overlooked by computer models and guidance. But signs are pointing to this one setting up Downeast overnight.
Here's a look at the timeline.
MORNING:
MIDDAY:
EVENING:
OVERNIGHT:
Snow amounts don't appear to be a big deal for most of the state, but Hancock and Washington counties will pick up a few additional inches, pushing totals up close to half a foot in some eastern Maine towns.
While it's not a lot of snow, with the lack of salt treatments, roads may grease up later today making it a bit tricky for the Wednesday evening commute.
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