Powerful low pressure will slowly trudge eastward away from the region today…deepening to a formidable 965 mb low center over Georges Bank.
As the system gradually wobbles eastward it will spin bands of snow showers and flurries into the region throughout the day – however the brunt of the heavy precipitation looks as though it will remain to our north and east, sparing us from a significant snow event.
However, while we’ll miss out on the snow, we won’t avoid the storm’s wind and will certainly have some beach erosion and coastal flooding to contend with today into tonight.
As for the wind…expect northwest winds to ramp up over the course of the morning, increasing to 25 to 40 mph sustained by midday with gusts passing 50 mph. As we push through the afternoon hours, winds will be howling from the northwest, frequently gusting 50 to 60 mph, with isolated stronger gusts on the Outer Cape. The wind will create low visibility and cause some power outages around the area. While gusts will slowly subside this evening, strong winds in excess of 40 mph will continue through much of tonight.
The midday high tide is the tide of concern. While this system doesn’t have all of the ingredients for a severe coastal flood event, it does have the potential to produce some substantial beach erosion and areas of coastal flooding at the time of high tide. The region most vulnerable in this particular set up will be the stretch of Cape Cod Bay beaches from about North Eastham south and westward around to Sandwich – with a focus in Eastham, Orleans, Brewster and Dennis.
It’s along these bayside beaches and adjacent marshes and estuaries that the midday high tide will cause some problems. The powerful northwest wind will create large waves and drive water onshore, yielding areas of severe beach erosion and some flooding of low-lying roads. Anticipate some road closures in the traditionally vulnerable locations. Homes right along the water – those that are typically exposed to flood events along Cape Cod Bay – are likely to experience some inundation issues.