Low pressure pushing through the Great Lakes today will ride eastward through Northern New England tonight and dive east-southeastward across Maine and into Nova Scotia on Friday. This storm system will bring us a couple of rounds of “weather” over the next 24 hours.
Initially, we are on the quiet and warm side of this low pressure center and are just dealing with some clouds today. Eventually, we will get a round of showers – maybe a few downpours (rumble of thunder?) – tonight as this system passes to our north and drags a frontal zone across the area.
The bigger (or at least more noticeable) impact from this storm center will come during the day tomorrow. As the low moves east of the region it will swing a backdoor frontal zone southward through the Gulf of Maine and across the Cape…bringing us a rather abrupt change in weather conditions. Initially, our Friday will get off to a sunny and warm start. Temperatures will jump into the 60s and may even head for 70F on parts of the Mid and Upper Cape during the late morning and midday hours.
However, the backdoor front will race across the area during the midday and early afternoon hours, sweeping southward across the Outer Cape first and then through the remainder of the Cape thereafter. Behind this front, winds will shift to the north and northeast and much colder maritime air will pour into the area…sending temperatures plummeting from 65-70F to 50F to 55F over a matter of hours. In addition, a period of gusty winds is likely to accompany and proceed the frontal passage…with a few wind gusts over 40 mph possible.
Anyone out on the water should be prepared for some rapidly changing weather conditions and a period of rough seas.