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All Good Things Must Come to an End: Cooler Air Ahead

It's been a good run, but it's time to get off the ride.

A vigorous storm will shake up the ENTIRE  pattern over North America - bringing more frequent shots of cool air - along with a couple of opportunities for rain.

First one rounds the bend and comes at us early this week. Ahead of it, we're still nudging 70. How many days all together? Three...and not everyone hits the magical number tomorrow. Winds turn southeast, which means from Cape Cod to the North/South Shore it should hover in the 60s.

Our focus is on the front for this event. Not because we just like throwing around the term, but because it's where all the action is: heavy rain, possible thunder, gusty winds, a core of very humid air and literally the transition between summer and fall.

That's a mighty long list of issues for one front, but the good thing about it is that it's easier to time all those elements along a front rather than a storm center. Why? Well, fronts are long and well-defined. They don't take small jogs like storm centers (areas of low pressure) and they usually carry out all their tantrums in a matter of hours, not days.

That said, the window for the heaviest rain is Wednesday. The strongest winds will be in the same time frame as well....although they ramp up all day Tuesday ahead of the big event. With gusts possibly topping 40 mph Tuesday night and Wednesday, there's a chance for branches and power lines to come down. At this point, power fluctuations/outages would be in small pockets.

We'll be sweating it out too - literally. Dewpoints soar to near 70 as near-tropical air is drawn into the front. This is also how we would fuel the storms and intense rain. Beware of ponding, urban flooding and slow travel on Wednesday thanks to the downpours. And yes, this comes even with the recent spate of dry weather...it's too much too soon.

We'll catch a break late week, then temps bounce back up as we watch another potential soaker move in for next weekend. At least Halloween is looking dry at this point.


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