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    Elliot Abrams

    An Autumnal Weekend

    By Elliot Abrams, AccuWeather chief meteorologist
    9/13/2013, 6:50:49 AM

    Friday 8 a.m.

    AccuWeather celebrated its 50th birthday yesterday. Several hundred people gathered to hear short talks by some of the company's leaders as well as two elected officials from Congress. It had rained earlier in the day, with storms bringing vivid lightning, booming thunder and gutter-gushing rivulets of rain. However, by the time the festivities began, some drier air had arrived. Later, we were treated to a nice rainbow just above the roof of the building.


    Cooler air has now replaced this week's hot spell all the way from the Great Lakes to the East Coast. There is still some rain, especially in eastern New England and downwind from lakes Erie and Ontario, but dry weather will be the rule there this weekend. This video has more.

    As cool air crosses the relatively warm Great Lakes, the low-level air warms, and this reduces the barometric pressure. This morning, that effect showed up as weak troughs embedded in the cool surface flow moving southward from eastern Canada.


    The views expressed are those of the author and not necessarily those of AccuWeather, Inc. or AccuWeather.com


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