Coldest weather of the season to dive into eastern U.S. next week as fall colors begin to burst.
'Unlike past years, fall weather has wasted little time asserting itself this September in the eastern United States, and, as October begins, the most intense blast of chilly air yet will crash southward.
The jet stream, the high-altitude wind current that divides cold and warm air, is set to plunge out of Canada this weekend, carving out a trough or dip over the eastern United States for much of next week and perhaps longer.
The core of the cold is initially forecast to focus between the Plains and the Appalachians, where temperatures may hover 10 to 15 degrees below normal for much of next week in the Midwest, the Great Lakes and the Ohio Valley. The East Coast is predicted to lie along the periphery of the expansive cold pool, with temperatures a little above normal early in the week but trending colder during the week’s second half.
In Chicago, after climbing into the 80s over the weekend, highs next week are forecast to plummet to only near 55 Thursday and Friday. Nighttime lows are likely to sink to near 40, with frosty 30s in its colder suburbs.
“Potentially summerlike temperatures Saturday are expected to give way to conditions more suited to mid to late October by Wednesday, as three successive cold fronts bring colder air and unsettled weather to the region,” the National Weather Service office serving Chicago wrote.'>>>
https://www.washingtonpost.com/weather/2020/09/24/eastern-us-cold-foliage/?
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Much cooler today than yesterday (MD, 60 miles south of DC,) and cloudy; rain tomorrow.
Forecast here for Sunday = 76, highest for the week.
68 here now, down to 60 tonight! then showers, and hi 70.
