As the latest surge of arctic air sweeps across the Upper Midwest, the northern Appalachians and neighboring Canada, freeze-ups, heavy, lake-effect snow and other areas of accumulating snow will erupt.
While the new wave of cold air will not be as long-lasting as that of a week ago, it will pack a punch, especially in the vicinity of the Great Lakes.
First, plunging temperatures and spotty snow lead to a quick freeze-up of wet, slushy areas late Wednesday night from the eastern end of the Ohio Valley to part of the central and southern Appalachians and southwestern Ontario.
For example, daytime temperatures Thursday in much of western Pennsylvania will be below the 32-degree mark, when compared to 60- to 70-degree peak readings from Wednesday.
Despite the amazing warmth of late, a sharp change to colder weather is in store before the end of the week, including areas of slippery travel. (Photos.com image and thumbnails)
Next, bands of heavy snow will set up downwind of the large bodies of water.
Where the bands of snow persist, accumulations from 1-2 feet of snow are possible over a 24- to 48-hour period.
Beginning Friday and continuing into the first part of next week, a series of weak storms originating from western Canada, known as Alberta Clippers, will attempt to spread areas of accumulating snow and flurries from the Midwest to New England and the mid-Atlantic.
However, there is the potential for just enough snow to cause slippery travel in the Washington, D.C., and Baltimore, Md., areas by Friday morning rush hour.
Another clipper storm could bring a small amount of snow to portions of the Ohio and Tennessee valleys during Saturday.
AccuWeather.com will have more details on who is most likely to receive the most from the storms in the coming days.
Smoke created hazy, orange views in Los Angeles on Saturday as the Sand Fire continued to rage less than 40 miles away from the city's downtown.
Conditions will continue to deteriorate across Hawaii this weekend as Darby delivers locally heavy rain and rough surf.
Much of the eastern United States will continue to swelter with above-average temperatures into the end of the month.
Stifling heat has been baking the central United States but will finally ease across northern areas this weekend.
Lightning killed a teenager on Friday, the second teen lightning death in three days. With thunderstorms continuing to rattle several parts of the nation, more lives will be at risk.
The more than 100,000 people expected to attend the annual Glorious Goodwood festival this week will want to keep a brolly handy.
North Carolina (1975)
Lightning killed 13 cows during a thunderstorm at Kenansville. Heavy rains elsewhere in the state forced the Tar River out of its banks at Greenville, causing 14 families to evacuate their homes.
New York (1975)
Severe thunderstorms in western and central NY: lightning struck a city park in Rochester injuring 12 children, all were playing on a metal jungle gym. One patrolman described the scene as if "someone threw a stick of dynamite in the middle of the crowd and it blew."
Southeastern MA (1990)
Torrential rains: Middleboro 7.20" Bridgewater 5.00" Tauton 4.33" Abington 3.05" Cars were stranded in high water in Fall River, MA.