The arctic blast headed to the Great Lakes will be accompanied by accumulating snow and the risk for icy spots.
A band of rain and snow pressing through the Great Lakes--in a northwest-to-southeast fashion--through Monday night will signify the arctic air's arrival.
The arctic blast will be strong enough for the rain to change to a general coating to an inch of snow in many communities.
Cities in line to be lightly whitened by the snow include Chicago, Ill., Grand Rapids, Mich., and Syracuse and Binghamton, N.Y.
Monday night, a coating to an inch of snow is also expected in Indianapolis, Ind., Columbus, Ohio, Pittsburgh, Pa., and Morgantown, W.Va., as the snow sinks southward across the central Appalachians and to the upper Ohio River.
A few places could receive several inches of snow, mainly south of Lake Erie and in the higher terrain of the central Appalachians. Areas from the eastern suburbs of Cleveland to Erie, Pennsylvania are likely to have general snow and slippery travel.
While a major snowstorm is not expected, the snow still threatens to cause problems for travelers.
Slick spots could develop on some untreated roads and sidewalks as temperatures plummet below freezing. That is especially true on bridges and overpasses.
Motorists who see snow mainly accumulating on grassy surfaces should not let their guard down in regards to the above danger. The wet road surfaces could still turn icy.
Some flight delays are likely.
In the wake of the initial band of rain and snow, places downwind of the Great Lakes will see more snow through Tuesday as the arctic invasion activates the lake-effect snow machine.
In the heaviest lake-effect snow bands, the potential exists for 6 to 12 inches to accumulate across the Upper Peninsula of Michigan and 3 to 6 inches elsewhere downwind of the Great Lakes.
Outside of the Great Lakes and central Appalachians, wet snowflakes are only expected to make an appearance and not accumulate along the I-95 corridor of the Northeast Monday night through Tuesday.
Snowflakes could even been seen in Charlotte, N.C., and Atlanta, Ga., Tuesday night as an inch or two of snow whitens the higher terrain of the southern Appalachians.
An unusually strong push of cool air for early September will move southward along the Atlantic Seaboard into the Labor Day weekend, before July-like heat returns by next week.
Strong thunderstorms will roll across the Upper Midwest while rain and strong winds roar through the Northwest this weekend.
While lulls in tropical activity in the Atlantic will continue, a rapid end to the hurricane season in September does not always occur during an El Nino.
After heat has dominated headlines this summer, cool air has finally taken control of the northern half of Europe with no signs of departing anytime soon.
Steering winds could take Ignacio, as a remnant storm, into the southeastern arm of Alaska or British Columbia during the middle days of next week.
While Tropical Storm Kevin will stay well away from Mexico, its moisture will still lead to an increase in showers and thunderstorms from Baja California to the Four Corners region of the United States.
Washington, DC (1939)
"Once in a hundred-year rainstorm" 4.40 inches in 2 hours at the Washington Zoo.
Minneapolis, MN (1941)
Tornado - 5 dead - $450,000 damage.
Greatest natural disaster for Arizona. Rains in central Arizona caused rivers to rise 5-10 feet per hour, sweeping cars and buildings 30-40 feet downstream. Twenty-three lives were claimed by the floodwaters. This rain came from Tropical Storm Norma.