A monster cold wave brought drastic changes to the Plains and Rockies already this week, but the cold will shift farther east this weekend.
Twitter was busy Friday morning with countless first snow pictures from the central part of the country, including the Denver metro area.
The cold wave fueling the snow across the Plains and Rockies will spread south and east through the weekend.
By Saturday night, the cold front initiating the cold wave will move off the East Coast as a much colder night advances into the Ohio Valley to the Appalachians.
For Chicago and Indianapolis along with surrounding areas, Saturday night will be the coldest since April.
"Normally, a freeze in early October in the Ohio Valley would cause problems with major agriculture, but they are nearly a month ahead of schedule because of the warm spring and hot summer," said Expert Senior Meteorologist and Agricultural Expert Dale Mohler.
"However, the cold wave will signal an end to the growing season for backyard gardeners," added Mohler.
Any remaining vegetables in gardens should be plucked off before the killing cold moves in.
While lows will gradually rise across the Plains Sunday night, the expanse of the cold weather will be at its greatest breadth.
Lows will tumble into the 30s from the Texas Panhandle, east into Tennessee and Virginia.
Cities such as Amarillo, Texas, to Springfield, Mo., and Nashville will tumble into the 30s Sunday night, all well below average for this time of the year.
It will be cold enough across the Northeast to support some of the first snow of the season Sunday into Sunday night.
Temperatures will rise to more seasonable levels next week for most, but areas from the northern Plains to the Great Lakes and Northeast will see repeated rounds of cold, bone-chilling air. An active northern branch of the jet stream will contribute to the repeated rounds of cold.
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Beneficial rain will help ease the brush fire danger across Florida at midweek and bring an end to a prolonged stretch of dry weather.
A storm will continue to unleash heavy rain, gusty winds and mountain snow across Northern California into Tuesday.
The risk for severe thunderstorms will ramp up across the Ohio Valley states and lower Great Lakes region to end the week.
Several storm systems will bring rounds of gusty winds and rain to Germany this week.
Blustery showers and strong wind gusts will lead to difficult travel at times this week.
Heavy snow and gusty winds may unfold as a strong storm system sweeps colder air across the central United States late this week.
Tropical Cyclone Alfred will threaten coastal communities around the Gulf of Carpentaria with flooding downpours through early this week.
A stormy weather pattern unfolding across Europe this week will lead to showers and gusty winds sweeping into Germany on a daily basis.