A wave of cold air and the frost that follows will mark an end to the growing season for gardeners in the Midwest and much of the Appalachians.
If you have any remaining tender fruits or vegetables in the garden, the time to harvest these remaining beauties is coming soon.
A press of cold air emerging over the northern Plains at midweek will gather momentum into this weekend. For areas over the northern Plains, the cold will be accompanied by snow.
Farther south and east, the chill will send temperatures into the 30s and even the 20s in some outlying areas from the central Plains to the Ohio Valley and eventually much of the Appalachians.
The outbreak of chilly air and frost potential is likely to last several days in many locations.
You may want to pick frost-weary flowers, such as Dahlias, and the last of the peppers, or all you may be left with is gooey toast.
It's time to locate the ice scraper. Allow some extra time to remove ice from your car in the mornings.
Parking your car under a tree that still has leaves on it may save a little scraping and time.
Where the wind diminishes over the countryside and in the valleys, a killing frost is a strong possibility with this outbreak.
Only areas immediately downwind of the warm Great Lake waters and nearest the Atlantic Ocean may be spared by a slight breeze and/or cloud cover.
As a result, St. Louis, Cincinnati and even the metro areas around Chicago and Detroit can be visited by Jack Frost this weekend.
While the coldest air tends to settle in low areas in this setup, over the higher elevations, the temperature may still drop below freezing.
The frosty chill will feather into the northern and western suburbs of Boston, New York City, Philadelphia, Baltimore and Washington, D.C., Sunday night into early next week.
Frost is likely to stay away from the highly urbanized I-95 cities this time.
AccuWeather.com meteorologists suspected a cold wave would come to pass soon after two tropical systems in the Western Pacific Basin curved away from mainland Asia recently.
They have observed that between one and two weeks after such a path, a substantial push of cold air usually invades the northern U.S., regardless of what computer models suggest.
The phenomenon has to do with the way the tropical cyclones force the jet stream to buckle over the Pacific Ocean then correspondingly cause the same to occur over North America days later.
A new moon will allow for the perfect background for the Orionid Meteor Shower, set to peak on Tuesday Oct. 21 and into the morning of Oct. 22.
Cars were swallowed by rushing floodwaters that diced through streets in the Canary Islands, Spain, over the weekend.
Storms, including Ana, are lining up over the northern Pacific, en route to the northwestern United States and British Columbia.
Attention in the tropics will turn to the swath from southeastern Mexico to Cuba and Florida, where a new tropical system may form late this week.
After impacting Bermuda and Newfoundland, Gonzalo will bring rain and damaging wind gusts to Europe early this week.
A storm will spin up along the New England coast at midweek and will take on characteristics of a nor'easter with drenching wind-swept rain and coastal flooding in some locations.
Eastern New England (1770)
"An exceeding great NE storm" -- great damage MA to ME -- highest tide since 1723.
Pagwa, Ontario, Canada (1923)
Highest amount of snowfall in Ontario for a climatological day - 36.0".
South Coast...greater than 80-mph katabatic winds this afternoon. Prudhoe Bay (oil area) ... temp around 10 degrees, winds to 65 mph much of the day. Wind chill around 55 below zero.