A complex storm may bring the first wet snowflakes of the season to residents of the Tennessee Valley tonight into Tuesday.
This same storm system will also spread rain back into the East early this week.
AccuWeather.com meteorologists are becoming more and more confident that this storm will bring a pocket of cold air into a portion of the Tennessee Valley and that it will become trapped there later today into Tuesday.
Right now, it appears that it is western parts of the Tennessee Valley that will have the best chance of receiving its first wet snowflakes of the season as a result of this cold pocket.
In advance of this snow potential, rain will fall today across much of the Ohio and Tennessee Valleys. Should precipitation come down heavy enough across cities such as Cape Girardeau, Mo., Memphis and Nashville, Tenn., and perhaps even Tupelo, Miss., this afternoon and evening, it could mix with or change over to wet snow.
This process, known as dynamic cooling, has been known to occur in these types of situations, especially on the back side of a strengthening storm system.
While we are not anticipating heavy snow accumulations, it is certainly plausible that a slushy inch may accumulate in a few locations tonight.
The best chance of any accumulations across Tennessee, Kentucky, northern Alabama and northern Mississippi will be late tonight and into Tuesday morning and on grassy surfaces.
Snow generally has an easier time accumulating at night once the sun has gone down and the atmosphere cools.
Tennessee Valley residents will not be the only ones experiencing a brief bout of winter weather this week.
Wet snow could even translate into the higher elevations of the central and southern Appalachians Tuesday as the colder air shifts eastward, as well as across the eastern Great Lakes as the storm moves north.
Meteorologist Bill Deger contributed to the content of this story.
Earlier this week, a strengthening nor'easter battered New England, causing widespread damage across the region while storms continued to drench and blast the coastal Northwest.
A siege of Pacific storms will continue to drench and blast the coastal Northwest into next week and will be joined by Ana.
After many locations over the Plains feel like late summer this weekend, the record-challenging warmth will expand to the Northeast next week.
The disturbance responsible for drenching South Florida downpours will swing toward Bermuda this weekend, while the former Tropical Depression 9 lurks in the northwestern Caribbean Sea.
Conditions will improve across the Northeast on Friday as this week's nor'easter shifts away from the region.
The NFL returns to London this weekend amid a mild stretch of weather.
Caribou, ME (1990)
19 consecutive days of measurable precipitation.
Ashford, CT (1758)
"The 25th day of Oct., 1758, a very stormy day of snow, the 26th snowed all day, storm held from Friday night until Saturday morning." by Ebeneser Byles, Town Clerk of Ashford.
Tampa, FL (1921)
Hurricane "most destructive/highest tide," pressure 28.81"/975.6 mb, winds 100 mph, tide 10.5 feet, six dead and $3 million damage.