Sudden snow squalls will quickly slick roads and create whiteout conditions Friday night into Saturday.
A storm will bring snow and ice that will lead to slippery travel along a 1,500-mile swath from northern Arkansas and Georgia to Maine early next week.
The coldest air of the winter will plunge southward across much of the eastern United States and will feature single-digit and sub-zero temperatures in the Northeast during Valentine's Day weekend.
A blast of arctic air will be accompanied by flurries and even a localized wall of snow in some communities in the Northeast and parts of the Midwest at the start of the Valentine's Day weekend.
Heavy rain will raise the risk of flooding across more than a dozen states in the Southeast on Presidents Day to the East Coast on Tuesday.
Umbrellas will be needed on Valentine's Day as scattered showers overspread Germany.
As warming ocean waters continue to threaten coral reefs worldwide, researchers at the University of Hawaii have developed a plan that could reverse the rapid decline of these ecosystems.
Snow days are exciting for children, but harsh cold and treacherous wintry weather can make it difficult to get outdoors and play.
A cruise ship was battered in a ferocious winter storm that slammed portions of southern New England with blizzard conditions.
Instead of being targeted by windstorms, the United Kingdom will have to deal with a cold snap settling in for Valentine's Day and Monday.
Spring of 2016 could rank in the top 10 warmest on record for Canada.
North Dakota (1936)
On this date the mercury plummeted to -60 deg. at Parshall, ND - the coldest temperature ever for the State of ND. Later the same year, the mercury soared to 121 degrees at Steele, ND - the hottest temperature ever for the state of ND.
Eastern US (1981)
All time high pressure reading were set: Asheville, NC 30.84 inches; Wilmington, DE 30.99 inches; Baltimore, MD 30.97 inches; Scranton, PA 30.96 inches; Louisville, KY 30.99 inches; Washington, D.C. 31.02 inches; Hartford, CT 31.03 inches; Allentown, PA 31.03 inches; Philadelphia, PA 3 inches.
Eastern US (1985)
Great Ohio Valley snowstorm whips snow into mountainous drifts and strands hundreds. In southwest Ohio 10 plows were stuck in the drifting snow and abandoned. Over a foot of snow in central and eastern Kentucky with 10 - 15 ft. drifts. Over 2 inches of snow in most of North Carolina.