The winter and summer seasons clashed this week, letting a multitude of weather phenomena unfold around the world.
At midweek, dense winter fog enshrouded New York City, setting an eerie, wintry scene for the region, while New England enjoyed a snow-free sunrise.
Moving west, massive pileups flared up across the northern Plains, as blowing snow made for near-zero visibility near Sioux Falls, S.D.
On the West Coast, Southern California erupted in flames, as the return of the Santa Ana winds against the drought-stricken land triggered two immense wildfires in the area.
Across the Pacific, a resilient heat wave slammed Australia making for sizzling temperatures at the Australian Open in Melbourne. The heat caused suspension of gameplay on Tuesday and Wednesday, as multiple players and spectators suffered heat-related illnesses.
North of Oz, widespread rainfall caused deadly flooding and mudslides, claiming more than 25 lives in the southern Philippines.
A blanket of fog surrounds the New York City skyline on Wednesday morning, Jan. 15, 2014. (Original Photo/Michael Surtees)
A snow-free winter sunrise on Wednesday, Jan. 13, 2014, makes for a nice change of pace in Massachusetts. (AccuWeather Photo Gallery Photo/Carlos Godinho)
Along I-90, west of Sioux Falls, S.D., blowing snow and low visibility result in a 22-car pileup on Thursday, Jan. 16, 2014. (Twitter Photo/NWS Sioux Falls)
A wildfire burns in the hills just north of the San Gabriel Valley community of Glendora, Calif., on Thursday, Jan. 16, 2014. (AP Photo/Nick Ut)
A young spectator cools herself down in in the fountain in Garden Square as play was suspended when organizers implemented the Extreme Heat policy during second round matches at the Australian Open tennis championship in Melbourne, Australia, Thursday, Jan. 16, 2014. (AP Photo/Joshua Baker)
In this Sunday, Jan. 12, 2014, photo, rescuers from the Comval Emergency Response Team continue their rescue operation following the flooding of Compostela Valley and nearby provinces in southern Philippines. (AP Photo/A. Dayao)
A multi-vehicle accident involving more than 50 vehicles occurred amid snow showers and brutal cold and led to the shutdown of Interstate 78 in Lebanon County, Pennsylvania, Saturday morning.
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.
The dangerous cold gripping the eastern United States will set the stage for disruptive snow and ice to unfold from Tennessee and Georgia to Maine Presidents Day into Tuesday.
Voters heading out to the polls on Saturday, Feb. 20, can expect mild weather and dry conditions for the next step in the 2016 Presidential Election.
The dangerous cold gripping the eastern U.S. will continue to allow snow showers and squalls to stream downwind of the Great Lakes this weekend and posing more hazards for motorists.
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.
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.
Minneapolis, MN (1990)
String of 48 consecutive days with above normal temperatures broken.