Reprieve is on the way from the frigid air and the Polar Vortex that has briefly brought life-threatening conditions to approximately 240 million people in the United States and southern Canada this week.
Both will depart during the second half of this week, and a far-reaching January thaw will begin.
The coldest part of the air has already rotated through Wednesday. Temperature responded by climbing out of the cellar from west to east from the central Plains to the East Coast.
Over much of the Central states, South and Northeast, less wind on Wednesday has made for less harsh, less dangerous conditions.
The only exception is the northern Plains, where very cold air is hanging on. However, it is not to the extreme as that of the start of the week.
In some cases, temperatures will hold steady or rise Wednesday night over the Midwest and the East.
By the weekend, temperatures over most areas affected by the arctic cold will reach average or above average levels for the middle of January.
Temperatures are forecast to reach 50 degrees from St. Louis to Cincinnati and New York City this coming weekend. Highs will be in the 60s over much of the interior South with 70-degree readings returning to areas along the Gulf Coast.
The temperature rebound will be shared with pockets of rain, ice and snow as the week progresses. However, the areal coverage and intensity of snow and ice will be small and/or light in comparison to storms over the past few weeks.
The arctic blast was given extra momentum by a southward shift of a large cold storm that most of the time hangs out near the Arctic Circle. That storm is called the Polar Vortex.
According to AccuWeather.com Senior Meteorologist Brett Anderson, "We were overdue for a large arctic outbreak of this intensity."
On average, outbreaks as large and intense as the one that occurred early this week occur once every 10 years. The last far-reaching, bitterly cold blasts occurred in the mid-1990s, during February of 1996 and January of 1994.
According to AccuWeather.com Chief Meteorologist Elliot Abrams, "The outbreak this week managed to break the string of a lack of record lows during January that has been ongoing in the 21st century in Atlanta, Chicago, Baltimore and Philadelphia."
This particular blast of arctic air swooped southward over the Canada Prairies to the northern Plains, then turned eastward over the Ohio Valley and interior South. The Continental Divide acted as a barricade to the dense, low-level arctic air and its gusty winds.
"For the most part, the arctic air avoided the warming effects of the Great Lakes," Anderson said.
Because of the indirect path the air mass took relative to New England, the northeastern corner of the U.S. and neighboring Canada was spared the worst of it.
"In order for New England, Quebec, New Brunswick and Nova Scotia to get super cold, super fast you need an air mass to build southward from the Hudson Bay region, avoiding the Great Lakes so doing," Anderson added.
An example of this was the bitterly cold blast that hit the region late last week in the wake of the blizzard.
The clock will be ticking on the upcoming January thaw as well.
According to Long Range Weather Expert Paul Pastelok, "After a relatively mild middle part of January, we are likely to experience a return of arctic blasts later in the month."
In the coming days AccuWeather.com will have more on the forecast return of waves of arctic air and perhaps another visit by the Polar Vortex.
Several storms will bring periods of rain and gusty winds to the west coast of the United States next week with the potential for one of these to reach Southern California.
This weekend will feel dramatically different from earlier this week in the northeastern United States as colder weather, and in some cases, a taste of winter with snow arrives.
Dry weather set to dominate the southern United States through at least the end of October will only worsen the already extreme drought conditions.
The changing of the seasons will bring beneficial rainfall to northern Brazil, a region that has experienced severe drought over the past several years.
Rain will continue to cause travel delays and raise the risk of isolated flooding in parts of the northeastern United States and Atlantic Canada into the weekend.
Damaging storms pounded the Pacific Northwest, while two powerful typhoons struck the Philippines within a four-day span.
Tuscaloosa, AL (1884)
No rain from August 28-October 22. Severe drought throughout Southeast.
Temperature reached 104 degrees at San Diego (record for date). Record for date 100 degrees at Los Angeles (downtown). Climax of heat wave of record duration in Southern California.
Ottawa, Canada (1988)
Record October snowstorm brings 21 cm (just over 8 inches).