More than 1,200 record high temperatures have been set over the past week across the U.S., and nearly 6,000 record highs have been recorded since the beginning of 2012.
From March 8-14, 2012, the total number of records is 1,226, according to the National Climatic Data Center.
On Wednesday, Mar. 14, 2012 alone, 423 records were set.
This map from NCDC shows the total number of record highs for March 2012 so far. Through March 14, 2012, the total is 1,641 record highs.
From the beginning of the year (Jan. 1-March 12, 2012), there has been a total of 5,618 record highs. In comparison, Jan. 1-March 31, 2011, there were only 2,800 record highs recorded.
"The jet stream has been flung all the way north across central and eastern Canada," AccuWeather.com Expert Senior Meteorologist Alex Sosnowski said, when explaining why warmth has been so widespread this March.
"At least two-thirds of the nation could wind up with above-normal temperatures [this spring]," Paul Pastelok, expert long-range meteorologist and leader of the AccuWeather.com Long-Range Forecasting Team, said late in February. He forecast that there could be the most widespread warmth this spring since 2004.
RELATED: AccuWeather.com Spring 2012 Forecast
Warmer air will build from California to Washington into Tuesday raising temperatures to near-record levels.
Waves of arctic air invading the eastern half of the United States this week will culminate with the coldest weather of the season so far for some areas by the second weekend of February.
The new week will bring more opportunities for snow to create slick travel in the northeastern United States, starting with a winter storm set to sideswipe New England on Monday.
As the first of several waves of arctic air sweep southeastward across the Midwest, just enough snow will occur to cause slippery travel over a broad area into Monday.
In some circumstances climate, environmental factors and weather have led to some of the most exciting, mysterious and academically important discoveries of all time.
Seminole, TX (1933)
-23 degrees , Texas state record.
Vega, TX (1956)
61 inches of snow fell from one storm (Feb 1-8) State record for a single storm and for a month.
Snowstorm, worst of season. 12-18 inches in the western mountains . . . a foot common statewide up to 24 inches in the mountains of Vermont, between Bristol and Waitsfield. 16 inches in other mountain areas, 12-14 inches in valleys, 14 inches at Albany, NY and 10 inches at Plattsburgh, NY.