According to Accueweather.com, strong waves of very cold air will invade into the eastern and Midwestern parts of United States. A strong wave of arctic air will push to southeastward this week.
All this will be followed by a wide storm that will bring ice and snow to a most part of the Upper Midwest and Northeast at the end of this week. Also multiple blasts of cold air a poised to follow.
The first part of this event will have many people shivery as they go back to their dally routing in Midwest early this week.
Midwest , New England and mid Atlantic are going to get their part of cold weather, with lowest temps of the season, by the second part of the next week.
Chicago will see the single digit and lower for consecutive days in the following week as the arctic air moves in.
The cold air will bring a very colder nights to many places, and the temperatures going well under the zero mark. People leaving their home early should stay protected from the cold morning weather.
There is a strong possibility for the temperatures to not be able to go above zero F in the northern New England on one or more days. The highest temperatures in New York and central New England will probably be in the range of single digits during the day, and nights going very cold with temperature going well below zero.
New York, Boston, and Philadelphia are getting 20s for their highest for more than one day during the next week. Atlanta on the other hand will see double that temperature, around 40s, for the most of the week .
However the reelfeel temps will be dictated by the gusty winds that are going to accompany this arctic invasion. There is a strong possibility the air will be strong and painful, and in some situations, without proper cloths, and depending how long you stay outside, reaching unsafe and life-threatening levels for the Midwest and Northeast.
According to Brett Anderson, “The pattern this week will feature a stronger influence from the northern branch of the jet stream.”
Jet streams are fast flowing, narrow air currents found in the atmosphere that guides weather systems along and divides the cold air in the north from war air in the south.
During the last month of 2014, a divide in the jet stream is giving the opportunity to a storms with mild air to move across the USA.
While this new situation will prevent bed story weather form swinging up with rainy and warm masses form the south, it can deliver a couple of episodes of snow by way of storms from southern Canada.
The movement of one such storm (Alberta Clipper)will determine which areas receive a couple of centimeters of snow.
This week’s pattern will probably drag some chilly air into the Florida and Deep South, but It should not bring frost and freeze in central and South Florida.
“One thing about the pattern this week is that most days will be sunny away from the Great Lakes, when compared to the many cloudy days that December 2014 delivered,” Anderson said. “Moisture from the Gulf of Mexico will be cut off.”
Cloudy days this week will far outnumbered days with partial sunshine in parts of the Midwest and Northeast during the last month of 2014.
As cold air masses seep into the North Central and Eastern states, a warm air will cover the west.
“Rather than the pattern lock in for the remainder of the month, it looks like temperatures will again moderate at mid-month from the Central states to the East,” Anderson said.
It is uncertain whether the warm air will last more than a couple of days or a hole week, but early indications are we can expect more movement in polar vortex at the middle of the month.
In the moment it is pretty unclear which part of North America (also which continent in the Northern Hemisphere ) would receive the strong cold push in the second half of the moth.