Colder air has arrived, even colder air is expected next week

November 6, 2014 0 Comments

The well-advertised cool down is underway and it looks like we’ll be going from typical early November chilly weather to downright frigid, December-like weather within the next week. That’s right, we’re going to be essentially skipping ahead about a month in our meteorological calendar in the coming days thanks to a shift in the jet stream and a series of surface cold fronts. To go with the pronounced cool down, we’ll have some good old-fashioned November winds to keep that feels like factor on the nippy side pretty much the entire time.

The "active" northwesterly flow in our current jet stream pattern is drawing in a series of weak storm systems from western Canada, meaning several rounds of cloud, precipitation lie ahead along with plenty of cold wind chills.

The “active” northwesterly flow in our current jet stream pattern is drawing in a series of weak storm systems from western Canada, meaning several rounds of cloud, precipitation lie ahead along with plenty of cold wind chill values.

In the week or so that we’ve been in this weather pattern, we’ve had two storm systems bringing rain to the area while temperatures have begun to slowly edge their way downward. We once enjoyed 50 degree warmth, which for early November is pretty typical, but now 40-something readings are the new reality. The weekend will feature at least two more cold fronts and some highs in the upper 30s. By early next week, the jet stream will take an extreme shift southward, allowing an air mass from northern Canada to settle in to the Upper Midwest. Even though we’re now expecting plenty of sunshine in the middle to latter parts of next week, our temperatures mat very well end up in a 15 to 20 degree below normal regime. That means teens in the mornings and 20s or low 30s in the afternoon hours for three or four days before a possible “warm up” brings us back to November.

The jet stream next week will sag southward into the mid Mississippi Valley and mid Atlantic states. That may mean a quieter pattern after Monday thanks to high pressure at the surface while the "active" weather on the main storm track of the jet stream will drift to the south as well.

The jet stream next week will sag southward into the mid Mississippi Valley and mid Atlantic states. That may mean a quieter pattern after Monday thanks to high pressure at the surface while the “active” weather on the main storm track of the jet stream will drift to the south as well.

Incidentally, the last cold front in that series will affect us Monday, possibly meaning light snow for our area or at least the greater region. There is a chance that light to moderate accumulating snow may develop just to our west of south as energy aloft arrives behind the front. If the timing changes, we may end up with some interesting weather for our “back to school” and “back to work Monday.” As it stands now, a light dusting seems more likely before that cold high pressure takes over later in the week. Stay tuned!

 

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