Most of the model guidance has begun to advertise a strengthening ridge over the Aleutian Islands (a negative North Pacific Oscillation pattern for the weather nerds out there) along with a building ridge over the North Atlantic into Greenland (a negative North Atlantic Oscillation pattern). Both areas of ridging bridges over the Arctic. This is a pattern favorable for widespread cold across most of the U.S. The areas that will likely see the brutally cold air initially will be from the Pacific Northwest and the northern half of the Intermountain West, which will eventually extend southward into the Southwest and eastward into the Great Plains. This cold will ultimately extend all the way to the Gulf coast states and East Coast with Florida and regions directly on the Gulf Coast (even that's debatable) being the only regions that stay on the warmer side after the first 5 days of January.
Post by DYLAN FEDERICO on Dec 27, 2016 22:57:46 GMT -6
The 0z GFS is looking very cold for January 4-6 with nightly freezes on both sides of the lake & highs staying in the 30's for much of us. Don't see any signs of frozen precipitation but New Years eve looks really nasty with heavy rain and severe wx for much of the Gulf Coast.