Those looking to travel for the Thanksgiving holidays will likely be stuck with flight delays and stormy conditions with a powerful storm system moving across the Great Lakes to the Northeast Monday through Wednesday. A clipper system will begin moving across the northern tier of the US followed by one of the first Arctic Outbreaks of the season. With a trough digging in across the Eastern half of the nation will rapidly intensify the primary low across the Great lakes dragging a cold front through the Mid-Atlantic states.
Once we get to Tuesday and the trough begins to dig and slow down a secondary low develops and stalls over Cape Cod bringing heavy rainfall, snow, and gusty winds across the interior Northeast and Mid-Atlantic States. Model guidance has been very consistent with a bombing out low below 980mb across New England followed by some of the coldest air of the season to the region.
With a powerful Greenland Block (Omega Block) setup going forward, it’s no surprise that we will be seeing a slow moving powerful storm system developing across New England. There is no where for this storm to move up to the north thanks to a strong blocking ridge of high pressure. These blocking patterns put on the brakes on storm systems along the Eastern Seaboard.
Prepare for travel delays next week if you plan of flying thanks to the very unsettled weather conditions across the Mid-Atlantic to New England. Allow extra time if you are driving with strong winds, heavy rainfall, and snow conditions will be present within in this storm.