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Having a slow moving weather pattern is a double-edged sword. When the weather gets nasty, it stays nasty for a while. When it gets nice, it stays nice for a while.
It will also warm up some across the southern Plains while it cools off in the Southeast as a slow-moving front inches southeastward.
Thanksgiving through the weekend look wet, cold and generally nasty for many places west of the Mississippi; a surge of tropical moisture from Sandra will likely lead to some flooding.
The convergence of multiple weather features over the southern Plains will result in a soaking rain; as cold air arrives parts of Texas and Oklahoma will see some ice and snow!
True arctic air coming into the South will give many places the chilliest stretch of the season so far. But, the weekend and early next week look mostly dry. Will that hold for Thanksgiving?
A storm coming out of the Four Corners will cause high winds, tornadoes and flooding rains through at least Tuesday, perhaps even later, as it marches across the eastern two-thirds of the nation. The long range is looking colder.