Jet stream noted from Rockies to Gulf of Mexico...even bringing less humid weather to south Florida. System in Pacific Northwest teams up with moisture in south to produce a large swath of unsettled weather in mid section of the Nation this Thanksgiving.
Map for this evening shows a weak front over Great lakes with snowshowers. Stronger system in NW is the one that will hit center nation for Turkey Day. Below...map for Thanksgiving.
Below - precipiation amounts expected from Thursday into Saturday. Clearly - middle of country gets the brunt.
Below....high temperatures expected for Thanksgiving Day.
West of coldest....south is warmest.
West of coldest....south is warmest.