An upper level trough advancing eastward across the northern tier states will keep unsettled conditions in store for the next few days.
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As the upper trough moves through the west-central portions of the country cool Pacific moisture will advect into the West resulting in below seasonal normal temperatures along with scattered rain/snow showers for the Pacific Northwest and Northern Rockies.
The snow likely remain confined to the highest elevations of the Cascades and Northern Rockies.
In its wake high pressure will build over the West Wednesday and Thursday while lingering precipitation tapers off.
Diffluence associated with the aforementioned upper trough will generate light mixed precipitation from the Northern Plains to the Northeast through the end of the week.
A deep mid-latitude cyclone will have developed by Thursday over the Midwest and will spread showers and isolated thunderstorms into the interior Northeast.
Showers and thunderstorms will also develop along the attendant cold front over the Southern Plains and Lower Mississippi Valley by then.
Cooler air will filter into the Upper Midwest, Great Lakes and the Northeast on the backside of the low pressure system.
Meanwhile, snow showers will spread south across the Colorado Rockies on Wednesday into Thursday morning.
There is a Critical Risk for wildfires today given the the dry and windy conditions over the Southern High Plains of eastern New Mexico into the Texas Panhandle.
Southerly flow across the Central and Southeastern U.S.
will produce anomalous warmth for much of the Great Plains to the East Coast before the cold front sweeps through on Thursday.
Many places from the Southern Plains to the Central/Southern Appalachians may experience record high temperatures today and Wednesday. ■
The main thing making weather headlines Friday and into the weekend will be the widespread coverage of showers and thunderstorms across much of the central and eastern U.S., with a particular focus across southeast Texas, the Mid-South, and portions of Virginia.