Sunday, February 19, 2023

Winter Storm Expected To Impact Much of Country Next Few Days

 Short Range Forecast Discussion

NWS Weather Prediction Center College Park MD

307 PM EST Sun Feb 19 2023

Valid 00Z Mon Feb 20 2023 - 00Z Wed Feb 22 2023

...Clipper system to bring light to moderate snow to the Upper Midwest,

Great Lakes and interior Northeast...

...Winter storm will bring heavy snow and strong winds to much of the

West, the Northern/Central Plains and Upper Midwest through Midweek...

Shortwave energy riding along the southern periphery of a mean upper

trough will bring a quick hit of snow showers to parts of the Upper

Midwest/Great Lakes on Monday night before spreading into the Lower Great

Lakes and Northeast on Tuesday. Snowfall totals should remain relatively

negligible with accumulations of between 3-6 inches, and locally higher

amounts, likely across the aforementioned northern tier regions.

A deep upper-level trough will enter the Northwest early this week. Heavy

snow and strong winds are expected to across the Cascades and Northern

Rockies on Monday before spreading into the Northern Plains on Tuesday.

Snow accumulations of around 2-4 feet are possible in the Northwest

mountains while portions of the Northern Plains could receive between 3-6

inches with locally higher amounts through Tuesday. Increasing winds may

cause blowing snow over parts of the Northern Plains.

The wind threat shifts into the Southwest and Southern Plains late Tuesday

into Wednesday as the region gets sandwiched between a digging northern

stream trough in the West and a southern stream low gliding across the

Baja peninsula. Wind speeds of over 30mph and gusts over 40mph are

expected for the Four Corners region. An anomalous arctic airmass intrudes

into the Sest mid-to-late week on the backside of the storm system, while

much of the Southeast and Mid-Atlantic experience potentially record

breaking warm temperatures.


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