Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
259 AM EST Thu Jan 26 2023

Valid 12Z Thu Jan 26 2023 - 12Z Sat Jan 28 2023

...Impactful storm affecting the Northeast U.S., southward along the east
coast into early Thursday...

...Active Lake effect snows downwind of the Great Lakes on Thursday and
again late Friday across the Upper Lakes...

...Arctic air to surge south into the Northern Plains/Upper Mississippi
Valley on Friday...

Rain along the Mid-Atlantic coastline and southern New England along with
moderate to heavy snow from the eastern Ohio Valley to northern New
England will continue today as the strong winter storm system lifts
through the Northeast and toward the Canadian Maritimes. Numerous Winter
Storm Warnings and Winter Weather Advisories remain in effect. Moderate to
heavy rainfall is expected across southern New England today, including
the Boston and New York City metros, while tapering off along the
Mid-Atlantic Coastline. These rains may produce isolated runoff issues,
especially in more urbanized regions. With the trailing cold front pushing
into Florida, cooler air will filter in allowing for the daily
temperatures to fall below normal for the start of the weekend.
West-Northwesterly flow will stream in across the Great Lakes after the
low pressure pulls offshore which will support active lake effect snow
showers downwind of all of the Great Lakes into the upslope of the Central
to Southern Appalachians, with locally heavy snowfall accumulations likely.

Much of the West will be calm and pleasant for late January. Some light
snows are possible, however, from the Northern Rockies into the Northern
Plains today.  Through the day on Friday, an arctic frontal boundary will
sink southward over the north-central U.S. Much below temperatures can be
expected by this weekend for the Northern Plains into the Upper
Mississippi Valley.  This feature will also support the potential for
heavy snows across the Northern Rockies through much of Friday.  Lake
effect snows also likely to begin late in the day on Friday downwind of
the Upper Great Lakes as the arctic front sweeps eastward through the
Great Lakes region on Friday.

Campbell

Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php