Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 232 AM EST Thu Feb 25 2021 Valid 12Z Thu Feb 25 2021 - 12Z Sat Feb 27 2021 ...Lingering snow showers in northern New England this morning; Cooler temps return to the Southern Plains while Gulf coast warms up... ...Pacific storm to deliver rain and mountain snow to the Northwest... ...Stalled frontal boundary to initiate showers and thunderstorms from the Southern Plains to the Southeast... Dual frontal systems out over the Canadian meritime will continue off into the northern Atlantic today. These systems will produce lingering snow showers across northern New England this morning before coming to an end. Winter Storm Warnings and Advisories remain in effect for parts of northern Maine. Temperatures are expected to drop after the second of the two frontal systems passes through the area this evening. Temperatures are expected to plunge across much of the Carolinas tomorrow as an area of high pressure moves into the Ohio Valley and filters cold air down into the southern Mid-Atlantic. Today, a cold airmass will descend over the Southern Plains from the Rockies. High temperatures are likely to be between 20-30 degrees below average. Conversely, parts of the Northern Plains and Upper Midwest will experience a warm-up through Friday. A low pressure system and general troughing will bring rain to the low elevations and coasts as well as heavy snow to the mountains of the Pacific Northwest and Northern Rockies through Friday. The heaviest amounts may occur over the northern Cascades where snowfall totals will likely be measured in feet. Winter Storm Warnings, Advisories and Watches are in effect for these areas as a result. An Avalanche Warning is in effect for parts of the Montana/Idaho Rockies. High wind warnings are in effect across the foothills of the Northern Rockies in Montana due to the tightening pressure gradient out ahead of the approaching system. The southern portion of the Atlantic system will stall out across the Gulf coast and Southeast over the next two days. This will lead to the development of rain and scattered thunderstorms across an area extending from the Southern Plains to the Southeast during this time, while temperatures warm up to the south of the boundary. Interaction from the Pacific system and a northern stream disturbance over southern Canada will contribute to the expansion of rain over the Mid-Atlantic and light snow to the Central Appalachians and much of the Northeast by Saturday. Kebede Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php