Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 244 AM EST Sun Jan 02 2022 Valid 12Z Sun Jan 02 2022 - 12Z Tue Jan 04 2022 ...There is a Slight Risk of excessive rainfall over parts of the Tennessee Valley, Central/Southern Appalachians and Southeast through today... ...There is an Enhanced Risk of severe thunderstorms over parts of the Tennessee Valley and Southeast through this morning... ...Heavy snow over parts of the interior Northeast today then Pacific Northwest mountains on Monday... ...Mississippi Valley and Great Plains cool down while East Coast experiences warm temperatures today... A cold front, currently draped along the East coast, will be the focus for heavy rain, snow and severe weather over the next couple of days. The Southeast portion of the front is slow moving and allowing for the development of a line of thunderstorms over portions of the Southeast and the Tennessee Valley this morning. Some of these storms may be severe, with damaging winds and isolated tornadoes being the main threats. An Enhanced Risk of severe weather is in effect as a result. Heavy rain is also possible over much of the same area this morning, due to the slow nature of the surface front leading to the potential for longer duration rainfall. A Slight Risk of Excessive Rainfall is in effect for northern Alabama/Georgia, the Tennessee Valley and Central/Southern Appalachians as a result. As the system moves east today, so will the threat for flash flooding. A Slight Risk of excessive rainfall is in effect for a small portion of southern South Carolina and eastern Georgia today as the low pressure system begins to strengthen. Scattered thunderstorms are also expected across the Southeast. As this system deepens, it will become more dynamic and pull cooler air into its northern quadrant. This will lead to the potential for measurable snow to accumulate over parts of the Mid-Atlantic tonight through Monday morning. East Coast temperatures will be above average today before giving way to more seasonal air behind the passing low pressure system on Monday. Meanwhile, Below normal temperatures are expected over much of the Mississippi Valley and Great Plains today. A cold front moving across the Northeast will produce 3-6 inches of snow across parts of the interior Northeast today. Troughing in the West will lead to heavy snow potential across the Northwest mountains through Monday. A slow moving cold front will produce 1-2 feet of snow for the northern Cascades and Olympic Mountains today before shifting focus to the southern Cascades on Monday where 2-4 feet is likely. Snow will also spread into the northern Sierra and Northern Rockies on Monday where 6-12 inches are likely. Coastal and low elevation rainfall is also likely with this cold front, with isolated areas along the Northwest coast at marginal risk of experiencing flash flooding. Kebede Graphics are available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php