Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 309 PM EST Sat Feb 12 2022 Valid 00Z Sun Feb 13 2022 - 00Z Tue Feb 15 2022 ...Light snow over parts of the Mid-Atlantic into Southern New England... ...Light snow for the Upper Midwest and lake effect snow downwind from the Great Lakes... ...Temperatures will be 15 to 20 degrees below average over the Great Lakes, Mid-Atlantic/Northeast, the Tennessee Valley, and Western/Central Gulf Coast; Temperatures will be 10 to 15 degrees above average for parts of the Mid-Atlantic/Southeast... A front extending from the Northeast Coast to the Central Gulf Coast will move eastward off most of the East Coast by Sunday morning. The system will produce showers and thunderstorms over parts of the Western/Central Gulf Coast on Saturday evening. Overnight Saturday, upper-level energy will aid in creating light snow from the northern Mid-Atlantic to parts of New England and light rain over parts of the southern Mid-Atlantic through late Sunday night/early Monday morning. In the front's wake, temperatures will be 15 to 20 degrees below average over the Great Lakes, Mid-Atlantic/Northeast, the Tennessee Valley, and Western/Central Gulf Coast for Sunday. In contrast, ahead of the front, the temperatures will be 10 to 15 degrees above average for parts of the Mid-Atlantic/Southeast on Sunday morning. In addition, lake effect snow will develop downwind from the Great Lakes through Sunday evening. Additionally, over Southern California, temperatures will be in the low 90s for Sunday, which has prompted Heat Advisories. Meanwhile, a wave of low pressure moving southeastward across the Northern/Central Plains will move to South Carolina by Sunday evening. The system will produce light snow over parts of the Upper Midwest on Saturday evening, moving into the Middle Mississippi Valley by Sunday morning. The associated upper-level energy will produce light snow over parts of the Great Lakes and Ohio Valley for Sunday evening. Snow showers will move into the Northern/Central Appalachians by Monday morning. Furthermore, on Sunday evening, another wave of low pressure will move over parts of the Upper Midwest, moving southeastward to the Middle Mississippi Valley by Monday morning before moving northeastward to Eastern Ontario, Canada, by Monday evening. The fast-moving system will produce light snow over parts of the Upper Midwest on Sunday afternoon and into parts of the Upper Great Lakes and Western Ohio Valley by Monday evening. Moreover, a front will move onshore over parts of the Pacific Northwest on early Monday morning, moving to the Northern Rockies/Great Basin by Monday evening. The storm will produce coastal rain and higher elevation snow over the Pacific Northwest, with snow expanding into the Northern Rockies by Monday evening. Ziegenfelder Graphics are available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php