Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 256 PM EST Fri Feb 19 2021 Valid 00Z Sat Feb 20 2021 - 00Z Mon Feb 22 2021 ....Light snow over the Great Lakes into the Northeast through Sunday morning... ...Upper Midwest will receive snow and isolated areas drizzle/freezing drizzle overnight Saturday into Sunday... ...Rain and snow for the Northwest into the Great Basin/Northern Rockies through Sunday evening. An upper-level trough/low over the Great Lakes will help produce light snow over the Great Lakes into the Northeast and the Central Appalachians through late Saturday night/early Sunday morning. Meanwhile, low pressure over the Northwest will slowly move eastward to the Central High Plains by Saturday evening, then move northeastward to the Upper Great Lakes by Sunday evening. The system will produce rain and higher elevation snow over Pacific Northwest/Northern California, with mainly snow over the Northern Intermountain Region/Great Basin tonight. The rain and higher elevation snow will expand into parts of Central California by Saturday morning. The light snow will expand into parts of the Central Rockies by Saturday evening. As the storm moves out of the Rockies, light snow will develop over parts of the Central/Northern Plains and the Upper Mississippi Valley/Upper Great Lakes overnight Saturday. On Sunday morning, isolated areas of drizzle/freezing drizzle will develop over parts of the Central Plains/Middle Mississippi Valley as light snow continues over parts of the Upper Midwest. The areas of drizzle/freezing drizzle will end by Sunday evening. Light snow will continue over parts of the Upper/Middle Mississippi Valley as rain develops over parts of the Lower Mississippi Valley on Sunday evening. Elsewhere, moisture will come onshore over the Northwest ahead of the next front, which will bring an increase of rain and higher elevation snow over the Pacific Northwest and snow over parts of the Northern Rockies on Sunday into Sunday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php