Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 346 AM EDT Thu Apr 04 2024 Valid 12Z Thu Apr 04 2024 - 12Z Sat Apr 06 2024 ...Heavy snow over Upstate New York, Northern New England, the Sierra Nevada Mountains, and Central Appalachians on Thursday... ...Moderate to heavy snow over the Northern Intermountain Region on Friday... ...Temperatures will be 10 to 20 degrees below average over parts of the Ohio Valley... A deep storm over the Great Lakes and the Northeast will slowly move off the Northeast Coast by Saturday. The system will produce heavy, wet snow over north-central New England and northeast New York and later spread north through Maine on Thursday. Snowfall rates then decrease, but snow continues over Northern New England into Friday. Snowfall accumulations of 1-2 feet are 60 to 70 % likelihood for much of Northern New England and the northeast part of the Adirondacks. Furthermore, heavy snow will develop over parts of the Central Appalachians. The system will create significant impacts from heavy snow and wind. The combination of heavy snow rates and gusty winds will lead to dangerous travel conditions, with whiteout conditions and snow-covered roads. The combination of wet snow, high snow load, and strong wind gusts could also result in tree damage and power outages. Moreover, prolonged onshore winds will continue through Thursday, resulting in moderate coastal flooding for portions of the northern Mid-Atlantic and Southern New England Coast. Impacts include widespread roadway flooding, coastal and bayside flooding, impassable roads, and some damage to vulnerable structures. Snow will linger over the Central Appalachians through late Friday night, while the snow will linger over parts of the Northeast from Friday into Saturday morning. The temperatures will be 10 to 20 degrees below average over parts of the Ohio Valley. Also, showers and thunderstorms could occur over parts of the Eastern Ohio Valley through northern Mid-Atlantic on Thursday. Meanwhile, a front over the Northern High Plains, Great Basin, and Southern California will move eastward to the Northern/Central/Southern High Plains by Saturday. The system will create coastal rain and higher-elevation snow over parts of the Pacific Northwest/Northern Intermountain Region and Northern California on Thursday morning, expanding into Central/Southern California Thursday evening into Friday. Heavy snow will develop over the Sierra Nevada Mountains on Thursday. The snow will continue over the Northwest through Saturday. Moderate to heavy snow will develop over the Northern Intermountain Region on Friday. The snow will linger over the Sierra Nevada Mountains through Saturday, while the snow moves into the Great Basin, Southwest, and Central/Southern Rockies Friday evening into Saturday. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php