Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 324 AM EDT Sat Mar 30 2024 Valid 12Z Sat Mar 30 2024 - 12Z Mon Apr 01 2024 ...Heavy snow over parts of the Sierra Nevada Mountains and the higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona... ...Snow over parts of the Upper Great Lakes... ...There is a Sight Risk of excessive rainfall over parts of Southern California on Saturday... An upper-level low will develop off the Central California Coast on Saturday, moving inland to the Southwest by Monday. The circulation around the low will stream moisture inland over parts of Southern California and other parts of the West. Rain and higher-elevation snow will spread over parts of California. The flow of moisture will create heavy rain over parts of Southern California. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of Southern California through Sunday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and burn scars the most vulnerable. In addition, the moisture will aid in creating heavy snow over the Sierra Nevada Mountains and the higher elevations of Wyoming, Nevada, Colorado, Utah, and Arizona through Monday. On Sunday, the threat of excessive rainfall decreases slightly to a Moderate Risk over parts of Southern California and Arizona through Monday morning. The associated heavy rain will create localized areas of flash flooding, affecting areas that experience rapid runoff and burn scars. Further, rain will continue over parts of Southeastern California and Arizona through Monday. Furthermore, low pressure over parts of the Middle Mississippi and Ohio Valleys will move eastward off the northern Mid-Atlantic Coast by Sunday morning. The energy will produce snow over the Upper Great Lakes through Sunday morning. Additionally, showers and thunderstorms will develop over the Middle Mississippi and Ohio Valleys through Monday. The SPC has issued a Marginal Risk (level 1/5) of severe thunderstorms over parts of the Middle Mississippi and Ohio Valleys through Monday morning. The hazards associated with these thunderstorms are frequent lightning, strong to severe thunderstorm wind gusts, hail, and a few tornadoes. Elsewhere, low pressure over Eastern Canada will slowly move northeastward farther into Canada by Saturday evening. Light snow will linger over parts of Northern Maine through Saturday afternoon. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php