Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 345 AM EDT Thu Mar 31 2022 Valid 12Z Thu Mar 31 2022 - 12Z Sat Apr 02 2022 ...Severe thunderstorms and excessive rainfall threat on Thursday over parts of the East Coast... ...Light snow over the Upper Great Lakes and the Rockies... ...There is an Elevated Risk of fire weather over parts of the Florida Peninsula on Wednesday... A strong front from the Great Lakes to the Central Gulf Coast moves eastward off most of the East Coast by Friday morning. The boundary will produce showers and thunderstorms from the Great Lakes to the Central Gulf Coast; some of the thunderstorms will be severe. Therefore, the SPC has issued a Slight Risk of severe thunderstorms from parts of the Northeast to the Southeast/Central Gulf Coast through Friday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Moreover, due to the associated heavy rain, the WPC has issued a Marginal Risk of excessive rainfall over two regions; parts of the Northeast/Northern Mid-Atlantic and the Southeast, through Friday. The associated heavy rain will create localized areas of flash flooding, affecting areas that experience rapid runoff with heavy rain. On Thursday, snow will develop over parts of the Upper Mississippi/Upper Great Lakes to parts of the Middle Mississippi Valley. Overnight Fr Thursday, the light snow will move into parts of the Ohio Valley, Central Appalachian, and the Lower Great Lakes. Light rain over parts of New England to the Mid-Atlantic will end by Friday night. Lake effect snow will develop downwind from the Lower Great Lakes with upslope flow snow over parts of the Central Appalachians and Northern New England, ending mainly by Saturday morning. Meanwhile, a second front extending from the Northern High Plains to the Great Basin will move eastward to the Middle Mississippi Valley and the Southern Plains by Saturday. The system will produce light snow over parts of the Northern/Central Rockies that will end by Friday evening. As the boundary moves onto the Plains, light rain and embedded thunderstorms will develop over parts of the Plains that will move into parts of the Mississippi Valley by Saturday morning. Furthermore, a third front will move onshore over the Pacific Northwest late Friday afternoon and move inland to the Northern Rockies by Saturday morning. The front will produce light rain over parts of the Pacific Northwest Friday evening into Saturday and light snow over parts of the Cascades on Saturday morning. In addition, the SPC has issued an Elevated Risk of fire weather over parts of the Florida Peninsula due to gusty winds, low relative humidity, and dry fuels on Thursday. Ziegenfelder Graphics are available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php