FXUS01 KWBC 051955 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 254 PM EST Tue Mar 05 2024 Valid 00Z Wed Mar 06 2024 - 00Z Fri Mar 08 2024 ...Heavy snow over parts of Northern/Central Rockies... ...There is a Slight Risk of excessive rainfall over parts of Southern New England/northern Mid-Atlantic on Wednesday... ...There is a Slight Risk of severe thunderstorms over parts of the Southern Plains on Thursday... Low pressure along the northern Mid-Atlantic Coast will move northeastward into Southeast Canada by Wednesday morning. The low will develop light rain over New England through Wednesday morning. Additionally, a front extending from the Lower Great Lakes to the Southern Plains will move eastward off the East Coast by Thursday evening. Moisture pooling along the front will aid in developing showers and thunderstorms over parts of the Lower Mississippi Valley northeastward to the Lower Great Lakes through late Tuesday evening. Overnight Tuesday, the showers and thunderstorms will be over parts of the Central Gulf Coast and Southeast. The showers and thunderstorms will move off the Southeast Coast overnight Wednesday. Further, light rain will develop over parts of the Ohio Valley into parts of the Northeast by Wednesday morning. On Wednesday, the system will produce rain over parts of the Northeast and Mid-Atlantic. The rain over Southern New England/northern Mid-Atlantic will be heavy. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of Southern New England/northern Mid-Atlantic from Wednesday through Thursday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable. On Thursday, rain will continue over parts of New England, with snow over northern Maine. Moreover, a wave of low pressure along a front over the Northern/Central Rockies will produce heavy snow over parts of the area through Wednesday. The associated boundary will linger through late Wednesday afternoon, producing light snow at the higher elevations. In addition, weak onshore flow will aid in creating light rain over parts of Northern California through late Wednesday night. Overnight Tuesday, the onshore flow will move southward, producing rain over parts of Central California through early Thursday morning. Moreover, the onshore flow will move southward over Southern California, creating light rain through Thursday evening. Furthermore, the wave of low pressure moves eastward into the Northern Plains by Wednesday morning and into Central Canada by Thursday. On Wednesday, the low will produce light to moderate snow over parts of the Northern Plains and the Upper Mississippi Valley. The associated front will move southeastward over the Central Plains into the Southern Plains by Thursday. On Thursday, the boundary will create showers and severe thunderstorms over parts of the Southern plains. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Southern Plains on Thursday. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$