Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 320 PM EST Wed Mar 06 2024 Valid 00Z Thu Mar 07 2024 - 00Z Sat Mar 09 2024 ...Heavy snow over parts of Central Rockies Thursday night into Friday and snow over northern Maine... ...There is a Slight Risk of excessive rainfall over parts of Southern New England and northern Mid-Atlantic through Thursday morning... ...There is a Slight Risk of excessive rainfall over parts of the Lower Mississippi Valley/Southeast/Southern Appalachians on Friday... ...There is a Slight Risk of severe thunderstorms over parts of the Southern Plains into the Lower Mississippi Valley Thursday into Friday... A front extending southward along the East Coast moves eastward off the East Coast by Thursday evening. Moisture pooling along the front will aid in developing heavy rain over parts of the Northeast and Mid-Atlantic. Therefore, through Thursday morning, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of Southern New England/northern Mid-Atlantic. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable. Rain will continue over parts of New England into the Mid-Atlantic Coast on Thursday evening. Snow will also develop over northern Maine and patches of rain/freezing rain over parts of northeastern New York State into parts of Northern New England. Moreover, a second front extending from the Upper Midwest to Southern California will move eastward to the Great Lakes to the Southern Plains by Friday evening. The system will produce snow from the Upper Mississippi Valley to the Central High Plains and a broader region of snow over parts of the Great Basin/Southwest/Central Rockies and Northern Intermountain Region through Thursday evening. Additionally, rain will develop over parts of California through Thursday evening. Furthermore, a wave of low pressure over Southern California on Wednesday evening moves eastward to the Central/Southern Rockies by Thursday evening. The circulation around the low will aid in creating heavy snow over the Central Rockies through Friday evening. Additionally, snow will develop over parts of the higher elevations of the Southwest and Southern Rockies. By Thursday evening, the front will move into parts of the Southern Plains, producing showers and severe thunderstorms. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Southern Plains on Thursday into Friday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. On Friday, the associated front moves to the Middle Mississippi Valley into the Southern Plains. Moisture will pool along the boundary, producing heavy rain over parts of the Lower Mississippi/Tennessee Valleys, Southeast, and Southern Appalachians. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Lower Mississippi/Tennessee Valleys, Southeast, and Southern Appalachians on Friday. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable. Also, on Friday, the front will create showers and severe thunderstorms over parts of the Southern Plains, Lower Mississippi Valley, and Central Gulf Coast. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Southern Plains, Lower Mississippi Valley, and Central Gulf Coast on Friday. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Elsewhere, on Friday, an approaching front will create rain over parts of the Pacific Northwest Coast. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php