647 FXUS01 KWBC 151847 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 245 PM EDT Thu Oct 15 2026 Valid 00Z Fri Oct 16 2026 - 00Z Sun Oct 18 2026 ...There is a Moderate Risk (level 3/4) of excessive rainfall over parts of the Southern Plains on Thursday... ...There is a Slight Risk (level 2/5) of severe thunderstorms over parts of the Ohio Valley on Thursday... ...There is a Slight Risk (level 2/5) of severe thunderstorms over parts of the Mid-Atlantic on Friday... Low pressure over the Middle Mississippi Valley will move northeastward to the Canadian Maritimes Provinces by late Friday evening. Moisture from the Gulf will pool along and ahead of the front over the Southern Plains, producing showers and thunderstorms with heavy rain on Thursday. Therefore, the WPC has issued a Moderate Risk (level 3/4) of excessive rainfall over parts of the Southern Plains on Thursday through Friday morning. Numerous flash flooding events are possible. In addition, many streams may flood, potentially affecting larger rivers. The flooding may include debris flows in or near recently burned areas. Rain will develop over parts of the Upper/Middle Mississippi Valley on Thursday, then move into the Great Lakes overnight Thursday and into the Northeast on Friday. Wet snow will develop over parts of the Northeast/Lower Great Lakes on Saturday morning. The SPC has also issued a Slight Risk (level 2/5) of severe thunderstorms over the Ohio Valley Thursday through Friday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. The threat of severe thunderstorms moves eastward on Friday as the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Mid-Atlantic Friday through Saturday morning. Hazards associated with these thunderstorms include frequent lightning, severe thunderstorm wind gusts, a few tornadoes, and a minimal threat of hail. Also on Friday morning, rain will continue over parts of western Texas with showers and thunderstorms near the Gulf Coast. The rain will move into the Central Appalachians by Friday afternoon and into the Mid-Atlantic by Friday evening. On Friday evening, showers and thunderstorms will develop over parts of Florida. The rain mainly ends over most of the Northeast. However, light wet snow will develop over higher elevations in the Northeast. Rain will move into the Carolinas by Saturday morning. Lastly, a front will move onshore over parts of the Pacific Northwest by Saturday morning, producing light rain in parts of the area. Rain showers will develop over parts of the Southwest Friday afternoon into Saturday. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$