There is a Moderate Risk of excessive rainfall over parts of theCentral/Southern Plains on Saturday......Heavy snow over the Central Rockies......There is an Enhanced Risk of severe thunderstorms over parts of theMiddle/Lower Mississippi Valley and Central/Southern Plains...Low pressure over Central Plains will move northeastward into East-CentralCanada by Sunday morning. A second low develops over the Southern HighPlains by Saturday morning and likewise, move northeastward to the MiddleMississippi Valley by Sunday. Showers and severe thunderstorms willdevelop east of the dryline. Therefore, the SPC has issued an EnhancedRisk (level 3/5) of severe thunderstorms over the Middle/Lower MississippiValley and Central/Southern Plains through Saturday morning. The hazardsassociated with these thunderstorms are frequent lightning, severethunderstorm wind gusts, hail, and a few tornadoes. In addition, there isan increased threat of EF2- EF5 tornados and hail greater than two inchesover the Region.Moreover, heavy rain will be associated with these storms. Therefore, theWPC has issued a Slight Risk (level 2/4) of excessive rainfall over theMiddle/Lower Mississippi Valley and Southern Plains through Saturdaymorning. The associated heavy rain will create mainly localized areas offlash flooding, with urban areas, roads, small streams, and low-lyingareas the most vulnerable. Heavy snow will develop over the higherelevations of the Central Rockies overnight Friday into Saturday.On Saturday, the threat of severe thunderstorms continues, while thethreat of excessive rainfall increases over parts of southeastern Kansas,southwestern Missouri, Oklahoma, and northeast-central Texas. Therefore,the SPC has issued an Enhanced Risk (level 3/5) of severe thunderstormsover the Middle Mississippi Valley and Central/Southern Plains fromSaturday into Sunday morning. The hazards associated with thesethunderstorms are frequent lightning, severe thunderstorm wind gusts,hail, and a few tornadoes. In addition, there is an increased threat ofEF2- EF5 tornados and hail greater than two inches over the Region.Furthermore, heavy rain will be associated with these storms. Therefore,the WPC has issued a Moderate Risk (level 3/4) of excessive rainfall overparts of the Middle Mississippi Valley and Central/Southern Plains. Theassociated heavy rain will create numerous areas of flash flooding.Furthermore, many streams may flood, potentially affecting larger rivers.On Sunday, the threat of excessive rainfall decreases slightly. Therefore,the WPC has issued a Slight Risk (level 2/4) of excessive rainfall overthe Middle/Lower Mississippi Valley and Southern Plains on Sunday. Theassociated heavy rain will create mainly localized areas of flashflooding, with urban areas, roads, small streams, and low-lying areas themost vulnerable.Similarly, the threat of severe thunderstorms decreases slightly onSunday, too. Therefore, the SPC has issued a Slight Risk (level 2/5) ofsevere thunderstorms over parts of the Middle/Lower Mississippi Valley andCentral/Southern Plains on Sunday. The hazards associated with thesethunderstorms are frequent lightning, severe thunderstorm wind gusts,hail, and a few tornadoes.Meanwhile, upper-level troughing over the western third of the country andonshore flow will produce rain and high elevation snow over parts ofPacific Northwest, California, Great Basin, Northern Intermountain Region,and Southwest through Saturday morning. The low elevation rain and higherelevation snow continues over parts of the Northern/Central Rockiesthrough late Saturday night. On Sunday, the rain and higher elevation snowreturns to the Pacific Northwest.