562 FXUS01 KWBC 080813 PMDSPD Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 413 AM EDT Wed Jul 08 2026 Valid 12Z Wed Jul 08 2026 - 12Z Fri Jul 10 2026 ...There is a Slight Risk (level 2/5) of severe thunderstorms over parts of the Central Plains, Upper/Middle Mississippi Valley on Wednesday... ...There is a Slight Risk (level 2/5) of severe thunderstorms over parts of the Ohio Valley/Middle Mississippi Valley and Central/Southern High Plains on Thursday... ...There is a Slight Risk (level 2/4) of excessive rainfall over parts of the Upper Great Lakes/Upper Mississippi Valley and the Middle Mississippi Valley/Central Plains on Wednesday and over parts of the Ohio/Middle Mississippi Valley on Thursday... ...Dangerous Heat Continues Across the Southeast and Southwest... Across the Southeast, hot and humid conditions will persist and likely intensify through midweek. Above-normal temperatures, high humidity, and warm overnight lows will continue to increase the risk of heat-related illnesses, especially for those without access to adequate cooling or hydration. Temperatures will also remain above normal across portions of the Southwest, where Excessive Heat Warnings and Heat Advisories remain in effect across parts of Arizona and southern California. A front extending from the Upper Midwest to the Central Plains and then northwestward to the Northern High Plains will slowly sink south and eastward to the Northeast to the Great Lakes to the Central Plains and then northward to the Northern Plains by Thursday evening. The boundary will produce showers and severe thunderstorms from the Upper/Middle Mississippi Valley to the Central Plains on Wednesday. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Upper/Middle Mississippi Valley to the Central Plains through Thursday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Heavy rain associated with the showers and thunderstorms will produce heavy rain over parts of the Upper/Middle Mississippi Valley to the Central Plains through Thursday morning. The WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Upper/Middle Mississippi Valley to the Central Plains on Wednesday. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas being the most vulnerable. In addition, showers and thunderstorms will develop over parts of the Mid-Atlantic/Central Appalachians, into the Southern Ohio/Tennessee Valleys, the Lower Mississippi Valley, and parts of the Southern Plains. On Thursday, as the front sags southward, showers and severe thunderstorms will develop over parts of the Ohio Valley/Middle Mississippi Valley. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Ohio Valley/Middle Mississippi Valley from Thursday through Friday morning. through Thursday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Additionally, the showers and thunderstorms will produce heavy rain. Therefore, the WPC has issued a Slight Risk (level 2/4) of excessive rainfall over parts of the Ohio Valley/Middle Mississippi Valley from Thursday through Friday morning. The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, small streams, and low-lying areas being the most vulnerable. A second area of showers and severe thunderstorms will develop over the Northern/Central High Plains. Therefore, the SPC has issued a Slight Risk (level 2/5) of severe thunderstorms over parts of the Northern/Central High Plains from Thursday into Friday morning. The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and a few tornadoes. Elsewhere, an influx of moisture over the Southwest, the Great Basin, and the Southern Rockies will trigger showers and thunderstorms from late afternoon into the late evening on Wednesday and Thursday. Additionally, a second front extending from the Mid-Atlantic to the Southern Plains will produce showers and thunderstorms over the Southeastern portion of the country through Thursday. Ziegenfelder Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php $$