National Weather Service United States Department of Commerce

Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Showers and thunderstorms are likely through Thursday producing widespread 1-2 inches of rainfall with pockets of heavier amounts. Locally strong storms to severe storms could also produce gusty winds late this afternoon and this evening.
Another day of heat is expected with high temperatures climbing into the 90s over much of the area. The warmest temperature and highest humidity combination will be over southeast Missouri and southwest Illinois where afternoon and early evening heat indexes will climb to around 105 degrees where a heat advisory is in effect.