21.   A few isolated afternoon thunderstorms will form during the afternoon and evening, especially near the southern Appalachians.

22.   A few potent thunderstorms will also form in eastern Montana near evening.

23.   A few strong thunderstorms will form over the mountains of northern California and Oregon.

24.   A few thunderstorms will also form near a slow-moving front stretching from the western Dakotas to Nebraska.

25.   A few thunderstorms will form in the sultry air, particularly in Florida.

26.   A few thunderstorms will form over the Bitterroots.

27.   A few afternoon thunderstorms will form over the mountains of northern Arizona, eastern Nevada and southern Utah.

28.   A few isolated afternoon thunderstorms will form in the interior Southeast.

29.   A few isolated afternoon thunderstorms will form near the Texas and Louisiana coasts.

30.   A few potent thunderstorms will form in West Texas and along the eastern slopes of the southern Rockies.