1. Meanwhile, isolated storms will form in the Middle West as an approaching cool front interacts with increasingly humid air. 2. Potent storms will also develop in the northern Plains as a front interacts with a jet stream disturbance. 3. Some moderate to locally heavy thunderstorms are possible Thursday in parts of southern Florida as a front interacts with warm, humid air. 4. Thunderstorms will also develop in the southern Mississippi Valley on Monday as the same front interacts with an upper-level disturbance and humid surface air. 5. Thunderstorms will speckle parts of Florida Saturday as a weak front interacts with sultry air. |