reporter: doctors tell us the best thing to avoid a problem is dress in light clothing. don t go outside unless we have to, and of course drink plenty of water. rob and peggy? the ultra-hot conditions are also taking a toll on roads especially in the midwest. repair crews had to scramble to fix two lanes on a busy highway in st. louis. it buckled in the heat and backed up traffic for miles. the heat wave is putting the squeeze on this year s tomato crops. wild tomatoes need heat to thrive. too much of it dramatically cuts down production. complaining that their first re crop only yielded half as many tomatoes as usual. we ll see that reflected at the closely store i m. strong storms with a chance of storm montana to minnesota and also ohio. thunderstorms from mobile to memphis, birmingham and new orleans. scattered showers in maine and florida. don t make me laugh. heavy rain in the four corners region of the southwest. phoenix is the hot spot at 106.