Washington starts Sunday warm and partly cloudy before a round of thunderstorms brings heavy rain and possible flooding into the evening.

Clouds break for a sunny Sunday in St. Louis before temperatures climb into the 90s and storm chances return later in the week.

Philadelphia could see late-day thunderstorms Sunday before a wetter, stormier Monday brings heavier rain and flash-flooding concerns.

Cloudy skies give way to a stormier Sunday afternoon in Columbus, with a 60% chance of rain and thunderstorms. The unsettled pattern sticks around through Saturday.

Cleveland faces heavy rain, thunderstorms, a flood watch and dangerous rip currents Sunday before a brief sunny break Monday.

Jacksonville faces a stormy Sunday with heavy downpours, gusty winds and a heat index near 100.

A tornado warning put downtown Indianapolis on alert Saturday, halting Gen Con as sirens sounded and storms tracked across central Marion County.

Detroit faces heavy rain, thunderstorms and a flood threat Sunday before sunshine returns for the start of the week.

Pittsburgh is under a Flood Watch Sunday as thunderstorms bring heavy rain, flash-flood risk and possible damaging winds.

Miami gets a hot, humid Sunday with thunderstorms likely and a heat index up to 106 degrees. Slow-moving downpours could trigger localized flooding.

Atlanta starts Sunday cloudy and muggy, with an 88°F high and afternoon thunderstorms possible. A wetter pattern takes over by Tuesday.

Raleigh faces an afternoon and evening storm threat Sunday, with heavy rain and localized flooding possible. More thunderstorms are likely through midweek.

A clear Orlando morning gives way to afternoon thunderstorms, gusty winds and a localized flooding risk Sunday. The unsettled pattern lasts through next weekend.