Severe weather impacting millions across the country. NBC News’ Aaron Gilchrist reports tonight from Tennessee where deadly flooding has killed four people. The flood emergency comes as wildfires continue to burn out west,

A westward-moving tropical wave could produce an area of low pressure in the tropical Atlantic late in the week of Aug. 18, the hurricane center said on Aug. 16. The center shows a 20% chance of storm formation over the next week.

More storms are possible tonight, but conditions are expected to be dry and muggy during the afternoon hours. Dew points will be near 70, meaning any storms that may develop will have lots of energy for torrential downpours. This means ponding and urban flooding are also possible.

The roof of a suburban apartment building was torn to pieces by severe thunderstorms storms that swept through the Chicago area Saturday afternoon.

Pleasant summer weather will stick around Friday in Northeast Ohio before heat and humidity build this weekend ahead of an approaching cold front.

Multiple rounds of thunderstorms expected to bring heavy rainfall, threatening flash floods across southern Wisconsin counties through Sunday morning

SUNDAY: Isolated storms are possible, especially out in the plains. Gusty winds and light to moderate rainfall is expected. Another day of 80s and 90s is expected too. NEXT WEEK: Monday will bring in isolated storms for some too. Southern Colorado stays hot and seasonal for most of the week with a drier mid-week expected.

Massachusetts is finally going to be getting some respite from the hot, muggy weather we have been having later next week, but before that, there is a possibility of strong to severe thunderstorms on Sunday afternoon into the evening.