Dangerous torrential rainfall and flash flooding are underway in the mid-Atlantic and Northeast Thursday with millions at risk along the Interstate 95 corridor. It’s shaping up to be another serious flood event in a summer that’s been full of them.

Heavy rain created hazardous road conditions in parts of Colorado as severe weather moved through the area. Advertisement. About Our Ads

A warmer atmosphere can hold more moisture, making storms capable of unleashing huge amounts of rain over land. Studies have shown that for every degree Fahrenheit that the planet heats up, the atmosphere can hold around 3% to 4% more moisture. As a result, flooding risks across the country are expected to increase in the coming years.

Water poured down into metro stations and shot up from the roads like geysers as the Northeast saw major flooding on Thursday.

However, when you're talking about water temperatures during hurricane season, that's not a good combination. And water temperatures from the coast of Africa to the Gulf and southwestern Atlantic are at or above 80 degrees, which supports tropical development, according to AccuWeather.

Hurricane Gil weakened into a tropical storm in the eastern Pacific Ocean on Saturday and was not forecast to threaten land. The Miami-based U.S. National Hurricane Center said the storm's maximum sustained winds dropped to 70 mph (110 kph).