Eerie is an understatement… 

The South Dakota city of Sioux Falls turned GREEN as a result of an unusual storm.

Credit: Twitter/@jkarmill

Hail the Size of Softballs 🌨

Severe winds of over 150 mph hit the city of Sioux Falls in addition to an intense hailstorm with hail the size of softballs!

The National Weather Service The storm passed through South Dakota, Minnesota and Iowa, causing nearly 30,000 people to be without power for hours, according to the National Weather Service.

Credit: South Dakota Department of Transportation

The storm reached winds close to 100 mph

The storm is called a ‘derecho,’ and is quite common to Midwesterners.

A ‘derecho,‘ is a widespread, long-lived wind storm that is associated with a band of rapidly moving showers or thunderstorms. Although a derecho can produce destruction similar to the strength of tornadoes, the damage typically is directed in one direction along a relatively straight swath, according to the National Weather Service.

Storms are classified as derechos if they have winds over 57 mph and leave a path of damage almost 250 miles long, according to the National Weather Service.

The rare conditions of the derecho turned the sky to a mysterious, glowing green as it spanned across hundreds of miles.

The entire city look like a scene from ‘Goosebumps!’

Why Did the Sky Turn Green?

It’s not fully understood why the green skies occurred, but most scientists believe the liquid water content in the air has something to do with it…

The celestial phenomenon occurs when clouds carry a lot of water and allow primarily blue light to pass through the storm cloud.

Supposedly, the blue light mixes with the sun’s red light, and the sky turns green…

I don’t know about you, but last time I checked, Blue + Yellow make green… Red and blue make purple…

Meteorologists Respond

Matthew Cappucci, a meteorology correspondent from the Washington Post reported the green skies are caused by a “confluence of water-rich clouds and the time of day.”

Water droplets in the clouds retain blue light while the late afternoon sun blankets the land in red/yellow light.

National Weather Service meteorologist, Cory Martin,  said that “thunderstorm clouds can glow green when the red light of the sun at the end of the day interacts with the water or ice content in the storm.”

 

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