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The sky is green in South Dakota and we’re kind of freaking out

Severe thunderstorms in South Dakota have turned the sky above Sioux Falls green and the photos are incredible and super creepy.

Sioux Falls locals have witnessed a rare kind of thunderstorm called a derecho which has reached South Dakota, turning the sky an eerie green.

According to the National Oceanic and Atmospheric Administration (NOAA) a derecho is a widespread wind storm that usually coincides with thunderstorms and typically extends more than 380 kilometres.

green sky
Credit: Greg Johnson/ Twitter

While the phenomenon is very rare it’s actually the second time it has occurred in South Dakota this year and at one point left close to 30,000 people without power.

I know what you’re thinking, there’s got to be a filter on these pictures right? Wrong! 

According to Snopes fact-checking, the photographs that have surfaced of the Stranger Things-esk atmosphere are completely real.

The derecho that was seen on Tuesday travelled almost 1,850 kilometres, impacting roughly half a dozen states with winds reaching over 144 km per hour.

Even though South Dakota had recently seen a derechos, apparently it’s uncommon for the sky to actually turn grinned according to AccuWeather, it’s still unclear why it has.

The weather broadcasters speculated that it may be due to the time of day that the thunderstorms occurred. When thunderstorms like this take place later in the day as the sun is closer to the horizon, the spectrum of light changes from blue to red. 

derecho
Credit: AP

The thunderclouds appear to have a blue light because of the water droplets and when that mixes with the red sunlight, the resulting colour is green according to AccuWeather.

If you remember what you learned in primary school about the faithful colour wheel, that doesn’t quite add up so, without sending you into a panic, something freaky deaky must be going on.

Hopefully, it’s not actually the end of the world but just in case, maybe get stuck into that bucket list of yours.