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www.reference.com/science/sky-turn-yellow-before-storm-2...

Scientists' best theory for why the sky sometimes changes to a yellow or greenish hue before a severe storm is that storm clouds of a certain thickness and water concentration act as a filter for the light that passes through them, according to The Guardian.

earthsky.org/earth/why-does-the-sky-change-color-before-a...

Experts don’t agree on why the sky changes color before a tornado or severe thunderstorm. At least two theories suggest what might be the reason for the strange greenish-yellow color that ...

weather.com/science/weather-explainers/news/green-sky...

You may have seen an approaching thunderstorm turn parts of the sky a rather creepy shade of green or bluish green. One example of a green sky was seen in the western suburbs of St. Louis on ...

answers.yahoo.com/question/index?qid=20080606182041AAZBJsY

The "greenage" which some times appears to look yellow, occurs in very strong storms which is a sign that the storm can contain large hail, damaging winds, and yes, even tornadoes. When the sky turns an abnormal color during a storm you know it is strong, serious, and in some cases deadly.

earthscience.stackexchange.com/questions/86/does-a-green...

So to sum all of this up: we know that thunderstorms sometimes create a green sky. However, there is no evidence to prove that a green sky is a sure sign of a tornado or hail. It is however a warning sign, as it shows that a thunderstorm is most likely coming, and it could be a strong storm.

www.reddit.com/r/NoStupidQuestions/comments/3i9nn8/why...

Why does the sky turn yellow sometimes around a big storm? Why does the sky turn yellow sometimes around a big storm? (self.NoStupidQuestions) submitted 3 years ago by elencus. ... I always imagined those memories were exaggerated since a yellow sky is a rather odd thing, but maybe my memory is more accurate than I thought. ...

www.egofelix.com/why-does-the-sky-turn-a-strange-color...

No one knows for sure – but there are a couple of theories about that weird greenish-yellow color you see before a storm. Storm clouds themselves may help make the color green — or the storm may just act to provide a dark backdrop, so that you can see the color. Why does the sky turn a strange color before a tornado? Here’s one idea.

www.answers.com/Q/What_colours_does_the_sky_turn_before_a...

The sky does not turn any particular color. Most often it will be gray, but it may turn black, green, or yellow as well depending on the orientation of the parent storm and the time of day.

www.express.co.uk/news/uk/867026/Yellow-sky-red-sun-UK...

End of world: Why is the sky glowing a sickly YELLOW over Britain RIGHT NOW? BRITAIN has been shrouded in a warm glow as the sky turns yellow and the sun glows red in what some fear is the end of ...

nssl.noaa.gov/education/svrwx101/thunderstorms/faq

Winter thunderstorms do happen, but they are rare because the air is more stable. Strong updrafts cannot form because the surface temperatures during the winter are colder. Why does the sky sometimes turn orange after a thunderstorm? Most thunderstorms occur in the late afternoon. By this time of day, the sun is beginning to set.