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What color is lightning?

Lightning takes on a range of colors, depending on conditions in the clouds and in the air.

Blue lightning within a cloud indicates the presence of hail.

Red lightning within a cloud indicates the presence of rain.

Yellow or orange lightning occurs when there is a large concentration of dust in the air.

White lightning is a sign of low humidity (amount of moisture in the air). White is the color of lightning that most often ignites forest fires.

Sources: Burroughs, William J., et. al. The Nature Company Guides: Weather, p. 240; Field, Frank. Doctor Frank Field's Weather Book, p. 201.

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   2. What are the highest and lowest recordea temperatures on Earth?
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   4. Why are the horse latitudes called by that name?
   5. What are jet streams and when were they discovered?
   6. What is the dew point and how does dew form?
   7. When does frost form?
   8. What is the heat index?
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   12. What are the four major cloud categories, based on height in the sky?
   13. What is the Beaufort Scale?
   14. Is Chicago the windiest city?
   15. What is a chinook?
2. Precipitation And Thunderstorms
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   2. How much water is there in an inch of snow?
   3. Is it ever too cold to snow?
   4. Can two snowflakes be alike?
   5. What is the difference between freezing rain and sleet?
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   7. Where is the rainiest place on Earth?
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   10. What is ball lightning?
   11. What color is lightning?
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   13. How many volts are in lightning?
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