Blue Skies, but Why?

news image
Special Stories
24 Jan 2018 6:06 AM
BLUE SKY On days like this, and I know I do You may just wonder what makes the sky blue It’s really quite simple but harder to say First was described by the math guy Rayleigh It seems like air molecules small as they are Will scatter the light from our nearest star The shorter the wavelength in the spectrum of light The more it will scatter into our eyesight Mostly the blue light is scattered around That’s what we see from here on the ground Of course all of this may not be earth shattering Blue skies are blue do to Rayleigh scattering -Mike Morrison   Nothing nicer, even to a weather forecaster, than blue skies and sunshine. The sunlight from our nearest star is made up of numerous colors of various wavelengths when combined together gives us the bright “white” light that brightens our days. The blue skies that we see are actually courtesy of the atmosphere surrounding the earth.   The earth’s atmosphere acts as a diffuser and scatters light from the sun.  Longer wavelengths of the visible spectrum will scatter less than shorter wavelengths. The result of this diffusion we call Rayleigh Scattering. This is the scattering of light or other electromagnetic radiation by particles much smaller than the wavelength of the radiation. The molecules of air in our atmosphere are smaller than the wavelength of the visible wavelengths of sunlight which is perfect for Rayleigh Scattering. These air molecules will scatter sunlight in all directions.  The shorter wavelengths of blue light is scattered more than longer wavelengths.  That is why the air above us looks blue. So why isn’t the sky colored violet?  The sky is not violet because sunlight is weaker in violet spectrum compared to blue spectrum and the eye is less sensitive to violet light. The best environment for blue skies is high pressure and dry, clean air through a deep part of the atmosphere.  This setup in the atmosphere reduces another type of light scattering know as Mie Scattering which will dull a brilliant blue sky to a milky blue.
All Weather News
More
Fronts Continue To Spark Severe Weather Across the Plains

Fronts Continue To Spark Severe Weather Across the Plains

A cold front that brought record lows to the

18 Jul 2025 10:40 PM
Extreme Heat Impacts for the East Coast & South

Extreme Heat Impacts for the East Coast & South

Extreme heat continues to impact several area

18 Jul 2025 10:05 PM
Flooding Threat Remains Elevated in the East

Flooding Threat Remains Elevated in the East

A cold front pushing through the Eastern Seab

18 Jul 2025 9:10 PM
EF-2 Firenado from the Deer Creek Fire in Utah

EF-2 Firenado from the Deer Creek Fire in Utah

A fire tornado was spotted near La Sal, Utah

18 Jul 2025 7:30 AM
Tropical System Brings Flood Risk to the Central Gulf

Tropical System Brings Flood Risk to the Central Gulf

Time has run out for notable tropical develop

18 Jul 2025 3:05 AM
Heavy Rain, Flooding Threat Returns to Florida

Heavy Rain, Flooding Threat Returns to Florida

Keep the rain boots handy in Florida - heavy

13 Jul 2025 12:50 PM
Severe Storm Risk Pushes into the Great Lakes, Ohio Valley

Severe Storm Risk Pushes into the Great Lakes, Ohio Valley

Friday was another busy day with severe weath

12 Jul 2025 8:00 PM