How Do You Measure A Sunny Day?

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By By Steve Pool

SEATTLE - In Sept. 3's column, we talked about how Seattle is near the bottom in the U.S. with only an average of 58 sunny days a year. But it's not like a weather observer looks up at noon, sees the sun, and calls it a sunny day.

There are sensors that can actually measure when the sun is indeed shining on it. These sensors will track the number of seconds the sun was shining on it, and divide it by the number of seconds of daylight for that given day.

If the sun shone on the sensor for 70% or more of the day, it's considered a sunny day. If it was between 20-70% of the time, it was a partly cloudy day, and 20% or less, it's a cloudy day.

Your Photos

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The cloud bands around Mt. Rainier are a sure sign of changing weather conditions. These images of Mt. Rainier were taken Thursday evening around 7:30pm with a Nikon D3000
and a 200mm telephoto lens. The dark spots on the 1st image is flock of birds (not dirt on the lens).
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Grabbed a few images of Mt. Rainier between 6:30am and 7:30am
before the smoke from the fires rolled back in.
YouNews Bremerton Ghost (New) Bremerton Ghost
While conducting a basic ghost hunt on the USS Turner Joy, we captured what appears to be a face floating in the air.