According to readings from the Seek Reveal, the ground temperature was 13 degrees F. Below are two images of the sky recorded at 4:30 PM MST and 5:15 PM MST. Snowfall began shortly before the second image was recorded.
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| At 4:30 PM, the stratus clouds over NearSys Station were 9 degrees colder than the ground. Assuming a dry adiobatic lapse rate of 5.4 degrees per thousand feet, the clouds were 1,600 feet above NearSys Station. |
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| Forty-five minutes later, the clouds were 5 degrees warmer. Therefore, the cloud height deceased to 700 feet above NearSys Station. That's a decrease of 900 feet in 45 minutes or 20 feet per minute. Is it normal for clouds to decrease their height before precipitation begins? More testing is called for. |
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