Monthly Archives: February 2011

Why do Bridges Ice before the Road?

Posted on February 28, 2011 by Weather Guys Editor

Living in a cold climate, we are used to seeing signs that say “bridge freezes before road.” The fundamental reason is that a bridge hangs above the ground, while the roadway rests on the ground. Water on a road or bridge will freeze once the surface becomes colder enough. So, the road must cool faster than the roadway. Continue reading →

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What is the Coldest Wind-Chill Temperature Ever Recorded in Madison?

Posted on February 20, 2011 by Weather Guys Editor

The wind-chill temperature describes the increased loss of heat by the movement of the air. The wind-chill is relevant to humans and other animals that need to maintain a constant temperature that is higher than their surroundings. Continue reading →

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How Much does Snow Evaporate?

Posted on February 13, 2011 by Weather Guys Editor

I notice that when the snow builds up in my patio, it starts to evaporate after a few days, even though the temperature is still below freezing. On average, what percentage of our snowfall each year evaporates back into the cold, dry air? Continue reading →

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Is shoveling snow dangerous?

Posted on February 7, 2011 by Weather Guys Editor

At least one death in Milwaukee and one death in Iowa were attributed to shoveling snow during this recent snowstorm. A study of the number and cause of deaths in Massachusetts immediately after six blizzards showed a 22 percent increase in heart related deaths following a blizzard. Continue reading →

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