Daryl Ritchison, WDAY, Published February 10 2014
Weather Talk: Melt-and-freeze cycle will create icy roads, potholesThe lack of snow in the past couple of weeks has made for excellent travel conditions on the main roads, but many city streets and parking lots remain ice-covered. That will likely be changing soon and not necessarily for the reason you may think.
The one obvious reason for ice melting off pavement would be a rise in air temperatures, but there is another more subtle reason: sunlight. As the sun angle slowly increases, you will notice that even when it is well below freezing, melting will take place on roads on sunny days.
There is a problem, though. The melting that occurs on sunny days refreezes nearly every night creating slippery ice. The melt-and-freeze cycle also creates another common problem in late winter: potholes.
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