John Wheeler, WDAY, Published November 18 2013
Weather Talk: Greater variety of weather occurs in cooler monthsEight days ago, the temperature in Fargo-Moorhead was just 19 degrees. Two days later, it spiked to 61 for a short while in the afternoon, just ahead of a cold front.
Temperature swings such as this are relatively common during the late fall, winter and spring but quite rare in summer. During the cooler months of the year, there is a much greater temperature contrast between the tropics and the Arctic.
This greater difference creates a greater variety of weather. It also potentially allows for larger, more powerful storm systems and fronts to move these varying kinds of weather around. So we get greater changes in day-to-day weather.
If the pattern becomes stable, and the different sorts of weather stay in place, winter weather can become stagnant. But we rarely have to wait too long before the wind shifts and we get a big change in the weather.
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