The featured graph is a time series from the Spencer airport sensor showing air temps, wind speeds, and visibility distance. The morning hours saw a round of snowfall followed by improving conditions where temperatures rose to above freezing in many locations followed by a frontal passage with rapidly deteoriating conditions followed by a decrease in wind speeds with improving visibilities by bitterly cold temperatures. All of that makes for quite the weather day! The next winter storm will be here this evening already!

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Tags:   coldfront