On a given day in the winter in St. Louis, Missouri it began snowing in the morning. The snow changed to rain by noon, later in the afternoon sleet was falling which turned to snow, and by evening rain was freezing on bridges and roadways. Explain how suc

On a given day in the winter in St. Louis, Missouri it began snowing in the morning. The snow changed to rain by noon, later in the afternoon sleet was falling which turned to snow, and by evening rain was freezing on bridges and roadways. Explain how such a sequence of precipitation might occur.