It took until the 20th day of November to breach 60 degrees for places like Des Moines. Strong south/southwesterly winds helped to push temperatures finally well above normal. The featured chart is a wind rose and looks at wind speeds and directions during November when the air temperature is at or above 60 degrees for Des Moines. The wind rose is a wonderful way to see direction and speed frequencies. The longest bars coincide with what we experienced yesterday, which were winds from the SSW. Of course, not many occurrences of NW winds are shown as that is typically a source of cold air.

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Tags:   nov