The featured chart is from the excellent precipitable water climatology page on the Rapid City, SD NWS website. The chart displays the observed monthly ranges of the amount of water in the atmosphere. On Monday evening, the Davenport sounding had well over 2 inches of water observed, which is near the maximum end of the range. All of this water in the atmosphere makes for efficient rainers as slow moving storms are able to quickly process all of that water in the column.

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Tags:   sounding