DISCUSSION: As we look back to a few days more than 10 years ago today, we arrive at a fairly historic and memorable day in South Dakota state weather history. Between 5 and 6 May 2007, a large upper-level low pressure system gradually moved across portions of the north-central United States. The progression of this low pressure system across the north-central United States, acted as a catalyst for a long-duration heavy rainfall event across the region due to a combination of strong warm air advection and enhanced lift within the warm sector of the aforementioned low pressure system. As you can see in the image attached above as well as the radar animation linked to the webpage tagged in the next sentence, there was a classic north-to-south training event which unfolded and facilitated this heavy rainfall event. To learn more about this flooding event, feel free to click on the following link.
To learn more about other past historic weather events from around the world, be sure to click here!
©2017 Meteorologist Jordan Rabinowitz