SIOUX FALLS, SD -
Over the past 12 straight days, the Storm Prediction Center placed parts of KELOLAND into one of its severe weather risk categories. Most of these forecasts really came together but that doesn't mean some in southeastern South Dakota won't have to water their plants.
Friday, we had a large storm system rumbling east during the overnight hours. Just after crossing the Missouri, the rains dissipated quickly. Sunday, we had all the pieces come together for severe weather. Peak heating met instability, moisture and crossing winds in our northeastern counties.
The coming pattern for Monday night is not quite as pronounced. We do have another stalling front right at our border that will once again cross from southwest to northeast and will focus rains to the north.
A recent pattern we've seen a lot of is overnight storm clusters that often form here and track eastwards. They catch a southerly wind feature that fertilizes storm growth and that looks like it could form once again Monday evening.
Some in the south have remained dry due to a capped atmosphere; at cloud level, it literally becomes too warm for anything to form unless we get something else to spark storms. Last night in Watertown that extra help came from dying storms; you can see that ripple feature on the slowed-down radar.
Once new drought monitors are released, we'll have a better picture at who needs moisture.
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