July 18th was another after-work chase day. The SPC had outlined a 5% tornado risk from Murdo, SD to Columbus, NE as a surface warm front was forecast to be draped across southern South Dakota. Scattered storms were expected along and south of the boundary.
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This wasn’t really an expected chase day for me. I knew storms were expected to form across eastern Colorado but it was a regular workday for me so I wasn’t expecting to go anywhere.
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Another local chase presented itself on June 18th as a low pressure was expected to meander across Central Nebraska with an attendant stationary front draped east/west north of Omaha with low 70° dewpoints pooling south of the front. Meanwhile a shortwave impulse was progged to track into northeastern Nebraska triggering scattered thunderstorms.
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June 17th and 18th presented a couple of relatively local chase opportunities in Nebraska for me. A surface low in northeastern Colorado and a stalled front extending east from there into Nebraska along the Platte River Valley presented a decent opportunity for severe weather.
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The final day of my 2018 chase vacation and it appeared that there might be a decent shot at some gorgeous storms in the Black Hills area of western South Dakota. I spent the previous night in Spearfish and sat around there for most of the morning waiting to see if I’d need to move south or not.
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