Thursday 12th May 2022 - S Dakota (Moderate Risk)

We awoke in Sioux Falls and SPC had upgraded today to a Moderate Risk mainly for a Derechio and a 10% Hatched Tornado Risk further North and West through Central and North East South Dakota. Similar to the day before the Models were showing an Arc of Supercells moding into a east moving Derechio and another Line of Supercells further west nearer the NE Moving Surface Low. Again it was a Warm Front play and crucially today we needed the Derechio to be further south east and delayed to actually not let it cut off the warm easterly inflow into our discrete storms.My target today was between Huron and Aberdeen and Storms had already fired in Central Southern Nebraska racing North. We really needed something to fire early to the North West of these storms and stay discrete. A few storms did fire and remained discrete but the derechio was rapidly catching up it was a race against time. We followed a Supercell to just south of Aberdeen which looked the part for a bit but just could not get the job done, it really was a grungy mess and I dont even think I took a picture. We were now hearing of power outages across most of Eastern South Dakota and haunting images of Dust Storms and 105mph winds smashing most towns up with trees down and power lines across the road. We even had to get checked into our hotel by torchlight as the hotel had no power in Brookings. Once again a very underwhelming day and what was on the table really did not play out how the models had predicted.Some images below