:: Late Sept Storms - Fri AM Update
Model progs have held up overnight, and shortwave has raced into Dakota and is now approaching the MN border as expected. Ahead of the front, convection is trying to work its way vertically through a moderately warm mid-layer. Visible Sat and corresponding MPX WSR echoes indicate a line that formed along the Hwy 23 route from STC-Granite Falls. CB towers will struggle in organization until the line moves further ENE into the area of weaker CIN.
I would expect the TC Metro to be affected by this line within the next 2-3 hours, with main threat to be a brief downpour. Small hail cannot be ruled out, but non-supercell nature of the line will keep us clear of any threats like we had last night. After that line clears, the front will sweep in very distinctively somewhere around 2-4pm. Winds will shift to the northwest and high pressure will build quickly behind bringing a beautiful Saturday to Lakeville. The next non-normal weather maker enters the Pacific NW concurrently, and we will see its influence push out the high, raise temps to unseasonable levels again Sunday (80-85 degrees in the grids), and then bring another round of cathartic thunder Sunday night into Monday.