Between the late afternoon of Thursday the 30th and the early morning of Friday July 1st, numerous showers and mainly weak thunderstorms occurred within this six-county North Central Kansas area. Mainly between 6-7 p.m. CDT, a small line of storms briefly became strong to marginally-severe over northern portions of Smith and Jewell counties, with a mesonet station eight miles north of Bellaire measuring a gust of 58 MPH. Heavy rain also affected a small portion of the area. Aided by an increased southwesterly low-level jet during the evening, a very narrow west-east oriented band of moderate to heavy rain set up directly along the Kansas-Nebraska state line, with the brunt of accumulation occurring prior to midnight CDT. Although there were no known gauge readings within the North Central Kansas portion of this heavy rain stripe, radar estimation and a few measurements just over the state line in Superior NE strongly suggest that at least 2-3 inches fell across the extreme northern fringes of Jewell County.
Upper level flow across the Central Plains was westerly, as the region resided on the southern side of a larger scale low pressure system working its way east across Canada. An accompanying area of low pressure at the surface deepened as it shifted east into Ontario during the daytime hours, with a southward trailing cold front sliding through the Northern and Central Plains. By late afternoon, this cold front was draped from eastern NE into west-central KS, working into and stalling over North Central Kansas. Though better overall upper level lift was north of the region, thunderstorms were able to fire along this boundary locally. Mixed-layer CAPE peaked between 1000-2000 J/kg, but deep layer shear was on the lower side, around 30 knots.