AWUS01 KWNH 210835 FFGMPD MOZ000-OKZ000-KSZ000-211345- Mesoscale Precipitation Discussion 0488 NWS Weather Prediction Center College Park MD 434 AM EDT Sun Jun 21 2026 Areas affected...west-central to eastern KS, western MO and northeastern OK Concerning...Heavy rainfall...Flash flooding likely Valid 210832Z - 211345Z SUMMARY...Flash flooding will be likely across portions of central and eastern KS and possibly into western MO and northeastern OK through 14Z. Training of heavy rain is expected to coincide with peak hourly rainfall of roughly 2 to 3 inches (locally higher) and additional totals of 3 to 5+ inches on an isolated basis. DISCUSSION...An expansive MCS continued to evolve over central KS as of 08Z with an MCV identified about 50 miles NNE of ICT and a preceding bowing line segment. A trailing band of thunderstorms extended in a SE to NW arc from the southern most portion of the leading bow, from between Hutchinson and Pratt to I-70 near Oakley. Over the past 1-2 hours, there has been some cloud top warming/weakening associated with the leading bowing segment advancing ESE over southern KS between Wichita and Chanute but plenty of instability remained along and south of the MCS track. SPC mesoanalysis data showed an instability gradient from central KS to the eastern MO/AR border, associated with a quasi-stationary front that extended east to west across central KS, with 1000 to 2000+ J/kg of MLCAPE over southern KS, northern OK into southern MO/northern AR. The MCV will continue to track east over the next 6 hours with possible continued weakening of the leading linear segment. However, upstream thunderstorms over south-central KS have strengthened over the past hour with additional thunderstorms over west-central KS, advancing southeastward. Repeating rounds and training of heavy rain are expected to result in areas of flash flooding over portions of central to southeastern KS where peak hourly rainfall of 2 to 3 inches is expected. Total rainfall of 3 to 5 inches (locally higher) will be possible on an isolated basis with areas of flash flooding likely. Otto ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...DDC...EAX...GLD...ICT...LSX...OUN...SGF...TOP... TSA... ATTN...RFC...KRF...TUA...NWC... LAT...LON 39769392 39569345 39409315 39139288 38819269 38449266 38049283 37549309 37099382 36679577 36699738 37209916 37880008 38540035 39039986 38859892 38709757 38919634 39159564 39679476