


Flash Flood Guidance
Issued by NWS
Issued by NWS
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233 AWUS01 KWNH 290802 FFGMPD MOZ000-ARZ000-KSZ000-291400- Mesoscale Precipitation Discussion 0547 NWS Weather Prediction Center College Park MD 401 AM EDT Sun Jun 29 2025 Areas affected...eastern Kansas into central and south-central Missouri Concerning...Heavy rainfall...Flash flooding possible Valid 290800Z - 291400Z Summary...A few areas of slow-moving showers and thunderstorms are expected to expand in coverage across the discussion area. Areas of 1-2 inch/hr rain rates are expected through at least 14Z/9a CDT this morning, which could prompt flash flooding. Discussion...Scattered convection was developing along an axis from east-central Kansas (near Emporia eastward to near Sedalia and southeastward to the MO/AR border near Cherokee Village. The storms were being forced by ascent on the nose of stronger 850mb flow located across Kansas and the Missouri Ozarks, with speed convergence providing lift amid a marginally unstable (1000 J/kg MUCAPE) but plenty moist (1.5+ inch PW) environment. The storms are developing amid weak steering flow aloft, resulting in slow movement and redevelopment within the axis of best low-level convergence. The slow movement was already enabling spots of 1 inch/hr rain rates to materialize in central Missouri, which may result in isolated excessive runoff in the near term despite values falling short of hourly FFG. Models/observations suggest that persistent low-level convergence across the discussion area will continue to promote redevelopment and expansion of convection through the early morning hours. An attendant increase in rainfall rates (into the 1.5 inch/hr range in spots) is also expected. These rain rates will threaten FFG thresholds and promote a risk of flash flooding especially in urban and sensitive locales through 14Z/9a CDT this morning. Cook ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...EAX...LSX...LZK...PAH...SGF...TOP... ATTN...RFC...KRF...MSR...ORN...NWC... LAT...LON 39749527 39699367 38599109 37209056 36509081 36309167 36869256 38309426 38429556 39089600