384 AWUS01 KWNH 060600 FFGMPD TXZ000-OKZ000-061030- Mesoscale Precipitation Discussion 0333 NWS Weather Prediction Center College Park MD 158 AM EDT Sat Jun 06 2026 Areas affected...West-Central to Northwest Texas...Southwest to Central Oklahoma Concerning...Heavy rainfall...Flash flooding likely Valid 060558Z - 061030Z SUMMARY...An elongated axis of slow-moving, locally backbuilding, and training thunderstorms will continue to impact portions of west-central/northwest Texas and southwest/central Oklahoma. High rainfall rates reaching up to 2 inches/hour will support locally an additional 3 to 4+ inches of rain going through the early morning hours. Regional areas of flash flooding are likely to continue with locally significant impacts possible. DISCUSSION...Recent regional radar imagery and satellite data show an expansive, elongated corridor of deep convection continuing to impact west-central into northwest Texas, extending northeastward into southwest and central Oklahoma. This convection is exhibiting classic nocturnal heavy rainfall characteristics, including persistent training and discrete backbuilding cells along the upwind flank of the axis. The atmospheric profile remains primed for extreme warm-rain efficiency. Precipitable water (PW) values across the region are highly anomalous, exceeding the 90th percentile of local climatology and running greater than 2.5 standard deviations above normal. This deeply tropical moisture plume is overlapping with a moderately unstable airmass, with recent mesoanalysis indicating elevated MUCAPE values pooling between 1000 and 2000 J/kg. Forcing for continuous convective regeneration is being provided by strong, divergent upper-level flow ahead of the southern High Plains trough/closed low which is interacting with a well-defined low-level surface trough. A strengthening 30 to 35 knot low-level jet is maximizing speed and directional moisture convergence along this low-level trough axis, continuously replenishing the instability. Furthermore, the local kinematic profile features highly favorable Corfidi upwind propagation vectors. As the low-level jet veers and reinforces the inflows, the resultant upwind vectors are shrinking significantly and orienting nearly parallel to the low-level convergent axis. This setup guarantees that new cells will repeatedly regenerate on the southwestern flank of the cluster and mature over the same downstream locations, resulting in a persistent train-echo effect. Given the deep warm-cloud layers and notable thermodynamic support, rainfall rates up to 2 inches/hour will still be achievable within the core of this activity. Where training becomes anchored for multiple hours, localized additional totals of 3 to 4+ inches are likely, which will continue to support a regional threat for flash flooding and potentially significant impacts. Orrison ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...FWD...LUB...MAF...OUN...SJT... ATTN...RFC...FWR...TUA...NWC... LAT...LON 35529794 35389750 34759749 34219772 33179821 31779926 31500006 31680069 32000110 32470135 33000107 33660021 34579936 35249872