


Flash Flood Guidance
Issued by NWS
Issued by NWS
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081 AWUS01 KWNH 061102 FFGMPD TXZ000-061630- Mesoscale Precipitation Discussion 0601 NWS Weather Prediction Center College Park MD 701 AM EDT Sun Jul 06 2025 Areas affected...central to north-central TX Concerning...Heavy rainfall...Flash flooding likely Valid 061100Z - 061630Z SUMMARY...A likely but localized flash flood threat will focus across portions of central to north-central TX through 16Z. Hourly rainfall of 1 to 3+ in/hr and spotty 3 to 6 inch rainfall totals are expected. Overlap of additional heavy rain areas with sensitive/saturated soils due to recent heavy rainfall will increase potential for renewed flash flooding. DISCUSSION...Regional radar imagery through 1030Z showed that showers and thunderstorms continued to expand to the southwest of Fort Worth and into portions of the Edwards Plateau. MRMS-derived rain rates were locally over 2 in/hr between Granbury and Meridan and were increasing toward 2 in/hr over Mason County. A north-south elongated 700 mb low/trough was located between Fort Worth and Abilene, co-located with PW values between 2.0 and 2.2 inches per 10Z SPC mesoanalysis data. SPC mesoanalysis data also showed the area of storms southwest of Fort Worth was along a north-south oriented instability gradient, with little to no CAPE over the eastern third of TX with 1000-2000 J/kg to the west. Meanwhile, 925-850 mb winds were parallel to I-35 between San Antonio and Dallas-Fort Worth, while these winds were veered to the west across the Edwards Plateau and Rolling Plains regions, allowing for confluent flow to the west of I-35. Weak deeper layer steering flow and the relatively stronger low level inflow layer will set the stage for potential training and back-building of cells. Given the environment in place, potential for slow moving cores of heavy rain, peak hourly rainfall of 2 to 3+ inches will be possible along with higher end totals in the 3 to 6 inch range over the next 6 hours. Overlap of these higher rainfall totals with portions of central TX that received heavy rainfall over the past 72 hours will increase the threat of flash flooding. However, these higher end totals should be fairly low in coverage. So therefore, while flash flooding is considered likely over the next several hours, coverage is expected to remain rather isolated. Otto ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...EWX...FWD...SJT... ATTN...RFC...FWR...NWC... LAT...LON 33169754 32579723 31499731 30399791 29749868 29699954 30189988 30909965 31829927 32519877 33169824