• Flood Threat South Texas

    From Mike Powell@618:250/10 to All on Sun Oct 4 15:37:28 2026
    AWUS01 KWNH 041416
    FFGMPD
    TXZ000-042014-

    Mesoscale Precipitation Discussion 1441
    NWS Weather Prediction Center College Park MD
    1015 AM EDT Sun Oct 04 2026

    Areas affected...South Texas

    Concerning...Heavy rainfall...Flash flooding possible

    Valid 041414Z - 042014Z

    Summary...Repeating showers and thunderstorms across South Texas
    may lead to localized flash flooding through this afternoon.

    Discussion...The latest analysis across the region shows a
    stationary boundary draped right along the Texas coast. This
    feature, combined with the very tropical airmass, is the main
    driving factor for repeating showers and thunderstorms across
    South Texas this morning.

    The tropical airmass is characterized by precipitable water values
    over 2 inches, locally over 2.5" (CFP 12Z sounding was 2.62").
    Very deep warm cloud depths and the skinny CAPE profiles are all
    indicative of a very efficient warm rain processes. A steady flux
    of moisture transport into the area will keep the threat of
    showers and thunderstorms through the afternoon hours.

    Latest hi-res guidance showers scattered to numerous showers and
    thunderstorms through at least 18Z followed by more scattered
    activity between 18Z and 00Z. Rainfall amounts of 1 to 3 inches,
    locally higher up to 4 to 5 inches, will be possible in the
    outlook area over the next 6 hours.

    The main risk of flash flooding will be for any urban location and
    poor drainage areas.

    Taylor

    ATTN...WFO...BRO...

    ATTN...RFC...FWR...NWC...

    LAT...LON 27229766 27189725 27139728 26559725 26349702
    25949710 25599721 25949771 26319769 26959772


    $$

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