• Flood Risk AR Heavy Rainfall

    From Mike Powell@618:250/10 to All on Mon Aug 24 09:40:42 2026
    AWUS01 KWNH 241101
    FFGMPD
    MSZ000-ARZ000-241700-

    Mesoscale Precipitation Discussion 1120
    NWS Weather Prediction Center College Park MD
    700 AM EDT Mon Aug 24 2026

    Areas affected...Arkansas

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

    Valid 241059Z - 241700Z

    Summary...Flash flooding is possible this morning across portions
    of central Arkansas as repeating showers and thunderstorms move
    through. Rainfall totals of 2 to 3 inches in a short duration may
    cause isolated instances of flash flooding.

    Discussion...Showers and thunderstorms this morning continue to
    blossom over portions of Arkansas, moving from the northwest to
    southeast on the periphery of the upper ridge that is centered
    over central Texas. This activity is being fueled by the lingering
    nocturnal low level jet and is positioned within an axis of
    relatively higher moisture, characterized by PWs around 1.5-1.75 inches.

    Over the next several hours, this activity should progress
    southeast. However, upstream additional convection is forming and
    will likely track over the similar area. The most recent runs of
    the HRRR and other hi-res guidance is in reasonable agreement with
    the placement of the heaviest rainfall axis positioned in a stripe
    from northern to southeast Arkansas, indicating 1-2 inches likely
    with some embedded cores of 2-3 inches through about 17Z today.
    Rainfall rates with the strongest cores could approach 2"/hr.

    Despite the drier soils, the intense rain rates combined with the repeating/training nature of the activity suggests at least a
    lower end threat of flash flooding for the more vulnerable
    locations. After about 17Z, convection should begin to wane and
    also move out of the area.

    Taylor

    ATTN...WFO...JAN...LZK...MEG...TSA...

    ATTN...RFC...ORN...TUA...NWC...

    LAT...LON 36489251 36149183 35769151 35079109 34669082
    34039059 33529063 33269125 34159242 34959289
    35529317 36229341

    $$
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    * Origin: capitolcityonline.net * KY, USA (618:250/10)