• Heavy Rain/Flood NM/TX/OK

    From Dumas Walker@21:1/175 to All on Mon Jul 8 08:37:00 2024
    AWUS01 KWNH 080927
    FFGMPD
    TXZ000-OKZ000-NMZ000-081525-

    Mesoscale Precipitation Discussion 0591
    NWS Weather Prediction Center College Park MD
    526 AM EDT Mon Jul 08 2024

    Areas affected...Northeast to East-Central NM...TX Panhandle into
    Northwest TX...Southwest OK

    Concerning...Heavy rainfall...Flash flooding likely

    Valid 080925Z - 081525Z

    SUMMARY...Locally redeveloping and persistent areas of heavy
    showers and thunderstorms this morning will likely favor concerns
    for instances of flash flooding.

    DISCUSSION...The GOES-E IR satellite imagery is showing some rapid
    cloud-top cooling across areas of northeast to east-central NM in
    association with slow-moving areas of heavy showers and
    thunderstorms. Additional areas of convection are also seen
    developing over parts of the TX Panhanlde.

    This convection is largely being driven by the persistence of a
    moderately buoyant airmass characterized by MUCAPE values of 1000
    to 1500 J/kg, and with aid of steep mid-level lapse rates.
    Furthermore the convection is in close proximity to a surface
    front that has been settling gradually southward overnight.
    Shortwave energy/forcing aloft digging down across the region and
    also an axis of favorable low-level moisture convergence are
    further supporting the convective activity and its localized
    expansion.

    Some of the convection has been tending to take on some linear
    modes with training concerns while other areas of convection are
    characterized by slow cell-motions and concerns for cell-mergers.
    The MRMS data and dual-pol radar suggest there may be a fair
    amount of hail in some of these storms, but the environment is
    conducive for rainfall rates to still reach as high as 1.5
    inches/hour.

    Given some of the slow cell-motions and training considerations,
    some rainfall totals may reach 3 to 4+ inches going through the
    early morning hours as this activity generally moves off to the
    east-southeast. Impacted areas should continue to be portions of
    northeast to east-central NM, the TX Panhandle, far northwest TX,
    and possibly some portions of southwest OK in time. Isolated to
    widely scattered instances of flash flooding are likely over the
    next several hours.

    Orrison

    ATTN...WFO...ABQ...AMA...LUB...OUN...

    ATTN...RFC...ABRFC...WGRFC...NWC...

    LAT...LON 36400410 35810196 35550023 35459810 34619766
    33999821 33659951 33590164 33970350 34780471
    35410518 36120502
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