• MESO: Mesoscale Discussion 1706

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Tue Jul 25 21:58:23 2023
    ACUS11 KWNS 252158
    SWOMCD
    SPC MCD 252157=20
    MNZ000-NDZ000-252330-

    Mesoscale Discussion 1706
    NWS Storm Prediction Center Norman OK
    0457 PM CDT Tue Jul 25 2023

    Areas affected...portions of eastern North Dakota into far western
    Minnesota

    Concerning...Severe potential...Watch possible=20

    Valid 252157Z - 252330Z

    Probability of Watch Issuance...60 percent

    SUMMARY...The severe threat is increasing across portions of North
    Dakota into northwestern Minnesota. Severe hail and wind are the
    main threats. Convective coverage trends are being monitored for the
    need of a Severe Thunderstorm Watch.

    DISCUSSION...MRMS mosaic radar imagery depicts an increase in
    convective intensity across ND as a subtle mid-level trough
    overspreads the region, with at least one supercell taking shape in
    Cavalier County, ND. Though appreciable convective inhibition
    remains in place, strong surface heating of a moist low-level
    airmass (characterized by near 70 F surface dewpoints) supports
    3000-5000 J/kg MLCAPE (per 21Z mesoanalysis). At the moment, it is
    unclear if the upper support across the northern Plains will
    compensate for the substantial CINH to support a relatively
    widespread severe threat. On the other hand, given the instability,
    any storm that can mature and become sustained should support a
    severe wind and hail threat. As such, convective trends will
    continue to be monitored for the need of a Severe Thunderstorm
    Watch.

    ..Squitieri/Thompson.. 07/25/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!_aOGGblaP-_YxqOTgLR5uQn8IFyC44vaRfLB3q21aMk_TxKzNsofXCXPMbpvnmjsrP8Kdxsi1= 86IMgKGf0JRmv0DAbM$ for graphic product...

    ATTN...WFO...FGF...BIS...

    LAT...LON 45989853 48399840 48999806 49119739 48909647 48519616
    47829605 47139604 46549596 46269604 46129634 45949714
    45989853=20


    =3D =3D =3D
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