• MESO: Mesoscale Discussion 1495

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sat Jun 28 21:49:30 2025
    ACUS11 KWNS 282149
    SWOMCD
    SPC MCD 282149=20
    MNZ000-SDZ000-NDZ000-282315-

    Mesoscale Discussion 1495
    NWS Storm Prediction Center Norman OK
    0449 PM CDT Sat Jun 28 2025

    Areas affected...Southeast North Dakota...northeast South Dakota and
    western Minnesota

    Concerning...Severe potential...Watch likely=20

    Valid 282149Z - 282315Z

    Probability of Watch Issuance...80 percent

    SUMMARY...Ongoing storms in eastern North Dakota could continue to
    develop southward with the need for a watch in the short term. New
    storm development is also possible in the next couple of hours
    across northeast South Dakota into west central Minnesota, where a
    separate watch could be needed in the next 1-2 hours.

    DISCUSSION...Storms are ongoing across east central ND near and just
    ahead of a surface cold front, and downstream from subtle/embedded
    speed maxima moving generally eastward over ND. Given already
    minimal convective inhibition and a sufficiently moist environment,
    new development appears likely along the south flank of the ongoing
    storms, with an eventual storm cluster possible that will move
    toward west central MN through late evening. Observed wind profiles
    are not particularly strong in the vicinity of the developing
    storms, so a mixed mode of clusters and a few supercells appears
    more probable, with the primary threats being large hail and severe
    outflow gusts for the next few hours.

    Farther south and later this afternoon/evening, more discrete storm
    development will be possible across northeast SD in a zone of
    deepening cumulus. Wind profiles will become a little more
    favorable for supercells in this area and a more discrete storm mode
    is expected initially, so there will be some concern for a couple of
    tornadoes. A separate watch may be needed late this afternoon from
    northeast SD into west central MN.

    ..Thompson/Guyer.. 06/28/2025

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!7vC3q7CnkywftzM7PbFt86apzI-nltcfpO3rwRslW3YaOqhnUvQGOJOGusz-8N5tbX_1INEIm= oUFfN-f3T215IgiNnU$ for graphic product...

    ATTN...WFO...MPX...FGF...ABR...BIS...

    LAT...LON 46919822 47309810 47519770 47729712 47789667 47429627
    46739583 45999575 45639569 45369572 44969604 44779645
    44649724 44709765 45059796 46069787 46519798 46919822=20

    MOST PROBABLE PEAK TORNADO INTENSITY...85-115 MPH
    MOST PROBABLE PEAK WIND GUST...65-80 MPH
    MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN


    =3D =3D =3D
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