• MESO: Mesoscale Discussion 1455

    From COD Weather Processor@1:2320/127 to wx-storm@lists.illinois.edu on Fri Jul 3 00:14:04 2026
    ACUS11 KWNS 030014
    SWOMCD
    SPC MCD 030013=20
    MEZ000-NHZ000-VTZ000-NYZ000-030215-

    Mesoscale Discussion 1455
    NWS Storm Prediction Center Norman OK
    0713 PM CDT Thu Jul 02 2026

    Areas affected...Far northeast New York into northern Vermont...New Hampshire...and western Maine

    Concerning...Severe potential...Watch unlikely=20

    Valid 030013Z - 030215Z

    Probability of Watch Issuance...20 percent

    SUMMARY...A band of thunderstorms cross the international border may
    pose a damaging wind threat in the coming hours across portions of
    the Northeast. Watch issuance is not likely, however.

    DISCUSSION...Latest MRMS mosaics show a broken band of storms
    migrating eastward across southern Quebec and beginning to
    cross/approach the international border. Velocity data from CASBV
    shows some pockets of stronger winds, but an outflow boundary is
    also noted emanating from the southwestern flank of the band. This
    suggests that while some swaths of strong/damaging winds are
    possible in the near term, the near-storm environment is not
    favorable for additional development. Furthermore, GOES IR imagery
    has shown some degree of cloud-top warming over the past hour,
    suggesting a slight weakening trend. Nonetheless, recent RAP
    mesoanalysis depicts 30-40 knots of effective shear and around 1500
    J/kg MLCAPE across the region that may support these bands for the
    next couple of hours. Based on the aforementioned velocity
    observations, some threat for damaging winds will likely accompany
    these storms. With time, nocturnal cooling will promote increasing
    inhibition and will act as a modulating factor for thunderstorm
    intensity, which should limit the overall severe risk and negate the
    need for a watch.

    ..Moore/Guyer.. 07/03/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4uwywk_CUfkf_JHq6hlVEh9XmTgHWyllZerayHlTLIxBPLGqNGpRidDHl4A68dBN9FyuD2aCo= -cCAP_0kMXPWpoNoaQ$ for graphic product...

    ATTN...WFO...CAR...GYX...BTV...

    LAT...LON 44467370 44777398 45027405 45047272 45027166 45557086
    45777040 45666970 45356941 44916965 44467007 44167089
    44087158 44077235 44197313 44467370=20

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN


    =3D =3D =3D
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    * Origin: Capitol City Weather Station (1:2320/127)