• MESO: Mesoscale Discussion 1333

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Fri Jul 23 21:48:05 2021
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    ACUS11 KWNS 232148
    SWOMCD
    SPC MCD 232147=20
    MEZ000-MAZ000-NHZ000-RIZ000-VTZ000-CTZ000-232245-

    Mesoscale Discussion 1333
    NWS Storm Prediction Center Norman OK
    0447 PM CDT Fri Jul 23 2021

    Areas affected...portions of New England.

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

    Valid 232147Z - 232245Z

    Probability of Watch Issuance...20 percent

    SUMMARY...Scattered strong to isolated severe storms are forecast to
    persist for a few hours.

    DISCUSSION...Despite weak shear, several severe storms have occurred
    across the Northeast over the past few hours with reports of
    damaging wind and severe hail. The instability fueling this activity
    is entirely diurnally driven and thus the threat should start to
    wane pretty quickly this evening. However, in the meantime, MLCAPE
    around 500 J/kg and cool air aloft will continue to support a threat
    for a few strong to isolated severe storms. This is supported by the
    20Z HRRR which shows storms mostly weakened by 00Z.

    ..Bentley/Edwards.. 07/23/2021

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!pgVWzgrJ-8SMUWQyXKLcFF5sUVmAEKVjiez6Uq69twCj2ykXPpmPXoFOOBwj-0sfmkl2zbeM$=
    for graphic product...

    ATTN...WFO...GYX...BOX...BTV...

    LAT...LON 44627151 44216988 43876953 43716959 43587001 43337033
    42997058 42727069 42167057 41637048 41367092 41467130
    41807206 42987210 43997220 44697197 44627151=20



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