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  • MESO: Mesoscale Discussion 1221

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thursday, August 02, 2018 21:34:15
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    ACUS11 KWNS 022134
    SWOMCD
    SPC MCD 022133
    MAZ000-NHZ000-022330-

    Mesoscale Discussion 1221
    NWS Storm Prediction Center Norman OK
    0433 PM CDT Thu Aug 02 2018

    Areas affected...Central and northeast MA

    Concerning...Severe potential...Watch unlikely

    Valid 022133Z - 022330Z

    Probability of Watch Issuance...5 percent

    SUMMARY...Isolated strong/damaging wind gusts remain a threat across
    central into northeast Massachusetts and extreme southeast New
    Hampshire this evening (until 8 PM EDT), as storms track across this
    region.

    DISCUSSION...At 2130Z, mosaic radar imagery showed a band of storms
    extending from south-central MA into central CT, tracking to the
    northeast at 25 kt. These storms were located in vicinity of a cold
    front which extended from ME through central MA to western CT into
    NJ and southeast PA. The warm sector across central and eastern MA
    is moderately unstable with effective bulk shear of 40-50 kt
    oriented parallel to the front. This should maintain the linear
    structure, while steep surface to 3 km lapse rates and DCAPE
    exceeding 1000 J/kg enhance the potential for locally strong wind
    gusts. Given the spatial limitations of this severe threat, a
    severe thunderstorm watch is not warranted as storms will spread
    across central into northeast MA and extreme southeast NH.

    ..Peters/Hart.. 08/02/2018

    ...Please see www.spc.noaa.gov for graphic product...

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

    LAT...LON 42067206 42637174 42897084 42677065 42277099 42067191
    42067206



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