• MESO: Mesoscale Discussion 1653

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Wednesday, November 21, 2018 15:09:44
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    ACUS11 KWNS 211409
    SWOMCD
    SPC MCD 211409
    VTZ000-NYZ000-211815-

    Mesoscale Discussion 1653
    NWS Storm Prediction Center Norman OK
    0809 AM CST Wed Nov 21 2018

    Areas affected...Northern NY into northern VT

    Concerning...Heavy snow

    Valid 211409Z - 211815Z

    SUMMARY...The potential exists for snow squalls, producing reduced
    visibilities and snowfall rates approaching 1 inch per hour, to
    develop this morning across northern New York as a cold front
    advances eastward, reaching northern Vermont toward 18Z.

    DISCUSSION...A deep, cold closed low will move across southern
    Quebec today, while an accompanying cyclonic flow regime persists
    through the northeast states. Strong 100-110+ kt mid-upper low jets
    will spread into central NY this morning and central/southern VT/NH
    by early afternoon. The discussion area favorable for snow squalls
    will remain on the cyclonic shear side of the 500-mb jet, while
    linear forcing along the cold front should also support an
    environment favorable for snow squalls as this boundary advances
    east. Reduced visibilities and higher snowfall rates will tend to
    be short-lived, limiting overall snow accumulation.

    ..Peters.. 11/21/2018

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

    ATTN...WFO...BTV...ALY...BGM...BUF...

    LAT...LON 45137287 44977236 44977236 44697222 44467220 44137260
    43787321 42867451 42607559 42677675 42937709 43597638
    43927613 44347595 44867538 45127482 45367388 45137287



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