• MESO: Mesoscale Discussion 0889

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Monday, May 23, 2022 23:02:28
    ACUS11 KWNS 232302
    SWOMCD
    SPC MCD 232302=20
    NCZ000-SCZ000-240100-

    Mesoscale Discussion 0889
    NWS Storm Prediction Center Norman OK
    0602 PM CDT Mon May 23 2022

    Areas affected...Coastal South Carolina

    Concerning...Severe Thunderstorm Watch 263...

    Valid 232302Z - 240100Z

    The severe weather threat for Severe Thunderstorm Watch 263
    continues.

    SUMMARY...Sporadic damaging winds remain possible as a line of
    storms approaches the South Carolina coast, though the overall
    severe threat will likely continue to decrease through the evening
    hours.

    DISCUSSION...Latest GOES IR imagery and lightning data have shown an
    overall weakening trend in the convective line that has been
    traversing eastern GA and southern SC. In line with this trend has
    been a propensity for 30-50 mph observed wind gusts and fewer wind
    damage reports over the past hour. Recent RAP mesoanalyses hint at
    increasing surface-based inhibition and weakening low-level lapse
    rates as temperatures begin to cool ahead of the line. This trend
    will persist through the remainder of the evening hours as diurnal
    cooling continues. However, the northern segment of the line (in the
    vicinity of Orangeburg, SC) has shown resistance to diurnal cooling
    effects, likely due to compensating influences of stronger
    line-orthogonal low-level and deep-layer shear. This segment of the
    line will continue to pose a risk for sporadic damaging winds
    through the remainder of the evening hours as it approaches the SC
    coast.

    ..Moore.. 05/23/2022

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!8bDk1GhlD4FuWGRKohrXOzOax1IMBZXLnVvxu9TrAZDzi_1OrW8xibUxqtzoztZFUzGoNpY-G= k_BHUMr9M7xfM__L9Y$ for graphic product...

    ATTN...WFO...ILM...CHS...CAE...

    LAT...LON 32617984 32458029 32508081 32588104 32718120 33048121
    33628097 33848052 34128003 34197940 34177895 34007864
    33747856 33217903 32907936 32617984=20


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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Sunday, May 28, 2023 01:47:33
    ACUS11 KWNS 280147
    SWOMCD
    SPC MCD 280147=20
    TXZ000-NMZ000-280345-

    Mesoscale Discussion 0889
    NWS Storm Prediction Center Norman OK
    0847 PM CDT Sat May 27 2023

    Areas affected...Southern High Plains

    Concerning...Severe Thunderstorm Watch 244...247...

    Valid 280147Z - 280345Z

    The severe weather threat for Severe Thunderstorm Watch 244, 247
    continues.

    SUMMARY...Isolated severe thunderstorms will continue across the
    High Plains of east-central NM and the TX South Plains for the next
    few hours. Large hail remains the primary risk.

    DISCUSSION...Several small clusters of strong/severe thunderstorms
    continue across east-central NM into the TX South Plains early this
    evening. LLJ has gradually increased across west TX ahead of this
    activity which should aid southeast propagation along the
    instability axis. Greatest buoyancy extends along an augmented
    surface boundary from earlier convection which is currently draped
    from near Big Spring into east-central NM. MRMS MESH data suggests a
    few of the stronger updrafts continue to produce hail around 1 inch
    at times. Hail should be the primary concern for the next few hours.

    ..Darrow.. 05/28/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4NOxKqRyIZtY5SnJPBNGBTNgBf6BmuYyV6px-qzoIGFZ5OjItrVnbtbNd4LNE-0_Jv3ku2v0E= abspl6Q8hKy-UVfjBc$ for graphic product...

    ATTN...WFO...LUB...AMA...MAF...ABQ...

    LAT...LON 33030288 33910370 34740452 35040337 34150194 33100166
    33030288=20


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