• MESO: Mesoscale Discussion 1325

    From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 29 02:39:57 2023
    ACUS11 KWNS 290239
    SWOMCD
    SPC MCD 290239=20
    COZ000-290345-

    Mesoscale Discussion 1325
    NWS Storm Prediction Center Norman OK
    0939 PM CDT Wed Jun 28 2023

    Areas affected...northeast CO and the Front Range

    Concerning...Severe potential...Watch possible=20

    Valid 290239Z - 290345Z

    Probability of Watch Issuance...60 percent

    SUMMARY...New convective development this evening may continue to
    strengthen and pose an increasing risk for hail and damaging winds.
    Conditions are being monitored for a possible weather watch.

    DISCUSSION...As of 0235 UTC, evening IR satellite imagery showed
    developing thunderstorms along the CO Front Range into portions of
    northeast CO. Persistent upslope flow with dewpoints holding in the
    50s F is supporting moderate destabilization. While thus far
    inhibition has surprised convective development, subtle forcing from
    a passing 300 mb speed max and an increasing nocturnal low-level jet
    may be sufficient for storm development/intensification this
    evening. 40+ kt of bulk shear from the FTG VAD will favor a
    supercell storm mode with any storms able to become established.
    Steep mid-level lapse rates and favorable buoyancy would support a
    risk for hail and isolated damaging winds. Recent HRRR runs do show
    storm development/maintains is possible into the overnight hours
    lending credibility to the increasing severe risk. Conditions are
    being monitored for a possible weather watch.

    ..Lyons/Hart.. 06/29/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!-MaeP083A8WVj8eJInhnox-tC6RPctjlBhaYHxFEcpFzMQYOo2AmDvPZbZ65keLuQI8qABjNh= 0defeAb4qaEannDauw$ for graphic product...

    ATTN...WFO...GLD...BOU...

    LAT...LON 39660215 39450232 39390275 39480405 39770444 40050461
    40190471 40340468 40550450 40900376 40950312 40790235
    40430207 39900215 39660215=20


    =3D =3D =3D
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  • From COD Weather Processor@1:2320/105 to wx-storm@lists.illinois.edu on Thu Jun 29 02:47:04 2023
    ACUS11 KWNS 290246
    SWOMCD
    SPC MCD 290246 COR
    COZ000-290345-

    Mesoscale Discussion 1325
    NWS Storm Prediction Center Norman OK
    0946 PM CDT Wed Jun 28 2023

    Areas affected...northeast CO and the Front Range

    Concerning...Severe potential...Watch possible=20

    Valid 290246Z - 290345Z

    CORRECTED FOR TYPOS

    Probability of Watch Issuance...60 percent

    SUMMARY...New convective development this evening may continue to
    strengthen and pose an increasing risk for hail and damaging winds.
    Conditions are being monitored for a possible weather watch.

    DISCUSSION...As of 0235 UTC, evening IR satellite imagery showed
    developing thunderstorms along the CO Front Range into portions of
    northeast CO. Persistent upslope flow with dewpoints holding in the
    50s F is supporting moderate destabilization. While thus far
    inhibition has suppressed convective development, subtle forcing
    from a passing 300 mb speed max and an increasing nocturnal
    low-level jet may be sufficient for storm
    development/intensification this evening. 40+ kt of bulk shear from
    the FTG VAD will favor a supercell storm mode with any storms able
    to become established. Steep mid-level lapse rates and favorable
    buoyancy would support a risk for hail and isolated damaging winds.
    Recent HRRR runs do show storm development/maintenance is possible
    into the overnight hours lending credibility to the increasing
    severe risk. Conditions are being monitored for a possible weather
    watch.

    ..Lyons/Hart.. 06/29/2023

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fj= g!4BgNY9BoAELHp0A63zzexlofr6wGh3XRgX1f1Zwae_gMYolfObCZ7pzXNXleqm5jNjfi7sBOk= rwpjbNi-XHs4bxrqzI$ for graphic product...

    ATTN...WFO...GLD...BOU...

    LAT...LON 39660215 39450232 39390275 39480405 39770444 40050461
    40190471 40340468 40550450 40900376 40950312 40790235
    40430207 39900215 39660215=20


    =3D =3D =3D
    To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM.

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