• MESO: Mesoscale Discussion 2448

    From COD Weather Processor @1:2320/107 to All on Sunday, November 08, 2026 00:38:50
    ACUS11 KWNS 080038
    SWOMCD
    SPC MCD 080037
    WAZ000-080230-

    Mesoscale Discussion 2448
    NWS Storm Prediction Center Norman OK
    0637 PM CST Sat Nov 07 2026

    Areas affected...northwestern Washington State

    Concerning...Severe potential...Watch unlikely

    Valid 080037Z - 080230Z

    Probability of Watch Issuance...5 percent

    SUMMARY...A narrow low-topped convective band will move onshore late
    this afternoon and this evening with the potential for isolated
    strong to severe wind gusts. Some isolated risk is possible, but a
    WW is unlikely.

    DISCUSSION...Evening radar imagery showed a narrow forced convective
    band was gradually more organized off the WA coast. Likely tied to
    the surface cold front, strong ascent from an upper trough and
    strong jet streak will approach the coast over the next couple of
    hours. KLGX VAD data and recent RAOB shows that wind fields are
    strengthening ahead of the line with 50-70 kt south/southwesterly
    flow prevalent in the lowest 1-3 km. Despite meager buoyancy (MUCAPE
    100-200 J/kg) and little to no lightning, the strong forcing for
    ascent and moist adiabatic/neutrally stable low-level lapse rates
    will likely be sufficient to maintain the convective band as it
    moves onshore. Convectively enhanced downdrafts may allow for some
    of this strong flow to reach the surface with strong to severe
    gusts, possibly focused in/near the higher terrain.

    More isolated convective cells may eventually develop behind the
    band and move onshore through this evening as much colder
    temperatures aloft steepen low-level lapse rates. Reinforcement of
    the weak buoyancy will develop in the steeper lapse rate
    environment, where perhaps isolated lightning flashes will be
    possible. Still, the weak buoyancy will very likely limit convective
    intensity, and a WW is unlikely.

    ..Lyons/Guyer.. 11/08/2026

    ...Please see https://urldefense.com/v3/__http://www.spc.noaa.gov__;!!DZ3fjg!-gA69f0wz549bEjptUSgDQp7jkFylriSfrr5OPFPQGgG8OxFjvvPuwaQZ_ws-w4U6XSpMtLFtb5XPF4s8JXkN3FTtMM$ for graphic product...

    ATTN...WFO...SEW...

    LAT...LON 48352479 48452468 48342403 48262342 48122275 47962268
    47712262 47522267 47362290 47132334 47092355 46982420
    47222433 47662450 47942477 48352479

    MOST PROBABLE PEAK WIND GUST...UP TO 60 MPH
    = = =
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    --- scorpsmtpd
    * Origin: capitolcityonline.net * KY, USA (1:2320/107)