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canderson

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Posts posted by canderson

  1. CTP's 11 am discussion is very detailed and a good read. 

    Quote

    A closed mid-level low pivoting across the Gulf Coast early
    Sunday morning will begin to lift northeast and take on a
    negative tilt across the southern Appalachians Sunday afternoon
    and then race northeast to be over NJ by 12Z Monday. This will
    be accompanied by an increasingly coupled jet structure
    downstream of the pivoting trough, with intense ascent through
    diffluence aiding in the development and then strengthening of a
    low pressure system moving north to a nearly stacked position by
    the end of D3. The guidance has come into much better
    agreement with the placement of this low lifting roughly along
    the I-95 corridor. As this low initially develops, mid-level
    confluence over the Mid-Atlantic will help reinforce a wedge of
    high pressure down the east side of the Appalachians in a
    typical Cold Air Damming (CAD) setup.

    As the low strengthens, moisture will surge northwestward
    behind robust isentropic lift and likely produce a period of
    moderate to heavy snow (WAA thump) early Sunday night (00-06Z
    Mon). Mixed thermal profiles and possible dry slot are in play
    into early Monday morning to the southeast of I-99/80 which
    could transition snow to ice over the southeast part of the CWA.
    While there are still some details to resolve, there is a
    strong enough model signal to issue a well-collaborated winter
    storm watch for most of the CWA from 18Z Sunday to 18Z Monday.
    The multi-model/blended QPF and SLRs indicate potential for 6"
    or more of snow with a minor ice glaze also possible across the
    southeast 1/3 of the area.

    Deformation snow appears to linger over the northern part of CPA
    through Monday morning. The expected snowfall btwn 12-18Z
    Monday was not included in the storm total with this cycle
    given that it is beyond the set time window. Expect cold/gusty
    NW flow to take over Monday night with deformation snow
    transition to lake effect/upslope snow showers into Tuesday
    morning.

    Post-storm will likely feature a period of gusty northwest
    winds and lake effect snow showers as cool temperatures remain
    in place.

     

    • Thanks 1
  2. 6 minutes ago, losetoa6 said:

    I do think the winds and severity  are being underestimated . Haven't heard much talk from mets .

    Beating the dead horse hit winds will be the bigger issue here than snow. 6-10l isn’t a massive deal - sustained winds at 40 for 2 days and countless gusts maybe to 70 over that span is a nightmare. 

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