300 MB 12/02/00 0000UTC through 12/03/00 0000 UTC

December 2, 2000 0000 UTC 300 MbDecember 2, 2000 1200 UTC 300 MbDecember 3, 2000 0000 UTC 300 Mb

  • "Positively tilted" upper trough around the Great Lakes sinks south and southeast
  • Development of upper jet streak in satellite imagery confirmed by upper plots in TN Valley at 12/03/00 0000 UTC
  • Upper impulse exiting New England as upper ridge builds into southeastern Canada
  • Strong west to east upper flow



  • 500 Mb 12/02/00 0000UTC through 12/03/00 0000 UTC

    December 2, 2000 0000 UTC 500 MbDecember 2, 2000 1200 UTC 500 MbDecember 3, 2000 0000 UTC 500 Mb

  • Upper low develops within a "positively tilted" upper trough as it tracks south and east into the TN Valley
  • Upper impulse exiting New England as upper ridge builds into southeastern Canada
  • Strong west to east upper flow



  • 850 Mb 12/02/00 0000UTC through 12/03/00 0000 UTC

    December 2, 2000 0000 UTC 850 MbDecember 2, 2000 1200 UTC 850 MbDecember 3, 2000 0000 UTC 850 Mb

  • Very little positive thermal or moisture advection until 0000 UTC 12/03
  • Developing 850 Mb system along the coastal Carolinas by 0000 UTC 12/03
  • Light south to southwest flow opposing north flow, along with a tightening thermal gradient suggests increasing 850 Mb frontogenesis in Virginia and North Carolina, but most of the forcing is from the north

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