The February 28 - March 1, 2005 Snowstorm
National Weather Service Binghamton
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Index of Slides
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The February 28 - March 1, 2005 Snowstorm
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Outline
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NAM 24-hour 500 mb heights and vorticity valid 03/01 00 UTC.
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NAM 30-hour 500 mb heights and vorticity valid 03/01 06 UTC.
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GFS 30-hour 500 mb heights and vorticity valid 03/01 06 UTC.
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NAM 36-hour 500 mb heights and vorticity valid 03/01 12 UTC.
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NAM 700 mb heights and relative humidity valid 01/03 00 UTC.
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NAM 700 mb heights and relative humidity valid 03/01 06 UTC.
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GFS 700 mb heights and relative humidity valid 3/01 06 UTC.
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NAM 700 mb heights and relative humidity valid 3/1 12 UTC.
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NAM sea-level pressure valid 3/1 00 UTC.
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NAM sea-level pressure valid 3/1 06 UTC.
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GFS sea-level pressure valid 3/1 06 UTC
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NAM sea-level pressure forecast valid 3/1 12 UTC.
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NAM 24-hour QPF through 3/1 12 UTC.
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GFS 24-hour QPF valid 3/1 12 UTC.
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Summary of Basic Model Fields From the 2/28 00 UTC Runs
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NAM 700 mb frontogenesis valid 3/1 06 UTC.
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GFS 700 mb frontogenesis valid 3/1 06 UTC.
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NAM frontogenesis, omega, negative EPV and RH, valid 3/1 06 UTC.
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GFS frontogenesis, omega, negative EPV, and RH valid 3/1 06 UTC.
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NAM vertical motion and divergence valid 01/06 UTC
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GFS vertical motion and divergence valid 01/06 UTC.
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NAM and GFS 500 mb wind and divergence valid 1/06 UTC.
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NAM pressure, wind and adiabatic omega on a 300 K isentropic surface
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GFS pressure, wind and adiabatic omega on the 300 K isentropic surface
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Summary of the more detailed model diagnostics from the 28/00 UTC model runs.
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WRF 24-hour forecast sea-level pressure valid 03/01 00 UTC.
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WRF 36-hour sea-level pressure valid 03/01 12 UTC.
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WRF 24-hour reflectivity forecast valid 03/01 00 UTC.
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WRF 24-hour reflectivity valid 03/01 06 UTC.
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WRF 30-hour forecast reflectivity valid 03/01 12 UTC.
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Summary of the WRF forecast
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So what happened???
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RUC 500 mb heights and vorticity analysis at 01/06 UTC
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RUC 700 mb heights and relative humidity analysis at 01/06 UTC.
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RUC sea-level pressure analysis valid 01/06 UTC.
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RUC 700 frontogenesis analysis valid 01/06 UTC.
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RUC frontogenesis, vertical motion, EPV and RH valid 1/06 UTC.
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RUC vertical motion and divergence valid 03/01 06 UTC.
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RUC 500 mb divergence and wind analysis at 03/01 06 UTC.
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RUC pressure, wind and adiabatic omega analysis at 03/01 06 UTC
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Summary of Comparisons Between the RUC Analysis and the NAM and GFS Forecasts at 03/01 06 UTC.
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Comparisons Between the RUC, NAM and GFS at 03/01 06 UTC… continued.
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Comparisons Between the RUC, NAM and GFS at 03/01 06 UTC… continued.
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Comparisons Between the RUC, NAM and GFS at 03/01 06 UTC… continued.
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IR satellite image at 01/03 00 UTC.
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KBGM radar reflectivity at 01/02 UTC.
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KBGM radar reflectivity at 01/04 UTC.
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KBGM radar reflectivity 03/06 UTC.
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Snowfall observations through 03/01 12 UTC.
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Final conclusion regarding the all important model QPF…
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Final Summary
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