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Yaz

Professional Forecaster
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Everything posted by Yaz

  1. Generally speaking, one major player increasing the snow to liquid ratio is to see high relative humidity (>80%) in the dendritic growth zone, which is the height range where temperatures are typically between -10C to -20C, combined with good lift (omega). However, the ratio can influenced by other factors (e.g. high surface wind can readily break apart the dendrites creating less more dense(more compact) surface accumulation).
  2. Yup…. just did not expect the primary to travel that far north.
  3. can report a similar story in Rockaway- NJ.. the attached radar loop shows what almost looks like a thumb of echoes moving Northwest within the overall echoes (Norlan trof?) …this is on a 0.5 degree tilt 122725 3 am.mov
  4. GFS 18z predicted warm nose never materialized ….0z initialization at two locations: so freezing rain never materialized
  5. The GFS warm nose around 800 mb yielding the freezing rain….. let’s see if it will be correct or not for tonight.
  6. Interesting. Thanks. 1. How strong is the correlation between MJO phase and temperature? 2. And how good are the projections of MJO progression. Back when I studied these types of things, the material was often a bit short in length and lacking a lot of detail. -Greg
  7. Let me know if anybody wants to learn how to use BUFKIT. It is a free software program that interprets American model output (i.e. GFS, NAM, et al) that is also freely available.
  8. Below map shows Max snow growth region between purple lines where RH > 70% (temps between -12C and -18C).....which leads me to believe that snow rate should pickup around 7:00 pm in Morristown, assuming NAM is correct.(?)
  9. BufKIT for MMU 0z NAM (hourly from right to left...with blue as SNOW..total is 5.2"....snow ratio is the thin light blue line....2 meter temp (thin red line) and DP (thin green line); when green becomes bright green is when RH exceeds 90%.
  10. Rockaway NJ 2:50 am Morris County
  11. The Dendrite growth should be very favorable but an above-freezing surface can spoil the ratio.
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