GFS, NAM, and HPC guidence in line for QPF of at least .2". This would be sufficient for a similar event to last night for Tuesday Night, with around a half inch of snow and a tenth inch of icing. The timing has shifted a little later, continuing precipitation past 6am Wednesday. For this, confidence is growing for a delay on Wednesday.
The event Thursday into Friday, confidence still high for signficant snow accumulation in SNE. QPF still over .75 on GFS with the past 4 runs. The Euro just dropped highest QPF to our south, with the GFS also transfering energy a bit further south but keeps max QPF over SNH. HPC has dropped max QPF to our south as well. Max QPF still over an inch which is promising for snowfall around a foot somewhere in SNE. However, the transition south is not good at all in terms of snowfall here, with a consensus of .75" in Keene, and with 12:1 ratios likely, probably closer to 8 inches. A flip back to a trend north is not out of the question considering the event is still 3 days away. As for timing, model trends have been a bit slower but still progressive with the storm, resulting in an onset of precipitation closer to Thursday Evening but continuing a quick progression out of the region. Right now, expecting a big dump of snow between 7pm Thursday and 7am Friday. Speaking in terms of snowday potential, at this point none for Thursday - but looking good for Friday.
In the long term, the Euro has been consistent in the 12z run today with a monster snow event in New England on Sunday. Taken verbatim, both the 00z and 12z runs give a 20 to 30 inch snowfall. The GFS has trended a little closer to the coast today, so definitely needs monitoring over the next few days.
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