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1/23-24 Randytastic Snowstorm Part 2 STORM MODE THREAD


BxEngine

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The ECMWF was ever so slightly more generous on the northern extent of the snow.

 

HPN: 0.75" vs. 0z figure of 0.72"

NYC: 1.12" vs. 0z figure of 1.08"

POU: 0.20" vs. 0z figure of 0.15"

 

In most areas, both the 12z ECMWF and 12z GFS are in good agreement. There are some large differences in Philadelphia and Boston (>33.3% of the average of the two models).

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NAM is still drastically different than the euro... Yes the euro brings heavier precip into the city and points south, but the track over has not changed... NAM has a totally different look in terms on track

It actually cut back slightly on CT coast. Still could be off by 15 miles either direction.

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While a great hit of 8-12" for most of us, the euro is still much, much different than the NAM. So no "NAM victory dances" yet!! It does look like it is becoming increasingly likely that we don't get shafted though, which is awesome. I still like a 10-15" call.....someone in SE PA east through SNJ I think will have a second jackpot of 25" or so

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The ECMWF was ever so slightly more generous on the northern extent of the snow.

HPN: 0.75" vs. 0z figure of 0.72"

NYC: 1.12" vs. 0z figure of 1.08"

POU: 0.20" vs. 0z figure of 0.15"

In most areas, both the 12z ECMWF and 12z GFS are in good agreement. There are some large differences in Philadelphia and Boston (>33.3% of the average of the two models).

Hi Don. Do you believe that there is room for this to come a bit north even though the big e models are close now? Do the high res. And nam have any weight?

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The ECMWF was ever so slightly more generous on the northern extent of the snow.

 

HPN: 0.75" vs. 0z figure of 0.72"

NYC: 1.12" vs. 0z figure of 1.08"

POU: 0.20" vs. 0z figure of 0.15"

 

In most areas, both the 12z ECMWF and 12z GFS are in good agreement. There are some large differences in Philadelphia and Boston (>33.3% of the average of the two models).

  Don, I can't get into Euro... How does KFRG look... Thanks.... abck to work. will check in a few if you can just ID south shore LI west to east.

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The 18z forecasts from the 12z runs of the NAM and GFS have shown little difference so far. The NAM has done bett4er in Charlottesville and Richmond. The GFS has done better in Raleigh and Roanoke. At this very early stage of the event, the lack of major differences in performance is not too surprising. How the each model has fared at 0z might provide some insight, especially if both models remain far apart with regard to the extent of heaviest snows.

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The Cobb Method Algorithm for the 12Z GFS is onboard now with 17" at LGA, doing it mostly with a 15:1 ratio on a little more than inch of precip.

Wish we would see 15:1. Most likely no where near the coast. Wind is going to completely eat at any growth. Not only that but temps wont help either. 8/10:1. Higher ratios on backside.

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