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NYC/PHL: December 24-27th Potential


earthlight

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The 0z GFS run is the best I've seen yet. The initial s/w is strong enough to pump some overrunning light snow into the area starting early Christmas day (frontside overrunning precip often underdone). The mid and upper levels evolve perfectly and the low level tracks take a perfect track for NYC - only slightly less so for Phi. There is no pinwheeling or duel center h5 lows this time around, so the vertically stacking structure is much less progressive, and a moderately long duration event is the result. Obviously QPF would be underdone wherever banding sets up. Things are very unlikely to play out like this, but what a great run!

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  On 12/21/2010 at 4:59 AM, eduggs said:

The 0z GFS run is the best I've seen yet. The initial s/w is strong enough to pump some overrunning light snow into the area starting early Christmas day (frontside overrunning precip often underdone). The mid and upper levels evolve perfectly and the low level tracks take a perfect track for NYC - only slightly less so for Phi. There is no pinwheeling or duel center h5 lows this time around, so the vertically stacking structure is much less progressive, and a moderately long duration event is the result. Obviously QPF would be underdone wherever banding sets up. Things are very unlikely to play out like this, but what a great run!

I think that PHL on northeast has the most "breathing room" for this storm since we don't need a major southern stream component to the storm to have a good-great outcome for us. The low can blow up in time for us and New England to get slammed. Of course, we need the ridge to be west enough and steep enough to slam the northern stream energy down to cause the bomb.

AAARRRGGGHHH, I wish this wasn't over 100 hours out still

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  On 12/21/2010 at 4:55 AM, tombo82685 said:

the gfs ens are off shore but they did nudge west from 18z i believe, stornger signal for a coastal

last feb 5th-7th the GFS ensembles were off by 1.25 inches of qpf 18 hours before a storm...they are garbage

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  On 12/21/2010 at 5:06 AM, stormtracker said:

You were saying? :lol:

Lets hope the GGEM works out...sigh...i hope we aren't relying on the GGEM...ugh

i dont know man...when the GGEM shows extreme solutions 4-5 days out, ive seen the model verify more often than not

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  On 12/21/2010 at 5:06 AM, F5TornadoF5 said:

00z GGEM looks very similar to last night's EURO

Yes. Important differences between tonight's GFS and GEM. The GEM has a much higher amplitude trof and the surface low therefore takes a more southerly route. We might be able to score big in either scenario, but the GGEM is more favorable for people further south along the eastern seaboard.

The GFS also brings light snow in much earlier than the GEM due to the initial wave and associated overrunning precip.

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