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2 minutes ago, Blizzard-on-GFS said:

Yupp, and a lot of times the areas kissing the changeover line in these events jackpot. I’d garner I-95 from Philly to NYC will do quite well from this. 4-8” with no changeover is looking likely. Goofus is lost by discounting the cooling that will occur with these rates.

Curious on how the NAM model has performed this season.

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12 minutes ago, LongBeachSurfFreak said:

That’s exactly how you could get it done. And that’s why I caution anyone going with low totals for the coast.

Hopefully that’s right and we see something like this. Always dangerous relying on dynamic cooling though. Hopefully the weaker models come around. And I’m still wary as always about the NAM being overdone. 

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If the crappier outcome models like the GGEM and GFS come in better tonight, the NAM might be worth something. If they stay lousy, I’d lean still to the NAM being overdone. And there’s also the Euro, which was amped but overall too warm near the city for much IMO. Having the NAM be the one model with a real shot at a good event around the city isn’t the best hand to play. But it is plausible. 

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1 minute ago, Metasequoia said:

Interesting call by Upton. Most models have lowered snowfall amounts every run for last 24 hours (I don't know about Euro or Ukie).

Yeah Mt Holly calling for 3-7 in my area. I really don't think so. 57 degree high today, and 45 on Sunday, and somehow on a south wind we are supposed to get 3-7 Sat night. I really doubt it. maybe 3 wet inches. It would have to be a heckuva storm to dump 7 overnight. That south wind forecast really bothers me.

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mt holly's disco this morning is very well done

 

Quote

For Saturday and Sunday...The guidance continues to show a quick
moving but potent system developing just off the Mid-Atlantic coast
later Saturday then quickly tracking northeastward away from our
area early Sunday. While the guidance is in good agreement that
precipitation will occur, there continues to be more uncertainty
with the precipitation amounts northwestward and also the
precipitation type especially near and east of I-95. We start with
clouds increasing during the day Saturday and if these thicken
rather quickly, surface heating will be slowed. The airmass in place
is forecast to be chilly but also rather dry in the lower levels
especially.

The guidance differs some with the large scale ascent to the
northwest of the surface low. This will be key in determining not
only the precipitation amounts but the rates. Some guidance suggest
that a ribbon of enhanced lift occurs associated with a rapid
increase in frontogenetic forcing between about 850 mb and 700 mb.
This may become enhanced for a time Saturday night as our region is
within the right entrance region of a potent 250 mb jet. This will
be a quick hitting storm, however there is the potential for a swath
of snowfall rates of near 1 inch per hour. As of now, we are
thinking this is near and just north and west of I-95. However
despite the surface high well east-northeast of our area, some hints
of cold air damming lingering and this could be enhanced some due to
wet bulbing effects. Therefore, a thumping of snow may very well
occur for parts of our region namely near and west of I-95. Farther
to the northwest across our area, there looks to be less QPF but
snow to liquid ratios should be the highest in the vicinity of the
Poconos. Farther south and east across Delmarva and central to
especially southern New Jersey, enough warming should result in a
zone of some mixing (mainly rain/snow but some sleet is possible
briefly) with any snow going over to rain closer to the coast. In
between these zones, a wetter snow if enough accumulates at a fast
rate could result in some power outages. We continue to not include
any ice amounts as freezing rain may be limited and this is much
less certain given marginal surface temperatures where it could
occur.

Given the above, the quick hitting nature of this event and our
latest forecast snow amounts, we opted to go with a Winter Storm
Watch for Saturday night for all of eastern Pennsylvania (except
Delaware and Philadelphia counties) and northern New Jersey. It is
here where we have the highest snow amounts which could approach
warning criteria for some areas but this is uncertain, as is the
western fringe due to potentially less QPF. Since there is the
potential for some higher totals and enhanced rates and to also help
with our messaging efforts, we felt a watch was a good way to go at
this point. To the east of the watch area, a tier of advisories will
be possible. Our precipitation types were derived from a blend of
several models with some adjustments then made.

The system quickly moves away early Sunday and all the precipitation
should be done by 5 AM. As the flow turns northwest and increases
some with drier air arriving, clouds are expected to clear out for
much of the area. The flow is progressive however and therefore
Sunday afternoon will be on the milder side with plenty of snow
melting occurring.

 

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23 minutes ago, Stormlover74 said:

Nam still favoring Philly and South Jersey. Advisory level for everyone else

this just supports the idea most of NYC metro will be mostly snow with no mix of rain or change to rain as some unnamed METS ( save that for the vendor thread ) are advertising this morning.

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2 minutes ago, bluewave said:

The 12z NAM came out much less amped up than recent runs. This would be a very rare snowy coup for southern sections during such a warm La Nina February if it verified. Looks much more like something that we see in an El Nino February. Go figure...

nam_3hr_snow_acc_nj_21.thumb.png.06d9c865229b9e5be8c0cbb8e634a8c1.png

 

 

 

 

 

Which is probably why it won’t happen LOL.  Then again I said from the beginning this wasn’t coming north like many were thanking.  As pointed out in the SNE forum a few minutes ago though, this may just be the standard meet in middle point and it starts coming slightly north again the final 36 hours 

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