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February 8th Potential Bomb Part II


earthlight

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Assuming the Euro doesn't fizzle, I'd expect Upton to post winter storm watches with the afternoon package (and even the northern part of the Mt. Holly AFD), since watches are done largely to raise awareness about a potential major snowstorm and we potentially have a major snowstorm coming and no new important data will be coming in until tonight's 0Z runs.  Watches are usually posted 24-48 hours in advance of arrival and we'll be within about 36 hours of arrival at 4 pm today.  Of course, I could be wrong...

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Most big events in the NE US end up having a sharp cutoff and somebody ends up getting screwed.

 

I was highlighting the primary dying out in the OV Miller-b type rather than the miller A miss that portions of the MA saw with boxing day.

The antecedent warmth that the OV primary will bring complicates things even more as there would be warmth to overcome

rather than starting out cold from the beginning. If this was a miller A, we wouldn't have to worry about the timing of closing

off as much since we would have more time to accumulate.

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The models appear to still be trending, I don't think they are done trending just yet. Based on what I'm seeing, I'm fully aboard now (fingers crossed). I think the Euro will stay the course and not back off because like I said, I think the other models are still trending towards it. 

 

 

I think what's important to note is that now that the GFS has improved, a compromise between the Euro and GFS is actually a very snowy solution for us. Whereas previously, a compromise between the two models was not necessarily a snowy solution for us.

 

This is why I'm more confident now. 

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Slightly off topic, but I am extremely concerned about the areas, especially in the coastal communities, that were the hardest hit by Sandy. Many areas have not even halfway recovered as of yet.

The new moon coming up means we would see higher than average tides, and the wind potential would certainly be high. Hopefully the maximum potential from that stays in areas that weren't as heavily damaged as we were, but in Long Beach alone there are many people still living in homes with no heat. Flooding is always another concern as well given the beaten up shore.

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that is almost a complete rain event

 

It is verbatim but the GEM looks to phase everything 6 hours or so before the GFS and as we know while the RGEM pytpes are often very accurate inside 24-36 the GGEM's are warm in a situation when you're in the CCB portion of a storm, I'd say by this point below NYC/LI are snowing and there is plenty to come after....

 

I_nw_g1_EST_2013020612_063.png

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Slightly off topic, but I am extremely concerned about the areas, especially in the coastal communities, that were the hardest hit by Sandy. Many areas have not even halfway recovered as of yet.

 

Winds will be North at the time they are strongest hence a lessened chance for coastal flooding. Plus largest seas will be directed away from the area. Kind of like the November noreaster when there was much fear and little if any damage.

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The GEM is now likely snowier than the GFS here and closer to the Euro, it may not show that but it likely is, the GGEM has major issues showing ptypes 1 or 2 categories too warm often on these bombing coastals.

 

not according to that link Snow88 posted....

 

sans the precip type maps, i always find it difficult to read the GGEM maps...

 

are you assuming that the GGEM is snowier or have you analyzed?

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Take a MACRO view of this , there is not 1 MODEL warmer than 24 hours ago

.

EVERY model has trended better , the question is when does that stop ....

Lets see if the Euro is locked on here . But how can anyone not see that as many times we see stuff break down , this has coming closer to what we want .

As is , if we blended all the models its our biggest storm since NOV .

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not according to that link Snow88 posted....

 

sans the precip type maps, i always find it difficult to read the GGEM maps...

 

are you assuming that the GGEM is snowier or have you analyzed?

 

Using experience more than anything, I think by 63 hours its snow on the GEM even though it shows the R/S line sitting just north of the Metro area...its just not likely once the coastal has taken over and is sub 990 that we would not see the R/S line into at least central-eastern LI...the GEM for whatever reason likes to be too warm on ptypes.

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It is verbatim but the GEM looks to phase everything 6 hours or so before the GFS and as we know while the RGEM pytpes are often very accurate inside 24-36 the GGEM's are warm in a situation when you're in the CCB portion of a storm, I'd say by this point below NYC/LI are snowing and there is plenty to come after....

 

I_nw_g1_EST_2013020612_063.png

thanks for the explanation - ignore my last post

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Using experience more than anything, I think by 63 hours its snow on the GEM even though it shows the R/S line sitting just north of the Metro area...its just not likely once the coastal has taken over and is sub 990 that we would not see the R/S line into at least central-eastern LI...the GEM for whatever reason likes to be too warm on ptypes.

much appreciated, thanks.

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not according to that link Snow88 posted....

 

sans the precip type maps, i always find it difficult to read the GGEM maps...

 

are you assuming that the GGEM is snowier or have you analyzed?

He posted that he sees that the GGEM phases earlier than the GFS (6 hours or so) which is in line with the 0z Euro so correct for the poor precip depiction known to plague the GGEM as a huge bias in these types of storms and bam you have a snowier result than the GFS.

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the models which show ccb overhead and precip type issues from experiences we've all had it should bring us pause that it will unfold like that. If the phase occurs too late, a la the NAM, then we get crappy warm air advection form the northern stream s/w and rain. In basically every other situation, unless the low tucks into the coast too much (which no model shows), we have a healthy development of the CCB at least overhead, if not slightly earlier. What that means to me at least is that we should still manage significant accumulations UNLESS the trends reverse and we get a late phase. A phase on top of us or further south should yield healthy precip amounts with crashing temps, dynamic cooling and heavy precip rates. 

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the models which show ccb overhead and precip type issues from experiences we've all had it should bring us pause that it will unfold like that. If the phase occurs too late, a la the NAM, then we get crappy warm air advection form the northern stream s/w and rain. In basically every other situation, unless the low tucks into the coast too much (which no model shows), we have a healthy development of the CCB at least overhead, if not slightly earlier. What that means to me at least is that we should still manage significant accumulations UNLESS the trends reverse and we get a late phase. A phase on top of us or further south should yield healthy precip amounts with crashing temps, dynamic cooling and heavy precip rates. 

Right-I think if we get a good amount of the CCB overhead it's likely to be very heavy snow. Places might struggle initially but the same process in developing that banding will also crash the temps.

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the 4.9in of liquid and 50 something inches of snow for boston reminds me of dec 09 in DC and baltimore where the NAM came in one run all of a sudden with a snow bomb and something like 60 inches lol. Reality was still almost two feet. Although qpf was not nearly as high as what is currently predicted, maybe only 3.5

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