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Flaking Our Way Into MLK Weekend 1/17-1/18


Clinch Leatherwood

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My guess. I think its way underdone in the cape

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Not bad, I'd be more cautious down this way by an inch for right now, not sure why.  Maybe 18 months of getting hosed.

 

Looks like most of us are shoveling tomorrow. Amazing turn of events this afternoon

 

That's ridiculous at this stage.

 

if the euro has .4 for most of cape at 0z it's time to adjust those amounts a bit higher. i think other models are playing catch up wrt n. stream vort handling. could be wide spread 4-5 inch snows on cape tonite with 1-2 regionwide over CT /RI E MA as the rev mentioned.

 

It's close, .3 to .4" ish over most of the Cape even me.  I'd agree with the other statement.  6 runs of the Euro isn't a burp. Every other afternoon model coming in this direction including the crappy, almost always surpressed 18z NOGAPS tells me something.  The RGEM and NOGAPS aren't biting in entirety, they are more like the NAM at 18z. 

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Well the Euro is certainly interesting lol.

 

The Euro has like 0.35" at DCA where op GFS/op NAM and the SREF mean is around 0.2-0.25". Watch DCA over the next few hours and see if they overperform.

 

I still think this is a non-event for most of us NW of UUU-GHG... but I am interested in seeing the 15z SREFs. 

fail

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Ryan's boss on board

@BradNBCCT: southern USA snowstorm grazing parts of CT tonight...southern & eastern CT might get a coating to 1" after midnight, ending by daybreak...

love brad-he's such a weenie for snow! Great met though...loved watching him back when I watched TV newscasts....
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fail

 

I don't think the Euro looks that bad based on the 3 hour...pretty much what it expected.

 

Harv up here has FLURRIES for me, most of the cape, dusting to 2" for Phil.   That's it.  Doubting him is folly.  That said I think he's wrong.  He didn't elaborate really, his own maps showed 3.5" for Phil.  Basically said he doesn't think the precip gets as far north...etc etc.

Euro maps always had DC right on the edge of the higher RH....while increasing it here quickly from here on out.  Not that worried about it yet (dry air)

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The airmass over our region is quite dry, however, forecast soundings do suggest the column will moisten up as we move through the evening.  The high pressure to our north is also pretty strong which could really work against any meaningful precip working into the region.  The Cape though could get grazed with some snow showers.  

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Here is what's going on. The models basically bring a piece of frontogenesis moving in thanks to the sharpening nrn stream trough after 06z. Very evident as they blow up precip to the NNE instead of more ENE. You can see this on the H7 VV fields. However, look at 850mb. Strong push of CAA and subsidence below 700mb. That will eat the echoes up alive. Unless the forcing aloft is so strong...I think it will be hard for this I-95 area to see more than flakes or a coating. 

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The airmass over our region is quite dry, however, forecast soundings do suggest the column will moisten up as we move through the evening.  The high pressure to our north is also pretty strong which could really work against any meaningful precip working into the region.  The Cape though could get grazed with some snow showers.  

snow showers huh

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Here is what's going on. The models basically bring a piece of frontogenesis moving in thanks to the sharpening nrn stream trough after 06z. Very evident as they blow up precip to the NNE instead of more ENE. You can see this on the H7 VV fields. However, look at 850mb. Strong push of CAA and subsidence below 700mb. That will eat the echoes up alive. Unless the forcing aloft is so strong...I think it will be hard for this I-95 area to see more than flakes or a coating. 

I personally think our 95 area has a strong chance of seeing northing, looking at 2m RH on the euro 

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Here is what's going on. The models basically bring a piece of frontogenesis moving in thanks to the sharpening nrn stream trough after 06z. Very evident as they blow up precip to the NNE instead of more ENE. You can see this on the H7 VV fields. However, look at 850mb. Strong push of CAA and subsidence below 700mb. That will eat the echoes up alive. Unless the forcing aloft is so strong...I think it will be hard for this I-95 area to see more than flakes or a coating. 

 

 

As Phil mentioned, its pretty ugly when most of the flow is out of the west or northwest except the very lowest levels. It needs to be pretty impressive ML fronto to overcome that.

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Here is what's going on. The models basically bring a piece of frontogenesis moving in thanks to the sharpening nrn stream trough after 06z. Very evident as they blow up precip to the NNE instead of more ENE. You can see this on the H7 VV fields. However, look at 850mb. Strong push of CAA and subsidence below 700mb. That will eat the echoes up alive. Unless the forcing aloft is so strong...I think it will be hard for this I-95 area to see more than flakes or a coating. 

 

I was going to mention that as well.  There looks to be some decent forcing aloft thanks to jet energy but the best QPF stays far enough offshore.  Any QPF over us is very, very light and I wouldn't think it amounts to much.  Different story along the Cape though, a little better moisture convergence there along with increased frontogenesis so they certainly could see heavier snow showers and maybe a dusting or so.

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Here is what's going on. The models basically bring a piece of frontogenesis moving in thanks to the sharpening nrn stream trough after 06z. Very evident as they blow up precip to the NNE instead of more ENE. You can see this on the H7 VV fields. However, look at 850mb. Strong push of CAA and subsidence below 700mb. That will eat the echoes up alive. Unless the forcing aloft is so strong...I think it will be hard for this I-95 area to see more than flakes or a coating. 

 

Agree for now.  Euro 80% RH fields were about the cutoff for anything of significance south.  That barely makes it to about I95 later.

 

I personally think our 95 area has a strong chance of seeing northing, looking at 2m RH on the euro 

 

Right on the fence I'd agree based on the Euro.

 

The two things to watch...sometimes the RAP does pick up on things and it's getting close to scooting out the southern system too fast.  As it was, I think this last run was the most impressive so far for the Cape.

 

2nd is all the caveats...especially that as modeled there's not much lift and usually when that happens we smoke cirrus. 

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