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March Medium/Long Range Discussion


WinterWxLuvr
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1 hour ago, Weather Will said:

WB 18Z EURO at hour 90 looks more like the Canadian than GFS for midweek.  Marginal temps but only storm to watch the next 6 days.

Certainly does. It'd a bit warm though. With 850s and surface freezing line up in PA

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GFS/GEFS is back to emphasizing low pressure along the coast, in contrast to the Euro/CMC, which have a low tracking to our NW late week. I mentioned the best chance for frozen looked like it might be Saturday with some sort of coastal development, and the 6z GFS does exactly that. GEFS still hinting at it. CMC and EPS ens indicate some sort of trailing low but looks very progressive. 

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The Euro has temps into the 60s next Saturday, with heavy rain showers ahead of the front, then the cold comes in later in the day, while the GFS has temps falling into the 30s with a developing coastal low and rain changing to an accumulating snow. Some modest support on the GEFS. Kinda hard to buy into the GFS idea given how progressive the longwave pattern looks, and ofc its recent track history with being overly aggressive with the cold.

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8 minutes ago, Weather Will said:

Unfortunately agreed, not enough cold air to put us in the game for midweek.  Chilly rain on tap according to WB 6Z EURO 

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It's uncertain how much qpf this will even generate. Looks like a fairly weak wave, and the GFS keeps the precip  mostly south. We know the deal this time of year- weak lift/light precip and marginal temps is a non starter.

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3 minutes ago, stormtracker said:

So we just gonna be quiet about the GFS?  Midweek shit looks like shit (I hope it fails...ill be in the air on the way back here).  Saturday is where it's at!  Gooo CAPE

Would be nice to see the other globals to move towards the GFS idea. We shall see.

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The GFS is phasing the NS energy with the southern vorticity sooner, and leaving no energy behind, so the trough is sharp and goes neutral then slightly negative, which allows a surface low to form and and track up along the coast. The CMC and Euro don't have that clean interplay and the trough is broader and positively tilted, so any low that forms just gets shunted out. The GEFS is a little in between, but given the character/orientation of the trough and the location of the coastal low(offshore) depicted on the mean, it is leaning more progressive.

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15 minutes ago, CAPE said:

The GFS is phasing the NS energy with the southern vorticity sooner, and leaving no energy behind, so the trough is sharp and goes neutral then slightly negative, which allows a surface low to form and and track up along the coast. The CMC and Euro don't have that clean interplay and the trough is broader and positively tilted, so any low that forms just gets shunted out. The GEFS is a little in between, but given the character/orientation of the trough and the location of the coastal low(offshore) depicted on the mean, it is leaning more progressive.

In other words...the seasonal progressive tendency lingers into March!

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2 hours ago, Maestrobjwa said:

This winter needed a No Energy Left Behind act...

This comment deserves way more than one like. Nicely done. 
 

As it stands right now, I have no interest in the Wednesday event. Precip chasing marginal cold air after multiple days in the 70s? Non starter for me. Even up here in “snowy” Carroll county. Gonna need to head to buffalo for that one if you want to catch a few sloppy inches at best. The storm, if you can even call it that at this point, has continued to trend weaker. The QPF and precip intensity being advertised won’t get it done   

Saturday? That’s a bit of a different story. My interest is low to medium level for that timeframe. Doesn’t help that the GFS is the only model that is REALLY advertising such a quick advance of cold air (hmm.. where have we heard that before?) ahead of the storm and near perfect timing at h5. With the development of a coastal low and snow almost being entirely dependent on timing, phasing, etc… it’s not very comforting to only have the GFS honking. Good news is we are still a long way out so this is by no means set in stone. It’s hard to imagine us being able to pull this off in mid-March, when we couldn’t do it all winter long, but crazier things have certainly happened. Let’s see the euro and Canadian  move toward the GFS in the coming days and then I’m in for the tracking 

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The Euro and CMC(and their ensembles) are sticking with the warm-wet followed by cold-dry outcome for now.

Check out the Euro vs the GFS for Sat afternoon. It is snowing moderately on the GFS here with falling temps verbatim, while the rain is pushing east and the cold front is about to move through on the Euro.

1647108000-GUjsf2vnFiQ.png

1647108000-zHiRleq3FJE.png

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The Euro and CMC(and their ensembles) are sticking with the warm-wet followed by cold-dry outcome for now.
Check out the Euro vs the GFS for Sat afternoon. It is snowing moderately on the GFS here with falling temps verbatim, while the rain is pushing east and the cold front is about to move through on the Euro.
1647108000-GUjsf2vnFiQ.png
1647108000-zHiRleq3FJE.png
The no snow models are complete bs imo....
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Snippet from Mount Holly AFD regarding Friday into the weekend..

A robust cold front approaching from the west is expected to pass through eastern Pennsylvania, eastern Maryland, Delaware and New Jersey around Saturday morning. The boundary will likely bring additional showers along with a sharp drop in temperatures. A drying trend and below normal temperatures are anticipated for Saturday night and Sunday.

 

Doesn't seem like they are too concerned with the GFS idea, and to be fair it is not depicting a major snowstorm, but it is markedly colder/more wintry. Either way their thinking is some showers followed by a cold front, much like the Euro/CMC depiction.

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