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Oct 31- Nov 2nd Storm Disco


Damage In Tolland

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Just for kicks here is the 6z GFS snowfall totals in a different more zoomed graphic.

 

@JimCantore: For Halloween & weekend many areas in the northeast should experience their first snow of the season. This includes the coast & big cities! 

 

A little to early to be spreading that kind of news to the general public don't ya think? He's talking like were getting this snowstorm like '11.

 

Screenshot19_zps2ab27897.png

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One of the features this system has going for it is an amplifying ridge out in the western plains/Rockies...helped by the deep trough off the west coast. You'd much rather have a ridge amplifying than de-amplifying or static if you are rooting for a deeper solution.

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I may be a minority on this board, but I hardly look at models for winter weather (at least IMBY), until around Thanksgiving time. I'm still hoping for 60's for a few more weeks to save on utilities, lol.

That being said, maybe we can all squeeze a few flakes out of this, but I don't think any of it is 'very interesting'.

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If this goes south and blows up, it will draw in an area of warmer air in the 950-850 area. There is a very narrow area to work with. This isn't like December and beyond were we cheer for something further south to get in on the CCB.

 

 

We'll want a really deep 5H low just SE of us in this one...get a solid inverted trough to get the best snow potential...because yeah, the preceding airmass isn't cold enough in this one to get a typical coastal snowstorm.

 

Basically like what the 00z Euro showed except a bit further SE.

 

Coast would probably have trouble in any scenario this early....but a powerful ULL just to the SE would prob be the best shot for them. (kind of like Oct 29, 2005)

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We'll want a really deep 5H low just SE of us in this one...get a solid inverted trough to get the best snow potential...because yeah, the preceding airmass isn't cold enough in this one to get a typical coastal snowstorm.

 

Basically like what the 00z Euro showed except a bit further SE.

 

Coast would probably have trouble in any scenario this early....but a powerful ULL just to the SE would prob be the best shot for them. (kind of like Oct 29, 2005)

 

For flakes or minor acc the euro would work for sure. I'm just referring to those that want this to dig south and blow up like some of the GEFS members. Event the euro at 925mb floods maine with milder atlantic air. Something like the euro op only 100 miles S would work I think...but it's going to pull back warmer air before we get things to crash. Not much room for error for those that want something bigger. However the euro and GFS both put down some minor accumulation thanks to some mid level deformation. Vort max on the 6z GFS gets quite intense. 

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A good step in the right direction anyways, but you can see how you may want to be on the west side of this thing if indeed it tries to take on inv characteristics.

 

 

If anything the GFS was too far south this run...digs and closes the thing off south of 40N when it passes our longitude. But it shows the type of evolution we want...if it does that same thing a bit further north, then it would probably be even better for many.

 

But I feel kind of silly talking about an inverted trough at 5 days out. :lol:

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If anything the GFS was too far south this run...digs and closes the thing off south of 40N when it passes our longitude. But it shows the type of evolution we want...if it does that same thing a bit further north, then it would probably be even better for many.

 

But I feel kind of silly talking about an inverted trough at 5 days out. :lol:

 

LOL, well the evolution is interesting. I followed up about this being a little too far south and then kicked east, but like you said..it shows the type of evolution.  When I was saying a narrow window, it gets really narrow with these inv early season troughs!

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Granted the GFS tends to be a bit too warm in these early season setups, but you can see the fuel for this feature with that tug of warmer air right into and just north of the 850 low. The strongest lift is at this feature and then spreads out or deforms across NY state and western NE where there is more of a mid level front. So if this were to be the actual type of scenario, you want to be more on the west side of it, if it cannot form a mature CCB. If we did get a mature CCB then all bets are off, but just speaking of this scenario. 

 

post-33-0-45387800-1414427187_thumb.gif

 

 

post-33-0-51702600-1414427195_thumb.gif

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GEFS are definitely way ENE. Better for downeast Maine.

Extremely late phase on the mean which is certainly possible.

 

However, not sure if you looked at the 06z GEFS mean or not, the 12z mean is slightly closer to the coast than 06z.

 

06z mean valid 00z Saturday

 

gfs-ens_z500_mslp_eus_20.png

 

12z mean valid 00z Saturday

 

gfs-ens_z500_mslp_eus_19.png

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