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Potential for a rather potent severe weather event


weatherwiz

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Is that where they need to be in our area to get a sig. Long tracker?

 

 

It is definitely preferred. You can sustain supercells longer in that environment.

 

But with a very good low level shear profile and some good LL lapse rates, you can still get some tornadoes...that is what Chris is hitting on. A discrete cell that pops will want to rotate in this environment...it's just the lower ML lapse rate creates a greater risk of the cells shearing apart before they can get healthy enough to feed on the low level shear profiles and sustain themselves. So it's a waiting game right now...see if the ML lapse rates tick up...and of course, any discrete convection that fires we will follow to see how well they hold up.

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It is definitely preferred. You can sustain supercells longer in that environment.

 

But with a very good low level shear profile and some good LL lapse rates, you can still get some tornadoes...that is what Chris is hitting on. A discrete cell that pops will want to rotate in this environment...it's just the lower ML lapse rate creates a greater risk of the cells shearing apart before they can get healthy enough to feed on the low level shear profiles and sustain themselves. So it's a waiting game right now...see if the ML lapse rates tick up...and of course, any discrete convection that fires we will follow to see how well they hold up.

 

Well ALY should be in the air, and we're about to launch one ourselves. At least give us an idea of whether or not the RAP mesoanalysis is out to lunch or not.

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The Revere tornado had pretty marginal mid level lapse rates, but the shear, low LCLs, and rich low level moisture allowed for a brief spin up. So you can get them with the help of the low levels. This aftn is a bit of a different setup, so if there is one..it's probably not going to form the same way the Revere one did. Different environment and setup. The environment (as long as the instability cooperates) would be more favorable for something on the ground for more than 1 scan. But, need to instability.

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Recall yesterday when the busts were called in Michigan and it ended up being a later show than modeled or forecast. You wonder if that's what's about to happen in New Eng

It's not quite the same setup, as there was strong to extreme instability within ML lapse rates >8 C/km. Still, it was late blooming over IA/IL and the storm mode stayed largely discrete. You'd prefer that over a big line of storms or a mess of convection blowing up too early in the game. Keep baking the atmosphere, added instability won't hurt.
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Pretty huge that dewpoints are in the low 70s across SNE...that is often a good way to offset some other imperfections. So often, we try and get severe in SNE with like mid to upper 60s dewpoints.
That will be extended.[/quote

Thanks. I might be a bit too far NW for the bedt dynamics. But hopefully can muster better than this morning.

79.4/71

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Wiz or Mets?, is there any concern with the dews mixing out.

I suppose it's possible on a SW flow the dews could fall back a bit.  HFD has been slowly rising as they've remained south but once BDL went SW it seems the dews came back a bit.  Westfield I think went to SW too so we'll see if their dew comes back a bit.  But they should climb again I would think 

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