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Model discussion for May


Ginx snewx

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There could be either along the back door front or from a fropa arriving later in the week. Better chance of rain with that fropa down by you I think.

If we get that BDF to stall just south of us Sun/Mon then we could get a nice little rain event.

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Where are you guys seeing this backdoor cold and misery? I don't see anything that gives us 50's and NE flow. I don't see anything actually that gets inland areas below 70 until day 10. At least on the op runs

Well it's May so obviously the KFS doesn't see a BDF.
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Well it's May so obviously the KFS doesn't see a BDF.

 

06z GFS sort of stalled out the boundary in a spot where it would produce a decent rain event for many...Euro wasn't quite as optimal, but still a definite signal...but who knows, it could either be up in central/Northern Maine or on the south coast..esp at this lead time:

 

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If we get that BDF to stall just south of us Sun/Mon then we could get a nice little rain event.

Yeah that's our shot like the GFS has. I was referring to the scenario with the cold front in which you'd favor better instability down there, but yeah I'm hoping for the GFS scenario. Could use some rain.

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And still no one answered my question.

 

It depends on the model, Kevin - 

 

The GGEM is about the least emphatic about that idea ...the Euro a step up, where the GFS has been an unrealistic bully with anything N-stream since the last incremental upgrade in the model -- talking late Saturday, the Euro shows a bubble high slipping through the N Gulf of Maine/Maritimes, which can't happen without drilling a boundary SW.  

 

But, it's weak enough in the overall depiction that if one is going with that midland Euro verbatim ... (neolithically incompetent to do so at this sort of time lead...), it's probably not a strata deck sort of invasion ... More like simialar sky type, with 20F lopped off for eastern zones, with flags wobbling from the E/NE.  Still pleasant.  

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There could be either along the back door front or from a fropa arriving later in the week. Better chance of rain with that fropa down by you I think.

Thanks. We need the rain as with everything blooming they call for a lot of water.

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That's because you are the only one that has mentioned 50s over the past day or two.

depending on the run the euro op has had afternoon 40s/50s for some in that Sun-Mon window. If some are going to buy d10 warmth they at least have to entertain a d6-7 BDCF...right?
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depending on the run the euro op has had afternoon 40s/50s for some in that Sun-Mon window. If some are going to buy d10 warmth they at least have to entertain a d6-7 BDCF...right?

 

:weenie:

 

But seriously, there are probably more ways for a forecast to bust because things verify on the cold side than the opposite being true this time of year.

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Sounds like the Euro op has it from Dendrites post.

 

It's def more for CNE on the Euro...and maybe E MA...but it's semantics when it is 7 days out. It could easily be over NYC or up in N ME...so who knows for sure. GFS actually lays the frontal boundary to our south and rides ripples of low pressure along it which would give us stratiform precip.

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It's def more for CNE on the Euro...and maybe E MA...but it's semantics when it is 7 days out. It could easily be over NYC or up in N ME...so who knows for sure. GFS actually lays the frontal boundary to our south and rides ripples of low pressure along it which would give us stratiform precip.

 

But that boundary looks really diffused from the synoptic panels... Not sure what other data folks are using to discern that sort of impact, but it hasn't been on the synoptic charts really ... But, again, I'm not using discrete products by any stretch -

 

Over the years I've noted that BD air invasions don't all knock temps down the same way.. When the BD is more synoptic driven, it seems the cool down isn't quite as sudden, where the exact extent of which actually takes until the next day to be realized more fully.  

 

Contrast, when the BD sort of teams up with GOM SSTs.. It's almost like some impetus to move the air mass SW got it going, but is more modulated by SST chilling.  Those are the kind when it's 83 going into the grocery store, and 64 coming back out. I almost think of shallower boundaries as being more harsh at times because of that.  

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Early next week seems like best chance as the front comes down. Hopefully with rain.

 

That latter Sunday set up ... you know what that almost looks like... 

 

You have a western Lake cyclone passage with long warm front subtended clear east through Main...  The flow is stationary to that boundary aloft, while being SW/WSW at the surface... With better moisture pooling by then, that "could" be interesting for nocturnal ... warm frontal triggered then moves ESE type deal...

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That latter Sunday set up ... you know what that almost looks like... 

 

You have a western Lake cyclone passage with long warm front subtended clear east through Main...  The flow is stationary to that boundary aloft, while being SW/WSW at the surface... With better moisture pooling by then, that "could" be interesting for nocturnal ... warm frontal triggered then moves ESE type deal...

 

Yeah perhaps if we can get s/w in there. Doesn't strike me as a textbook setup though.

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