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Threat Thread


ski MRG

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Dryslot will take this kind of Retro in a heartbeat, so 69 ish

Its more Dec 81-ish in the respect that a lot of Maine might actually change to rain on the 12z Euro...I think SW Maine stays fine...Dryslot in Lewiston may flirt with the rain briefly on that solution.

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Hm. The ECM this run is a continuity break - particularly in its handling of the NAO blocking trainwreck in the north Atlantic/Greenland/D. Straight region, which then has profound impact on what can take place further SW in LAT/LON.

While it is hard not to be optimistic in this pattern - let's proceed with cautious optimism with that. I'd like to see a minimum of 3 cycles and the inclusion of other guidance types here as well. One aspect I would like to elaborate upon is that as we were discussing earlier surrounding needing the NAO to relax a bit, we actually see the operational ECM doing exactly that now on this run - in a quasi sense it's assisting along the Archambaultian solution less from the PNA modality and more from the NAO suddenly weakening.

That sudden weakening beginning D6 and ending D10 lowers the compression on the geopotential medium, which in turn allows the embedded S/W to begin thermodynamically differentiating more proficiently - this results in greater height falls --> feeding back on a deeper strong leading system.

Again, the timing of the NAO decay appears instrumental there, and given to this sped up aspect being a continuity shift I strongly urge waiting a minimum of 3 cycles (to mention some agreement).

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Oh god, We are bringing up the 1969 map up again??? Does anyone remember what happened around Feb 25 of 2010? 2' turned into 3 inches of rain and power outages. Lets give this a couple of days before we bring out the 1969 and 1981 maps again please.

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Oh god, We are bringing up the 1969 map up again??? Does anyone remember what happened around Feb 25 of 2010? 2' turned into 3 inches of rain and power outages. Lets give this a couple of days before we bring out the 1969 and 1981 maps again please.

Lol. I was just going to inquire as to whether the lower amounts along the Maine coast were due to mxiing.

35.4/25

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That's my concern..I don't think this done trending yet..and the coast may have some issues..this isn't Feb..It's Dec water temps aren't that cold

The winds are out of the NW on a retrograde setup. The water temps aren't a concern, the actual mid-level temps would be if it retrograded too far.

I actually do not think the retrograde solution is all that likely...I'm thinking a more straight Miller B redevelopment might be the most likely scenario should we get anything of significance at all. There's still a very real chance we whiff on this.

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That's my concern..I don't think this is done trending yet..and the coast may have some issues..this isn't Feb..It's Dec water temps aren't that cold

Might be early to worry/hope about trending west. I think it's worthy to consider John's words about waiting a few cycles to build confidence in this being the system to watch (if I'm reading him correctly).

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The winds are out of the NW on a retrograde setup. The water temps aren't a concern, the actual mid-level temps would be if it retrograded too far.

I actually do not think the retrograde solution is all that likely...I'm thinking a more straight Miller B redevelopment might be the most likely scenario should we get anything of significance at all. There's still a very real chance we whiff on this.

I think until Wed/Thurs, we have to assume that this is going to be miss. There's no sense in getting hyped up on a storm this is 7-8 days out. 4-5 days then its time to start taking it seriously. One thing I did read in the "Where we are at and where we are going" thread, is that with this pattern, it is extremely hard for the models to forecast 4-5 days out, not only 7-8 days. Something to keep in mind.

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The winds are out of the NW on a retrograde setup. The water temps aren't a concern, the actual mid-level temps would be if it retrograded too far.

I actually do not think the retrograde solution is all that likely...I'm thinking a more straight Miller B redevelopment might be the most likely scenario should we get anything of significance at all. There's still a very real chance we whiff on this.

cannot be emphasized enough.

this is just like the opposite situation when people start jumping into their bathtubs with their hairdryers on (those of us without hair excluded) because a day 7-10 prog shows a massive rain storm and 55F.

take the run with a grain of salt and give it a few days here.

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I think until Wed/Thurs, we have to assume that this is going to be miss. There's no sense in getting hyped up on a storm this is 7-8 days out. 4-5 days then its time to start taking it seriously. One thing I did read in the "Where we are at and where we are going" thread, is that with this pattern, it is extremely hard for the models to forecast 4-5 days out, not only 7-8 days. Something to keep in mind.

I suppose if there were intra- and inter- model agreement, confidence could build. May the 18z GFS will show it:)

34.6/25

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The winds are out of the NW on a retrograde setup. The water temps aren't a concern, the actual mid-level temps would be if it retrograded too far.

I actually do not think the retrograde solution is all that likely...I'm thinking a more straight Miller B redevelopment might be the most likely scenario should we get anything of significance at all. There's still a very real chance we whiff on this.

Well until the Euro today I was thinking this would just be a Clipper with 3-6 north of the path..I still don't buy the retro either. But if it was a miller B coast would again have issues this early..at least until it bombed out

Either way we are gonna get snow out of this..Just need to figure out exactly what setup..I'm leaning towards the clipper idea

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cannot be emphasized enough.

this is just like the opposite situation when people start jumping into their bathtubs with their hairdryers on (those of us without hair excluded) because a day 7-10 prog shows a massive rain storm and 55F.

take the run with a grain of salt and give it a few days here.

LOL, you know people will remember this statement, and then forget about it when the 18z finishes in about 40 minutes. laugh.gif

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I suppose if there were intra- and inter- model agreement, confidence could build. May the 18z GFS will show it:)

34.6/25

Its almost a guarantee the 18z GFS will show a HECS. Then everyone will get hyped. Then the 00z GFS shows no snow. That's how it works.

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Well until the Euro today I was thinking this would just be a Clipper with 3-6 north of the path..I still don't buy the retro either. But if it was a miller B coast would again have issues this early..at least until it bombed out

Either way we are gonna get snow out of this..Just need to figure out exactly what setup..I'm leaning towards the clipper idea

I'm not sold on the retro either, but if this were to happen, I could see this head ne and then perhaps turn more north with time. That would probably be better for the coast, because winds would have a more northerly component. it also depends on what 950-850 temps are.

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