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First weekend of Feb storm


Ian

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A 200HR rainstorm on the 18Z GFS tends to not generate much interest.

The 18Z GFS looks awful pretty much in the entire medium to extended range...rather warm looking througout essentially the entire east with a decent ridge. And not too long ago, it looked quite cold for the same general period...go figure!:arrowhead:

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I took a look at the EURO closer and think that the 12Z run is crap at Day 5 and should be tossed.

The problem is that it phased the northern system with the southern energy coming of the southwest. That phase serves to yank the southern vort apart. Euro probably holds the southern vort back too much and is inconsistent with the 0Z run.

12Z Euro:

post-772-0-83308700-1296523045.gif

With such a fast flow at 500mb and the fact that we cant get a storm to phase all year (this current system is a great example- the southern vortmax has outrun the northern energy diving in, hence why we are left with energy in the 4 corners for this storm!) I just don't see a phase of any kind happening.

No phase is an important factor, and we need the southern wave out front of the vort diving in through the plains. Why? That will promote a high pressure north of the storm in NE/ME/ and southern Canada, giving us a northerly flow for the storm, and maybe allowing it to slow down enough so the northern vort can catch it late.

While I don't trust any guidance in this pattern past 48 hours, and certainly not any model thermals at all... the 18Z GFS ensemble members show a decent storm and snow event in these parts if the set up is occurs with the southern vort out infront of the "clipper" behind it.

Thread the needle maybe, but maybe one of the "seasonal trends" (lack of or delayed phasing) will help us out on Friday night.

18Z GFS Members:

post-772-0-49158700-1296522940.gif

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he changed his tune when the Euro weeklies came out last week; other modeling seems to be trending toward it the past few days

What does he say? The thing I see is mor tendency for a SE ridge but I'm not a long ranger.

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The 84 hour nam keeps the weekend storm idea alive with its jazzed up southern stream. if it were to go to our south with enough oomph we might be able to beat the lack of a neg nao and surface high.

:thumbsup:

Good to finally see some positive energy on this board.

That energy got much stronger from 18z

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The 84 hour nam keeps the weekend storm idea alive with its jazzed up southern stream. if it were to go to our south with enough oomph we might be able to beat the lack of a neg nao and surface high.

yeah it looks like it would end up better than the gfs which is marginal

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What does he say? The thing I see is mor tendency for a SE ridge but I'm not a long ranger.

basically, ridge in Alaska turns into a trough and SE ridge pops

he's basing it all on the Euro ensembles

he does say that its warm for about 3-4 weeks until it gets cold again around 3/10-3/15

a lot of good that does us

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The 84 hour nam keeps the weekend storm idea alive with its jazzed up southern stream. if it were to go to our south with enough oomph we might be able to beat the lack of a neg nao and surface high.

sorta reminds me of the 2/87 storm, if not its evolution, its marginal temps

I think it got to 42 at BWI the day before it snowed

fwiw, JB thinks big cities, except Bos, turn to rain

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