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The March 6 Storm- The (last) Great White Hope


stormtracker

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There's no reason to post unless you have new info to add... I don't post when things are bad because I don't care as much. I don't follow it as closely nor spend much time on my own interpretations. Dunno if this was directed at me or not, but I kinda feel like it was.

It wasn't.

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The GFS pinches off the NW Atlantic / New England wave so much that it meanders to Lake Ontario this run. Also, the northern wave that the storm breaks off originally has no effect. Between the NW Atlantic wave breaking off so far west and the lack of any momentum transfer from the northern wave, the storm is free to amplify/go negatively tilted sooner.

This is the first run that did that with the NW Atlantic/New England wave. By retrograding west this much, it allows the ridging to improve and gives room for the wave to amplify over the Mid Atlantic.

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GFS much warmer, would be half a rain event even up into parts of the DC metro

Not with those rates. Soundings have consistently been below freezing where it counts. It will be messy on the surface but not rainy for most until you get closer to the bay.

Gfs is showing a ridiculous pivoting deform band. Someone would have tssn for sure (verbatim)

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The GFS pinches off the NW Atlantic / New England wave so much that it meanders to Lake Ontario this run. Also, the northern wave that the storm breaks off originally has no effect. Between the NW Atlantic wave breaking off so far west and the lack of any momentum transfer from the northern wave, the storm is free to amplify/go negatively tilted sooner.

This is the first run that did that with the NW Atlantic/New England wave. By retrograding west this much, it allows the ridging to improve and gives room for the wave to amplify over the Mid Atlantic.

 

any clue with the BL is warmer slightly? All this should indicate more cold air injection.

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any clue with the BL is warmer slightly? All this should indicate more cold air injection.

Why would this indicate more cold air? The stuff I'm talking about is influencing the amplification.

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I remember the morning of PDI, after the insane rates ended and it was light snow at the very end of the storm temps were at 34 or so

insane rates sure can help but there's other stuff going on that can spoil the cooling effects of those rates..I just don't know what they are technically speaking

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You knew the snow gods wouldn't make them sit this one out. Our event will end up being a sideshow, you watch. 

 

 

Most of us mets up there are having some fun at the expense of the GFS. Its a terrible model in big east coast storms...it makes Tony Romo look like a clutch QB. It almost nevers scores the coup in big storms. I'd be surprised if it did in this one. I do think the Euro is too far south, but I'd bet dollars to donuts its a lot more right than the GFS...especially as it pertains up to this region. For down there in that region, a slight shift north of the Euro makes it a much better storm for BWI and northward.

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Why would this indicate more cold air? The stuff I'm talking about is influencing the amplification.

 

normally injection from a Northern Stream shortwave would mean more cold air becuase of air mass source region, although in this case, since it broke off from the original storm to some extent, that rulle probably doesn't apply.

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Most of us mets up there are having some fun at the expense of the GFS. Its a terrible model in big east coast storms...it makes Tony Romo look like a clutch QB. It almost nevers scores the coup in big storms. I'd be surprised if it did in this one. I do think the Euro is too far south, but I'd bet dollars to donuts its a lot more right than the GFS...especially as it pertains up to this region. For down there in that region, a slight shift north of the Euro makes it a much better storm for BWI and northward.

Even at 48 hours out?

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Even at 48 hours out?

 

 

Esp at that time range...though for SNE, the storm would be more like 72-96 hours as it flips the ULL slowly northward after it exits the Mid-atlantic coast. The meat of the event for DC is still about in the 60 hour range.

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the evolution of the GFS is just weird to me. I highly doubt this phases up the coast. I don't buy that retrograding vort in to NNE at all unless I see other models pick up on it or more run to run consistently. GFS has been ALL over the place with the evolution of the N Atl low. This kind of variance IMO is quite ridiculous this close in.

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