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New England Storm Dicussion - January 11-12


Baroclinic Zone

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Man, this is a tough forecast for western areas, I don't know what to think at this point. As a :weenie:, I want to believe the GFS is too far east but I also think the NAM is overdoing it...maybe the ECM is a good compromise?

I am thinking the same thing which means waiting. But the trend in the RGEM and Srefs in the past 12-18 hours has consistently been more precip and further West. The Nam has even gotten more intense and slightly more west with the PCP as far as I rememver. GFS has stayed pretty much constant.

I think I am going with a SREF // Euro combo for pcp amounts....

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I have a buddy who works for the NWS in North Carolina. He says and i quote " All I can tell you is that the NAM omega fields nailed our snow band today whereas the GFS missed it." good sign for us weenies

The 18z run was a little too far north for ATL, but did show the mega band even there.

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Is it possible that this is a pattern that the GFS doesn't do as well with? I realize the last couple of storms were in very anomalous patterns whereas this seems more like a straightforward miller b hybrid.

That's what Tip says.

Ok, now off to bed.

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SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE

NWS NCEP CENTRAL OPERATIONS CAMP SPRINGS MD

0253Z TUE JAN 11 2011

00Z NCEP PROD IS ON SCHD WITH NAM TO POST PROCESSING

AND THE GFS UNDERWAY. 30 CAN 6 MEX AND 3 CARIB RAOBS

WERE ABVL FOR THE GFS. ALSO 8 DROPSONDE AND 13 FLIGHT

LEVEL RECON REPORTS OVER THE WESTERN ATLC WERE AVBL FOR

THE GFS IN SUPPORT OF THE DEVLPG AND POTENTIALLY MAJOR

EAST COAST STORM. RAOB UPDATE...

XMR/74794 - DELETED TEMPS 719-690 MB...WET-BULB EFFECT.

why not incude it in the NAM???

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Is it possible that this is a pattern that the GFS doesn't do as well with? I realize the last couple of storms were in very anomalous patterns whereas this seems more like a straightforward miller b hybrid.

In this last system in the same rough pattern (was only 48 hours ago) the RGEM/NAM were consistently too far NW and got tooled by the Euro/GFS/UK. It's impossible to say what is right but I did post the maps earlier today showing the GFS having verified very well in the last day or two, same with the Uncle Ukie.

This will be the storm that we either shelve the NAM mentally, or all give it another great chance. I'm in the shelve category, I think this run had some real issues post 33+. I may be wrong and won't be too proud to admit if it that's the case. I think it's doing the same thing as the other day...again.

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SENIOR DUTY METEOROLOGIST NWS ADMINISTRATIVE MESSAGE

NWS NCEP CENTRAL OPERATIONS CAMP SPRINGS MD

0253Z TUE JAN 11 2011

00Z NCEP PROD IS ON SCHD WITH NAM TO POST PROCESSING

AND THE GFS UNDERWAY. 30 CAN 6 MEX AND 3 CARIB RAOBS

WERE ABVL FOR THE GFS. ALSO 8 DROPSONDE AND 13 FLIGHT

LEVEL RECON REPORTS OVER THE WESTERN ATLC WERE AVBL FOR

THE GFS IN SUPPORT OF THE DEVLPG AND POTENTIALLY MAJOR

EAST COAST STORM. RAOB UPDATE...

XMR/74794 - DELETED TEMPS 719-690 MB...WET-BULB EFFECT.

why not incude it in the NAM???

HUGE!

I don't think they can and get it out in time.

So that's huge. Tons of extra recon and we have a new solution.

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I am thinking the same thing which means waiting. But the trend in the RGEM and Srefs in the past 12-18 hours has consistently been more precip and further West. The Nam has even gotten more intense and slightly more west with the PCP as far as I rememver. GFS has stayed pretty much constant.

I think I am going with a SREF // Euro combo for pcp amounts....

I'm hedging on the side of caution..even though that burned me in the last storm. :lol: This is a different beast though. I decided for my initial call for DXR I'm going with 5-10"..if I need to up it then I will but if the GFS never comes around I'm going to have a hard time doing that. How much does the ECM give western CT?

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HUGE!

I don't think they can and get it out in time.

So that's huge. Tons of extra recon and we have a new solution.

My 2 cents. Means very little. We heard this song and dance 12/26 only that time "bad data". Anyway...looks like the same old solution more or less to me.

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I think there was an event last winter (maybe the winter before?) where a 12z NAM run went bonkers for SNE and TV mets went aggressive for a lot of snow. I think a lot of schools closed early before snow even was supposed to start falling. In the end it ended up being a light rain/snow mix for a lot of places with little, if any, accumulation.

I'm not saying it relates to this system, but it just came into my mind. Anyone remember the date for that one?

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