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February 12-13 Storm: Title TBD


stormtracker

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The best thing about this setup is there is still a lot of room for improvement. This time tomorrow night we could be looking at a foot + region wide with lollies to 18.

 

I am growing increasingly concerned about the possibility of thunder snow in the places that get into the best dynamics. With this comes the possibility of power outages as the winds begin to increase as the coastal undergoes bombogenesis. 

 

If anything this setup is the polar opposite, a lot can go wrong and its a thread the needle for the most part. 

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The best thing about this setup is there is still a lot of room for improvement. This time tomorrow night we could be looking at a foot + region wide with lollies to 18.

 

I am growing increasingly concerned about the possibility of thunder snow in the places that get into the best dynamics. With this comes the possibility of power outages as the winds begin to increase as the coastal undergoes bombogenesis. 

 

There are still some issues that could mess it up though. No need to go out on a limb for the biggest possible scenario.. To get way past what we've already seen on the Euro we'd need something special to happen like the trough going negative at just the right time or something.  It's not going to move very slowly otherwise. 

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This storm with the least hype and most negativity might be the one lol

The high sucks but the storm is going to run into some really cold air (well, at least the tail end of it... but good pre-game conditions). We need to walk a line with the right track and strength... but as is, hard to be too concerned about the sfc at least. 

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Hadn't seen this in here. From the SE thread.

HPC..... THE MORE NORTHERN SOLUTIONS OF THE 12ZECMWF/UKMET/00Z ECMWF ENSEMBLE MEAN REMAIN POSSIBLE BUT HAVE LOWER PROBABILITIES...DUE IN PART TO THE STRENGTH OF THE SURFACE HIGHFORMING OVER THE NORTHEAST/NEW ENGLAND.

 

I'm not sure if you posted this for something to worry about here or not. But it certainly doesn't worry me. 

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Is this the storm we're talking about. Because WPC is almost dismissing the GFS

 

AMPLIFYING SHORTWAVE MOVING INTO THE SOUTHEAST WED
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
PREFERENCE: NON-GFS COMPROMISE
CONFIDENCE: AVERAGE

A BROAD AND SLOWLY AMPLIFYING RIDGE UPSTREAM SHOULD GUARANTEE A
STRONGER SYSTEM WITH TIME, BUT ITS PROGRESSION HINTS THAT A FASTER
PROGRESSION WITH THIS DOWNSTREAM SHORTWAVE IS MORE LIKELY. THIS
HAS BEEN BORNE OUT IN THE ECMWF TRENDS SINCE ITS 00Z RUN, THOUGH
IT HAS ALSO TRENDED MORE NEGATIVELY TILTED ALOFT. THE 12Z GFS
SHOWS A MENAGERIE OF CONVECTIVE/GRIDSCALE FEEDBACK BULL'S EYES
FROM NORTHERN LOUISIANA EASTWARD FROM LATE TUESDAY ONWARD, WHICH
CAN EXPLAIN ITS QUICKER PROGRESSION. WITH CONVERGING GUIDANCE
ALOFT AND AT THE SURFACE, BELIEVE A NON-GFS COMPROMISE IS THE BEST
COURSE OF ACTION FOR THE TIME BEING, PREFERRED WITH AVERAGE
CONFIDENCE CONSIDERING THE SYSTEM'S PROGRESSIVE NATURE.

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Hadn't seen this in here. From the SE thread.

HPC..... THE MORE NORTHERN SOLUTIONS OF THE 12ZECMWF/UKMET/00Z ECMWF ENSEMBLE MEAN REMAIN POSSIBLE BUT HAVE LOWER PROBABILITIES...DUE IN PART TO THE STRENGTH OF THE SURFACE HIGHFORMING OVER THE NORTHEAST/NEW ENGLAND.

I approve of your reality check

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There are still some issues that could mess it up though. No need to go out on a limb for the biggest possible scenario.. To get way past what we've already seen on the Euro we'd need something special to happen like the trough going negative at just the right time or something.  It's not going to move very slowly otherwise. 

 

 

It looks to me like a pretty typical imperfect 3-6/4-8" event with some mixing south and east....if everything goes perfectly then maybe an event with 8-12" totals...but that would have to be perfect...certainly does not look like a HECS in any fashion......all options are on the table, but a 1"+ all snow event seems unlikely for DC...

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The best thing about this setup is there is still a lot of room for improvement. This time tomorrow night we could be looking at a foot + region wide with lollies to 18.

 

I am growing increasingly concerned about the possibility of thunder snow in the places that get into the best dynamics. With this comes the possibility of power outages as the winds begin to increase as the coastal undergoes bombogenesis. 

Please keep us posted.

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I'm wondering how many times we had this setup and got screwed with changeover/mix issues or a too far west track and lots of rain or a whiff with 1-2" amounts....I am guessing a ton

Probably a fair amount but I am with Bob.. this particular setup is not too common except for the mid level pass.  If we're ever going to cash in on a marginal surface setup it's this time of year, starting overnight, and coming off a cold few days. 

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Snow would prob be in the 10:1 range until it turns to 2:1 sleet and 1:1 rain.

Honestly, no reason to discuss this yet. IF we get snow it will be nice at onset with cold surface/column. Anything goes down the line

it actually might be a 12:1 to 15:1 when it first starts....

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