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Late January and February Medium/Long Range Discussion


WinterWxLuvr
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Just now, stormtracker said:

Yup...right again :(. just not so wide

It's definitely closer than prior runs, which I think is a positive step with still some time left to mediate the smaller shifts into something more respectable. One thing I do like is the prospects of a little snowfall prior to the SLP generation with a bit of a diffluent signature prior to the mean trough pivoting eastward. I think that could still give a touch of snow to the area regardless of the coastal outcome. An earlier neutral/neg tilt would only enhance the pre-game component. Something to monitor in the grand scheme of it all. 

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1 minute ago, psuhoffman said:

It was a significant improvement. Rome wasn’t built in a day. 0z was a good run. Now we need to build on it and not slide backwards at 12z. 

2 minutes ago, stormtracker said:

There are definitely some good trends tonight that makes most of the negative day yesterday a wash.

agreed

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Nice synopsis by Mount Holly this morning-

In the long term, all eyes are on the end of the week as a potential storm takes shape off the US East Coast. The Arctic high pressure from midweek remains in control through Thursday. From there, the range of possible outcomes diverges wildly. With strong ridging present in the West, a deep trough will dig into the Southeast, with a strong shortwave embedded within the base. This trough will gradually tilt from positive to neutral or negative as it moves towards the Southeast coast. This will spur offshore cyclogenesis, with its strength and placement dependent on how fast the trough begins to tilt negative. In addition, the developing storm appears likely to eventually phase with a northern stream shortwave dropping out of Canada, which would yield further intensification as it moves north or northeast. The track of this developing low will then determine potential impacts for the Northeast and mid-Atlantic. Based on the potent nature of the shortwaves involved and with unusually strong baroclinicity likely to be present, this has the potential to be a strong storm. Certainly cannot ignore the number of various ensemble system members and occasional deterministic runs showing sub-970mb cyclones along or within striking distance of the Northeast and mid-Atlantic coasts. At this early stage, a multi- cycle consensus of model guidance favors a glancing blow for our region, with potentially greater impacts towards New England or Atlantic Canada. However, this system does have some of the hallmarks of previous high impact storms where medium range models displayed a right of track (ROT) bias. And ensemble spread has generally been favoring the left side of the means and deterministic runs. So we are definitely not out of the woods, but we also have several days to watch this, and it will likely be some time before we can definitively say whether there will be any impacts locally.

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1 minute ago, MillvilleWx said:

That 06z GFS was a MASSIVE step in the right direction. If you go to pivotal and look at the model trend for the 2PVU Pressure, it is very close to what happened on that magical 18z Saturday run. The shifts are stark, there is no denying it. 

You could see the Major changes coming by 96

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1 minute ago, MillvilleWx said:

That 06z GFS was a MASSIVE step in the right direction. If you go to pivotal and look at the model trend for the 2PVU Pressure, it is very close to what happened on that magical 18z Saturday run. The shifts are stark, there is no denying it. 

Much prognostications and gnashing of teeth this week…it’s on

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