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Potential coastal storm 1/26-28


robertgny

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As seen here the main vort is 100 - 150 mile west of Canada. Next how is the upstream vort going to pump up the ridge.  Neither of these things are close to being sampled. The models are jiust throwing out guesses.....and I have no problem having a strong opinion either pro or con the storm.

 

whofvk.jpg

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With a flattening PNA ridge and an absence of blocking, it's difficult to envision the trough in the east sharpening quickly enough so as to hold the clipper close to the coast and then turn it more to the north as it redevelops off shore. If the clipper digs southward as much as is currently forecast, it will move rapidly out to sea off the Mid-Atlantic coast while making a fairly wide turn. Prospects of this clipper producing a significant or major snowfall in the greater NYC area are fairly low in the larger synoptic pattern that is shown on the guidance.

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Why?

 

The last 2 events down there approached more from a W-SW or W direction, this last one had a vort lifting up in the flow.  This one dives in from the NW with a sharper downslope component for them and its trended south again on the Euro at 12z, also the vort sort of opens and gets wishy washy as it reaches near the EC.  I'd want to be in the Oh Valley for this one.

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The GFS is really close to trying to pull this off . We could use another 6 hour separation between tomorrow's system and this one and you would sharpen the trough axis just enough

As it is at 18z the best VV is right through our area and it will not take much for this to develop close enough to effect us.

It's a long lasting cold system . We are not there yet but we are close.

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The GFS is really close to trying to pull this off . We could use another 6 hour separation between tomorrow's system and this one and you would sharpen the trough axis just enough

As it is at 18z the best VV is right through our area and it will not take much for this to develop close enough to effect us.

It's a long lasting cold system . We are not there yet but we are close.

Does any other model show this?
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