Cold Core Low Question

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SouthFloridawx
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Cold Core Low Question

#1 Postby SouthFloridawx » Tue Aug 08, 2006 11:29 pm

GFS develops a pretty strong cold core low. I first noticed this on the GFDL run 18Z where it had tropical storm force winds into the Northeast and Canada.

GFS also shows a short wave and a cold front associated with it making it pretty far south ... NWS mia mentions this in todays DISCO earlier that I posted in another thread.

Is this a normal type of feature that we would see during the summer time because it kind of reminded me of an Nor-Easter type of low.

Hope someone gets what I am asking here.

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#2 Postby btangy » Wed Aug 09, 2006 12:29 am

Although unusual to see a deep low forming off the East Coast, it isn't unheard of. Nor'Easters can happen anytime during the year if an upper level trough digs deeply over the East Coast.

Particularly for the tropics, the front associated with this low will stall pretty far S and we could see something subtropical or tropical form along this boundary in about 5+ days.
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#3 Postby WindRunner » Wed Aug 09, 2006 6:17 am

Whoa, South, careful there. Anything outside of the grid in the GFDL is often rather inaccurate, even compared to the track output it has for the storms. If you aren't seeing this with any other models, don't worry about it.
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#4 Postby SouthFloridawx » Wed Aug 09, 2006 8:44 am

WindRunner wrote:Whoa, South, careful there. Anything outside of the grid in the GFDL is often rather inaccurate, even compared to the track output it has for the storms. If you aren't seeing this with any other models, don't worry about it.


http://moe.met.fsu.edu/cyclonephase/gfs ... phase1.png
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#5 Postby WindRunner » Wed Aug 09, 2006 10:46 am

SouthFloridawx wrote:
WindRunner wrote:Whoa, South, careful there. Anything outside of the grid in the GFDL is often rather inaccurate, even compared to the track output it has for the storms. If you aren't seeing this with any other models, don't worry about it.


http://moe.met.fsu.edu/cyclonephase/gfs ... phase1.png


Oh . . . the top one is from GFS . . . sorry! :oops:

Then yes, that is unusual to have that deep of a extratropical system form in that location this time of year.
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Re: Cold Core Low Question

#6 Postby Hybridstorm_November2001 » Wed Aug 09, 2006 1:09 pm

SouthFloridawx wrote:GFS develops a pretty strong cold core low. I first noticed this on the GFDL run 18Z where it had tropical storm force winds into the Northeast and Canada.

GFS also shows a short wave and a cold front associated with it making it pretty far south ... NWS mia mentions this in todays DISCO earlier that I posted in another thread.

Is this a normal type of feature that we would see during the summer time because it kind of reminded me of an Nor-Easter type of low. ]


This is what I was alluding to yesterday, and wondering if it might have a effect on the future track of 91L. Basically I wonder how much this might erode the Western Atlantic part of the ridge, or if it might not do so at all (at least far enough south).

PS: They are already talking about possible "branch breaking winds" up here. Should be interesting to see what happens.
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