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January 2019 General Discussion & Observations


Rtd208

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32 minutes ago, NycStormChaser said:

There have been a few tornado warnings out in western PA this morning. 

One of the big stories since October has been these unusually steep mid-level lapse rates. Had these occurred in the warm season, we would have had MDT risk days.

http://www.pivotalweather.com/model.php?m=nam&p=lr75&rh=2019010812&fh=18&r=conus&dpdt=

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Just now, bluewave said:

One of the big stories since October has been these unusually steep mid-level lapse rates. Had these occurred in the warm season, we would have been talking about MDT risk days that we seldom get.

http://www.pivotalweather.com/model.php?m=nam&p=lr75&rh=2019010812&fh=18&r=conus&dpdt=

PA had its third largest tornado outbreak in history in October. Had that setup occurred in the spring or summer it could have been a May 31 1998 redux.

https://en.wikipedia.org/wiki/Late-May_1998_tornado_outbreak_and_derecho#May_31_New_York_and_Pennsylvania_tornadoes

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9 minutes ago, Gravity Wave said:

PA had its third largest tornado outbreak in history in October. Had that setup occurred in the spring or summer it could have been a May 31 1998 redux.

https://en.wikipedia.org/wiki/Late-May_1998_tornado_outbreak_and_derecho#May_31_New_York_and_Pennsylvania_tornadoes

Yeah, we could also have  been talking longer lived stronger tornadoes.

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Just now, bluewave said:

A compromise between the CMC/GFS and more southerly EURO/UK would yield only lighter precipitation getting this far north.There is bound to be a sharp cutoff with some much HP over New England. 

Agreed. But a late north trend like we've seen so often could put the coast into moderate precip. 

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Impossible to know at this range when a Canadian vort is going to rotate down.  If the timing is off even 6 hours the storm comes further north.  Also possible since we have northern energy in Canada largely playing a role here that the NAM and GFS might sniff this out more accurately inside 72 than the Euro which sometimes struggles with energy up in Canada 

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55 minutes ago, bluewave said:

It’s similar to the Euro. The French site has it.

https://www.meteociel.fr/modeles/ukmo2.php?carte=1021&ech=72&nh=1&archive=0

Didn't see North America maps/data on that site, unless I'm just missing it.  Also it is odd that the English UK meteocentre site doesn't have the 12Z UK run from today - again, unless I missed that too, lol.  Always found the UK site to be confusing...

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