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Potential 1/17-1/18 threat


BullCityWx

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http://www.wpc.ncep.noaa.gov/discussions/h...php?disc=pmdepd

Quote

GUIDANCE ASSESSMENT/PREFERENCES...

NOTICEABLE DIFFERENCES WERE SEEN AT THE SHORT/MEDIUM RANGE
HAND-OFF IN THE MID-ATLANTIC/NORTHEAST AND ADJACENT W ATLANTIC
AS
A SYSTEM DEPARTS WELL OFFSHORE. MID-LEVEL TROUGH (OR PERHAPS
CLOSED LOW) SHOULD EXIT THE DELMARVA EARLY THURSDAY PER THE 00Z
ECMWF/UKMET/CANADIAN (AND THEIR ENSEMBLES) BUT THE 00Z/06Z GFS
RUNS (AND GEFS ENSEMBLES) WERE QUICKER/WEAKER WITH IT. GIVEN THE
TENDENCY FOR THE GFS TO BE TOO QUICK OPTED TO PUT MORE WEIGHT ON
THE SLOWER CAMP BUT STILL PREFERRED A QUICKER SOLUTION THAN THE
ECMWF-LED CLUSTER VERBATIM
. PLEASE SEE THE LATEST PMDHMD (SHORT
RANGE DISCUSSION) FOR DETAILS ON THIS FEATURE (AND WITH THE LATEST
12Z GUIDANCE) AS IT TRANSLATES INTO THAT TIME RANGE.

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Just now, FallsLake said:

Yep, and wpc is leaning away from the GFS solution. 

I'm in agreement with Griteater.  The WPC discussion I posted above basically expresses low confidence in a final solution and forecast.  There are some big differences between models in the short and medium range, and I would argue that there exists noticeable differences between observations and models in the short range.  There are just so many factors at play with this event.  Don't think we'll have a good idea until tonight.

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