Tuesday, December 27, 2011

Winter '11 / '12 - Coastal Teaser #1

Bit of a disagreement between us and them about next Wednesday/s weather along the eastern CONUS...

GFS:  27-DEC  12z
VT:  04-JAN-12 12z
ECMWF:  27-DEC  12z
VT:  04-JAN-12 12z
Both models were in fair agreement in the short range but then diverged as the ECMWF deepened a GOM Low which popped a high amplitude PNA-type ridge.  OTOH...GFS did not close the door to the flood of PAC air into the western CONUS and maintained a hi-index flow regime across the lower 48.

Suspect GooFuS will catch up eventually.

POSTSCRIPT:  The 12z Canadian and ECMWF are in excellent agreement through 144 hours in their depiction of a full latitude trof.

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