The following is the Final Extended Forecast Discussion out of the HPC...the same website which includes a current and out to 7 day surface analysis -

EXTENDED FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER COLLEGE PARK MD
313 PM EDT THU OCT 25 2012

VALID 12Z SUN OCT 28 2012 - 12Z THU NOV 01 2012

...HIGH IMPACT MERGING OF ENERGETIC SYSTEMS ANTICIPATED OFF THE
MID ATLANTIC COAST...

PRELIMINARY UPDATE...

DESPITE A MODEST CLUSTER OF OUTLYING DETERMINISTIC SOLUTIONS AND
ENSEMBLE MEMBERS FROM THE VARIOUS MODELING CENTERS, THE LION'S
SHARE OF GUIDANCE INDICATES THAT THE CIRCULATION ASSOCIATED WITH
HURRICANE SANDY WILL PASS CLOSE ENOUGH TO THE AMPLIFYING POLAR
TROUGH OVER THE EASTERN UNITED STATES TO BECOME INCORPORATED INTO
A HYBRID VORTEX OVER THE MID ATLANTIC AND NORTHEAST NEXT TUESDAY.
THE HIGH DEGREE OF BLOCKING FROM EASTERN NORTH AMERICA ACROSS THE
ENTIRE ATLANTIC BASIN IS EXPECTED TO ALLOW THIS UNUSUAL MERGER TO
TAKE PLACE, AND ONCE THE COMBINED GYRE MATERIALIZES, IT SHOULD
SETTLE BACK TOWARD THE INTERIOR NORTHEAST THROUGH HALLOWEEN,
INVITING PERHAPS A GHOULISH NICKNAME FOR THE CYCLONE ALONG THE
LINES OF "FRANKENSTORM", AN ALLUSION TO MARY SHELLEY'S GOTHIC
CREATURE OF SYNTHESIZED ELEMENTS.

AS IS OFTEN THE CASE, WHEN ONE PART OF THE NATION IS EXPERIENCING
A VERY ENERGETIC ATMOSPHERE DISTURBANCE, THE REMAINDER IS
RELATIVELY CALM. THIS EVENT SHOULD NOT PROVE THE EXCEPTION, WITH A
FAIRLY BENIGN FEED OF PACIFIC AIR INTO MOST OF THE WESTERN AND
CENTRAL STATES. THE FAR WEST, PARTICULAR NORTH OF CALIFORNIA, WILL
HAVE ENOUGH SUSTAINED ONSHORE FLOW TO KEEP THE PERIOD WET AND
UNSETTLED.

FINAL...

UPDATED THE TRACK OF SANDY TO FIT THE 15Z/25 NATIONAL HURRICANE
CENTER TRACK THROUGH 5 DAY, WHICH DOVETAILS WELL INTO THE HYBRID
LOW POSITIONS THEREAFTER FOR DAYS 6 AND 7. BOTH THE 12Z/25 GFS AND
GEM GLOBAL BRING THE LOW INTO THE NEW YORK CITY AREA, WITH THE
ECMWF DIRECTING IT INTO THE LOWER DELMARVA PENINSULA. THE UPSHOT
FOR SENSIBLE WEATHER IS THE SAME- HIGH WINDS AND HEAVY RAINS FOR
AREAS ALONG THE TRACK OF THE TROPICAL REMNANT, WITH HEAVY SNOWS
POSSIBLE ON THE SOUTHWEST EDGE WHERE THE CONTINENTAL POLAR AIR
RUSHES ACROSS THE UPPER OHIO VALLEY AND CENTRAL APPALACHIANS AND
ADJACENT LOWLANDS TO THE EAST.

CISCO