DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 271642
SWODY2
SPC AC 271641

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1141 AM CDT SAT OCT 27 2012

VALID 281200Z - 291200Z

...NO TSTM AREAS FORECAST...

...SYNOPSIS...
AN UPPER RIDGE WILL BE MAINTAINED OVER MAINE/ADJACENT ST LAWRENCE
RIVER VALLEY ON SUNDAY...WHILE THE ERN EXTENT OF THIS RIDGE
UNDERGOES STRENGTHENING OVER AND E OF THE CANADIAN MARITIMES.
MEANWHILE...A SHORTWAVE TROUGH DIGGING SEWD FROM THE NRN RCKYS TODAY
WILL AID IN FURTHER AMPLIFICATION OF THE SRN EXTENT OF A
NEGATIVELY-TILTED CENTRAL/NRN NORTH AMERICA LONGWAVE TROUGH SHIFTING
E INTO THE ERN STATES. THE RCKYS TROUGH SHOULD EVOLVE INTO A CLOSED
LOW OVER THE CENTRAL APPALACHIANS LATE DAY 2. EACH OF THE
AFOREMENTIONED LARGE SCALE FEATURES ARE EXPECTED TO PLAY A ROLE IN
THE EVOLUTION OF HURRICANE SANDY INTO AN EXTRA-TROPICAL SYSTEM
BEYOND DAY 2. FOR OFFICIAL DETAILS ABOUT SANDY...PLEASE REFER TO THE
NATIONAL HURRICANE CENTER AVAILABLE AT HTTP://WWW.NHC.NOAA.GOV.

...MIDDLE ATLANTIC STATES...
HURRICANE SANDY IS EXPECTED TO MOVE NEWD THEN CURVE NWD WITH THE
CENTER REMAINING E OF THE NC/VA COASTS THROUGH THE DAY 2 PERIOD.
WITH THE EXCEPTION OF NEW ENGLAND...MOSTLY OFFSHORE FLOW FORECAST E
OF THE ROCKIES WILL RESULT IN THERMODYNAMIC PROFILES REMAINING QUITE
UNFAVORABLE FOR MOIST-DEEP CONVECTION THAT COULD REACH LEVELS
REQUIRED FOR LIGHTNING DISCHARGE. THUS...TSTMS ARE NOT ANTICIPATED
ACROSS THE CONUS SUNDAY.

..PETERS.. 10/27/2012

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