DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 270724
SWODY3
SPC AC 270723

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0223 AM CDT SAT OCT 27 2012

VALID 291200Z - 301200Z

...DELMARVA TO SRN NEW ENGLAND...

HURRICANE SANDY IS EXPECTED TO LIFT NWD THEN BE DRAWN INLAND NEAR
THE NJ COAST LATE IN THE PERIOD. A QUICK TRANSITION TO EXTRA
TROPICAL CHARACTERISTICS WILL ENSUE AS SANDY IS ABSORBED BY
APPROACHING TROUGH AND CENTER OF CIRCULATION SHOULD TRACK NWWD
ACROSS PA DURING THE OVERNIGHT HOURS. POOR LAPSE RATES AND COOL
BOUNDARY LAYER CONDITIONS WILL LIMIT SFC BASED INSTABILITY WITH
IMMEDIATE CIRCULATION AS IT MOVES INLAND. THERE IS SOME CONCERN
THAT WEAK SFC-BASED BUOYANCY MAY DEVELOP ACROSS PARTS OF COASTAL SRN
NEW ENGLAND LATE IN THE PERIOD AS HIGHER QUALITY PW CURRENT SHIFTS
TOWARD THE COAST. EVEN SO SANDY WILL BE MOVING AWAY FROM THIS
REGION AND THE PROSPECT FOR ROBUST TSTM DEVELOPMENT SHOULD PROVE
SOMEWHAT MARGINAL.

...NRN ROCKIES...

WEAK INSTABILITY WILL EVOLVE ACROSS PORTIONS OF THE NRN ROCKIES FROM
EXTREME ERN ORE/WA INTO SWRN MT. SCATTERED CONVECTION AND PERHAPS A
FEW TSTMS MAY DEVELOP ACROSS THIS REGION AHEAD OF PROGRESSIVE
SHORT-WAVE TROUGH.

..DARROW.. 10/27/2012

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