DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 060749
SWODY3
SPC AC 060748

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0148 AM CST THU MAR 06 2014

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS/FORECAST...
A BAND OF QUASI-ZONAL...ENHANCED MID-LEVEL FLOW WILL EDGE SWD INTO
THE NRN STATES AS HEIGHTS FALL ACROSS PORTIONS OF SRN CANADA INTO
THE GREAT LAKES REGION OWING TO CYCLONIC VORTICITY ADVECTION
PRECEDING MULTIPLE MIGRATORY IMPULSES. TO THE S OF ONE OF THESE
IMPULSES...A VORT MAX ORIGINALLY CENTERED OVER AZ AND NM WILL BE
SHEARED ENEWD. THE PRIMARY PERTURBATION ANCHORING THE WRN EXTENT OF
THE ENSUING ENE/WSW-ORIENTED TROUGH MAY ONLY SLOWLY SHIFT SWD WHILE
ENHANCING A SUBTROPICAL STREAM TO ITS S.

IN ASSOCIATION WITH THESE DEVELOPMENTS...A SFC COLD FRONT WILL
ADVANCE SEWD TO THE E OF THE ROCKIES...MARKING THE LEADING EDGE OF A
REINFORCING CONTINENTAL POLAR AIR MASS. AS THIS FRONT UNDERCUTS
WEAKLY MODIFIED RETURN MOISTURE ACROSS PARTS OF S TX WITHIN A MODEST
ELEVATED WARM ADVECTION REGIME PRECEDING THE SHEARING TROUGH --
ENHANCED BY LOW-AMPLITUDE PERTURBATIONS IN THE SUBTROPICAL STREAM --
SUFFICIENT ELEVATED BUOYANCY MAY EXIST FOR ISOLATED NON-SEVERE
THUNDERSTORMS. SPORADIC LIGHTNING STRIKES CANNOT BE RULED OUT
ELSEWHERE ACROSS ERN PORTIONS OF THE SRN PLAINS AND THE CNTRL/SRN
ROCKIES...THOUGH SCANT MOISTURE AND A DEARTH OF BUOYANCY IN THESE
AREAS PRECLUDE GENERAL THUNDER DELINEATION. ELSEWHERE...
THUNDERSTORMS WILL BE UNLIKELY.

..COHEN.. 03/06/2014

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