DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 060824
SWODY3
SPC AC 060822

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0222 AM CST THU DEC 06 2012

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
ADDITIONAL AMPLIFICATION OF THE LARGE-SCALE UPPER TROUGH COVERING
THE U.S. IS FORECAST THIS PERIOD...AS A JET STREAK DIGS SEWD ACROSS
THE NWRN PORTION OF THE COUNTRY AND INTO THE INTERMOUNTAIN WEST. AS
THIS OCCURS...A REINFORCING SURGE OF LOW-LEVEL COLD AIR IS FORECAST
TO CONTINUE SPREADING SEWD ACROSS INTERMOUNTAIN WEST DURING THE
DAY...AND THEN ACROSS THE CENTRAL PLAINS REGION THROUGH THE SECOND
HALF OF THE PERIOD.

SHOWERS AND A FEW THUNDERSTORMS WILL AGAIN BE POSSIBLE IN A WSW-ENE
BAND FROM ERN OK/NERN TX ENEWD ACROSS THE TN AND OH VALLEYS...THOUGH
MODEST INSTABILITY SHOULD HINDER APPRECIABLE ORGANIZATION. DURING
THE SECOND HALF OF THE PERIOD...CONVECTION SHOULD CONTINUE --
PARTICULARLY OVER THE WRN HALF OF THE AREA AS THE REINFORCING
FRONTAL SURGE ARRIVES. WHILE AMPLE SHEAR AND STRONGER ASCENT
ASSOCIATED WITH THIS REINFORCING SYSTEM WOULD SUGGEST SOME THREAT
FOR A FEW STRONGER CELLS...THREAT FOR SEVERE STORMS REMAINS LOW --
INSUFFICIENT TO WARRANT ISSUANCE OF A 5% THREAT AREA THIS FORECAST.

..GOSS.. 12/06/2012

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