DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 071557
SWODY2
SPC AC 071555

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0955 AM CST WED NOV 07 2012

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...WRN U.S...

STRONG HEIGHT FALLS...ON THE ORDER OF 150-180M IN 12HR...WILL SPREAD
ACROSS PORTIONS OF THE WRN U.S. AS UPPER TROUGH DIGS SEWD AND MID
LEVEL SPEED MAX ROTATES INLAND ACROSS CNTRL CA. VERY COLD MID LEVEL
TEMPERATURES WILL ENHANCE LAPSE RATES ALONG THE PACIFIC COAST SUCH
THAT EVEN WITH MARGINAL BOUNDARY LAYER MOISTURE THERE APPEARS TO BE
SUFFICIENT INSTABILITY FOR SHALLOW CONVECTION CAPABLE OF PRODUCING A
FEW LIGHTNING STRIKES WITH THE STRONGER UPDRAFTS. THE MOST LIKELY
REGION FOR ELECTRICALLY ACTIVE UPDRAFTS WILL BE CONFINED TO THE NEAR
COASTAL AREAS WHERE MARINE INFLUENCES WILL AID INSTABILITY.

FARTHER INLAND ACROSS THE NRN ROCKIES...A POCKET OF ASCENT
COINCIDENT WITH STEEPENING LAPSE RATES WILL SPREAD ACROSS THE NRN
ROCKIES. SHALLOW CONVECTION ALONG THE NWRN QUADRANT OF EJECTING SFC
LOW MAY RESULT IN ISOLATED LIGHTNING STRIKES ALONG COLD SIDE OF
BOUNDARY.

ANOTHER REGION WHERE A FEW TSTMS MAY DEVELOP WILL BE ACROSS THE
HIGHER ELEVATION REGIONS OF AZ WITHIN PRE-FRONTAL WARM SECTOR.
MOISTURE WILL GRADUALLY INCREASE AHEAD OF A WEAK SHORT-WAVE TROUGH
THAT SHOULD EJECT NEWD INTO AZ AHEAD OF PRIMARY DIGGING UPPER
TROUGH. MOISTENING MID LEVEL PROFILES AND WEAK ASCENT MAY AID
CONVECTION ACROSS THIS REGION.

..DARROW.. 11/07/2012

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