DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 031953
SWODY1
SPC AC 031951

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0151 PM CST SUN MAR 03 2013

VALID 032000Z - 041200Z

...NO TSTM AREAS FORECAST...

...20Z UPDATE...
NO CHANGES NEEDED...SEE PRIOR DISCUSSION BELOW.

..GUYER.. 03/03/2013

.PREV DISCUSSION... /ISSUED 0941 AM CST SUN MAR 03 2013/

...SYNOPSIS...
A LARGE UPPER TROUGH COMPOSED OF SEVERAL DISTINCT VORTICITY MAXIMA
RESIDES OVER THE ERN CONUS LATE THIS MORNING...AND WILL PROGRESS EWD
ACROSS THE WRN ATLANTIC BY TONIGHT. SURFACE LOW PRESSURE POSITIONED
AHEAD OF THE TROUGH...AND HIGH PRESSURE SITUATED OVER THE MS VALLEY
WILL MAINTAIN OFFSHORE FLOW AND A STABLE ATMOSPHERE THROUGHOUT THE
FORECAST PERIOD ACROSS THE ATLANTIC COAST REGION. FARTHER W...A
SHORTWAVE TROUGH DIGGING SEWD ACROSS THE NRN ROCKIES AND A WEAK
IMPULSE ENTERING CA WILL BEGIN TO PHASE LATE TONIGHT. COLD MIDLEVEL
TEMPERATURES AND STEEP LAPSE RATES ASSOCIATED WITH BOTH OF THESE
WAVES HAVE AIDED IN ISOLATED LIGHTNING STRIKES THIS MORNING. THOUGH
THESE FEATURES MAY SUPPORT A FEW MORE STRIKES TODAY AND
TONIGHT...COVERAGE IS FORECAST TO BE BELOW 10 PERCENT...WHICH WILL
PRECLUDE THE INTRODUCTION OF CATEGORICAL THUNDER AREAS.

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