DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 090549
SWODY1
SPC AC 090547

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1147 PM CST SUN DEC 08 2013

VALID 091200Z - 101200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A BROAD BELT OF STRONG SWLY FLOW ALOFT WILL EXTEND FROM THE LOWER MS
VALLEY INTO THE NERN STATES AS A SECONDARY SHORTWAVE TROUGH DIVES
SEWD ACROSS THE NRN PLAINS. AT THE SURFACE...A WEAK LOW PRESSURE
TROUGH WILL EXTEND FROM THE CNTRL GULF COAST INTO THE MID
ATLANTIC...WITH A PLUME OF ELEVATED MOISTURE AND POCKETS OF WEAK
INSTABILITY ALONG AND JUST N OF THE SURFACE FRONT. THIS BOUNDARY
WILL BE THE LONE FOCUS FOR THUNDERSTORM POTENTIAL AS A COLD AND DRY
AIR MASS REMAINS TO THE WEST.

...LA/MS NEWD INTO VA...
A PLUME OF MOISTURE AND WEAK INSTABILITY WILL BE IN PLACE MONDAY
FROM LA/MS NEWD INTO THE MID ATLANTIC...WITH SHOWERS AND ISOLATED
LIGHTNING STRIKES POSSIBLE THROUGH THE PERIOD. FORCING WILL BE DUE
MAINLY TO WEAK ISENTROPIC LIFT ATOP THE EXISTING COLD FRONT.

OVERNIGHT...LIFT WILL INCREASE AGAIN FROM AL INTO THE SRN
APPALACHIANS DUE TO THE INFLUENCE OF THE SHORTWAVE TROUGH MOVING
INTO THE MS VALLEY. WITH AN INCREASING SWLY LOW LEVEL JET...AN
ISOLATED WEAK STORM WILL AGAIN BE POSSIBLE.

..JEWELL/MARSH.. 12/09/2013

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