SWODY1
SPC AC 110059
DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0759 PM CDT TUE APR 10 2007
VALID 110100Z - 111200Z
..THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF SERN OK...NERN
TX...AND SWRN AR...
..SERN OK/NERN TX INTO SWRN AR...
SCATTERED SHOWERS AND THUNDERSTORMS -- INCLUDING A COUPLE OF
SUPERCELLS OVER S CENTRAL OK -- HAVE DEVELOPED THIS AFTERNOON IN
MARGINALLY-UNSTABLE AIRMASS INVOF WARM FRONT NOW DRAPED FROM S
CENTRAL OK ESEWD ACROSS THE RED RIVER INTO NERN TX. THOUGH AIRMASS
WILL LIKELY REMAIN CAPPED S OF THIS FRONT...A CLUSTER OF STORMS WILL
LIKELY PERSIST/MOVE EWD ACROSS SERN OK/NERN TX INTO AR OVER THE NEXT
SEVERAL HOURS. GREATEST THREAT FOR LOCALLY-DAMAGING WINDS AND AN
ISOLATED TORNADO OR TWO WILL LIKELY EXIST FOR ONLY THE NEXT 1-2
HOURS OVER S CENTRAL OK...AS STORMS ARE NOW NEARING THE ERN FRINGE
OF SURFACE-BASED INSTABILITY AXIS. HOWEVER...WHILE STORMS SHOULD
BECOME INCREASINGLY-ELEVATED AS THEY SHIFT EWD
OVERNIGHT...SUFFICIENT INSTABILITY AND SHEAR EXIST FOR A CONTINUED
THREAT FOR HAIL WITH ORGANIZED/ROTATING STORMS.
..S FL...
WIDESPREAD THUNDERSTORMS CONTINUE FROM THE ERN GULF INTO S FL...WITH
STRONG STORMS INDICATED FROM BROWARD COUNTY WSWWD INTO THE GULF N OF
THE KEYS ATTM. EVENING MFL /MIAMI FL/ RAOB SHOWS MINIMAL
INSTABILITY DUE TO WEAK MID-LEVEL LAPSE RATES...AND WITH OUTFLOW
BOUNDARY CONTINUING TO MOVE SWD ACROSS MIAMI-DADE AND MONROE
COUNTIES...SURFACE-BASED SEVERE THREAT SHOULD CONTINUE TO DECREASE.
HOWEVER...WITH FAVORABLE DEEP-LAYER SHEAR SUPPORTIVE OF ORGANIZED
UPDRAFTS...A FEW STRONGER STORMS MAY CONTINUE INTO THE OVERNIGHT
HOURS...ACCOMPANIED BY A MARGINAL HAIL THREAT -- PARTICULARLY S OF
THE PENINSULA INTO THE KEYS WHERE GREATER INSTABILITY IS INDICATED.
.GOSS.. 04/11/2007
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