SWODY3
SPC AC 190712
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0212 AM CDT MON APR 19 2010
VALID 211200Z - 221200Z
...SYNOPSIS...
LARGE UPPER LOW SHIFTING SLOWLY SEWD ACROSS THE SWRN U.S. IS PROGGED
TO CONTINUE DEEPENING THIS PERIOD...WITH STRONG SHORT-WAVE RIDGING
EXPECTED TO PERSIST IMMEDIATELY DOWNSTREAM. FARTHER E...TROUGHING
IS PROGGED TO AMPLIFY A BIT OVER THE ERN HALF OF THE CONUS...WHERE
NUMEROUS SMALLER-SCALE WAVES WILL REMAIN EMBEDDED IN THE
LARGER-SCALE CYCLONIC FLOW.
AT THE SURFACE...A STRONG COLD FRONT ASSOCIATED WITH THE LARGE WRN
UPPER SYSTEM IS FORECAST TO MAKE STEADY EWD PROGRESS ACROSS THE
INTERMOUNTAIN WEST. DIURNAL CONVECTION WILL ACCOMPANY THIS STORM
SYSTEM...WITH ISOLATED CONVECTIVE POTENTIAL POSSIBLY EXTENDING AS
FAR E AS THE CENTRAL/SRN HIGH PLAINS. WHILE A STRONGER CELL OR TWO
MAY BE POSSIBLE ACROSS THE HIGH PLAINS AREA...CAPPING/SUBSIDENCE
BENEATH THE UPPER RIDGE ALONG WITH LIMITED BOUNDARY LAYER MOISTURE
EXPECTED SUGGEST ONLY A VERY LIMITED/ISOLATED SEVERE THREAT -- TOO
LOW TO WARRANT THE INTRODUCTION OF ANY SEVERE PROBABILITIES ATTM.
ELSEWHERE...AREAS OF WEAK/DIURNAL CONVECTION ARE EXPECTED OVER PARTS
OF THE ERN U.S. WITHIN THE LARGE-SCALE CYCLONIC FLOW PATTERN.
..GOSS.. 04/19/2010
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