SWODY3
SPC AC 180724
DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0224 AM CDT SUN APR 18 2010
VALID 201200Z - 211200Z
...SYNOPSIS...
A LARGE UPPER TROUGH WILL CONTINUE DIGGING SEWD OVER THE WRN U.S.
THIS PERIOD...MOVING ONSHORE EARLY AND THEN CONTINUING SEWD ACROSS
THE CA/NV REGION AS A CLOSED LOW THROUGH THE END OF THE PERIOD. AS
THIS OCCURS....AN ASSOCIATED/STRONG COLD FRONT WILL CONTINUE
SHIFTING EWD ACROSS THE GREAT BASIN/SOUTHWEST.
DIURNALLY-DRIVEN SHOWERS AND THUNDERSTORMS ARE AGAIN FORECAST ACROSS
PARTS OF THE WEST NEAR/AHEAD OF THE UPPER SYSTEM...OVER THE HIGH
PLAINS IN CONJUNCTION WITH LEE TROUGHING...AND EWD INTO PARTS OF
KS/NEB INVOF A SEWD-MOVING MID-LEVEL SHORT-WAVE TROUGH. ANY SEVERE
THREAT THIS PERIOD IS EXPECTED TO BE LIMITED...AND LIKELY CONFINED
TO THE CENTRAL HIGH PLAINS AND VICINITY INVOF THE LEE TROUGH. WHILE
VERTICAL SHEAR PROFILES WILL LIKELY BE SUFFICIENT TO SUPPORT
ORGANIZED UPDRAFTS...LIMITED BOUNDARY LAYER MOISTURE/AIRMASS
DESTABILIZATION SHOULD LIMIT ANY THREAT. ADDITIONALLY...WITH
LARGE-SCALE RIDGING TO PERSIST ACROSS THIS REGION AND APPRECIABLE
CONVECTIVE POTENTIAL TIED TO MORE SUBTLE/EMBEDDED SHORT-WAVE
FEATURES...WILL REFRAIN FROM INTRODUCING ANY SEVERE PROBABILITIES
THIS FORECAST.
..GOSS.. 04/18/2010
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