SPC AC 190547
DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1247 AM CDT MON OCT 19 2009
VALID 201200Z - 211200Z
...NO SVR TSTM AREAS FORECAST...
...SYNOPSIS...
AN UPPER TROUGH IS FORECAST TO EXIT THE ROCKIES AND BEGIN AFFECTING
THE CANADIAN PRAIRIE/U.S. PLAINS STATES THIS PERIOD. AS THIS
OCCURS...A SURFACE LOW INVOF WRN KS SHOULD WEAKEN THROUGH THE END OF
THE PERIOD WHILE SHIFTING NEWD TOWARD THE UPPER MIDWEST. THIS WILL
ALLOW A SURFACE COLD FRONT TO MOVE SLOWLY EWD ACROSS THE CENTRAL
U.S. AND SWD ACROSS THE HIGH PLAINS THROUGH 21/12Z.
A SLOW-TO-MOISTEN/CAPPED BOUNDARY LAYER IS FORECAST TO PERSIST
ACROSS THE CENTRAL CONUS...WHICH SHOULD INHIBIT MOST WARM-SECTOR
SURFACE-BASED CONVECTIVE DEVELOPMENT. STORMS ARE FORECAST HOWEVER
ACROSS THE SOUTHWEST U.S./SRN ROCKIES IN CONJUNCTION WITH THE MAIN
UPPER TROUGH...AND THEN INTO THE PLAINS OVERNIGHT AS A LOW-LEVEL JET
INCREASES AND SUPPORTS ELEVATED CONVECTIVE DEVELOPMENT. IN BOTH
AREAS HOWEVER...CAPE SHOULD REMAIN INSUFFICIENT FOR APPRECIABLE
SEVERE POTENTIAL.
..GOSS.. 10/19/2009
CLICK TO GET WUUS02 PTSDY2 PRODUCT
NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z
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