SPC AC 041559
   
   DAY 1 CONVECTIVE OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   1059 AM CDT THU AUG 04 2005
   
   VALID 041630Z - 051200Z
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM ACY 25 NNE NHK RIC 15
   S OAJ.
   
   GEN TSTMS ARE FCST TO THE RIGHT OF A LINE FROM SAN NID TPH 55 WSW
   ELY 10 SE ELY DPG 45 WSW MLD 35 NNW PIH 10 NNE DLN BZN BIL DGW BFF
   10 NNE IML EAR 15 N DSM LNR 25 WNW GRB 10 N MQT.
   
   ...NO SVR TSTM AREAS FORECAST...
   
   ...GREAT LAKES TO SRN PLAINS...
   PROGRESSIVE LARGE SCALE TROUGH CONTINUES EWD ACROSS SCENTRAL CANADA
   WITH MINIMAL IMPACT ON CONUS.  HOWEVER ASSOCIATED COLD FRONT IS WELL
   DEFINED AND WILL BE THE FOCUS OF CONSIDERABLE THUNDERSTORM ACTIVITY
   THIS AFTERNOON/EVENING.  LATE THIS AM THE FRONT EXTENDED FROM ERN UP
   OF MI SWWD ACROSS LM ARCING BACK ACROSS NRN MO TO NRN TX PANHANDLE
   AND NERN NM.
   
   A PRE-FRONTAL LINE OF CONVECTION FROM ERN LWR MI SWWD INTO CENTRAL
   IL WILL WEAKEN AS IT HAS BECOMES GENERALLY ELEVATED.  MORE VIGOROUS
   THUNDERSTORMS WILL REDEVELOP VICINITY OF THE COLD FRONT IN RESPONSE
   TO DAYTIME HEATING AS THE AIR MASS IN THE WARM SECTOR REMAINS MOIST
   AND MDTLY UNSTABLE FROM OH VALLEY TO SRN PLAINS.
   
   THE COMBINATION OF RELATIVELY WARM/WEAK LAPSE RATES AND DEEP LAYER
   SHEAR RANGING DOWNWARD FROM 30KT NRN LWR MI TO LESS THAN 10KT FROM
   OH RIVER SWWD WILL LIMIT SEVERE POTENTIAL WITH THE FRONTALLY FORCED
   STORMS TODAY.  STRONG...ISOLATED DAMAGING WINDS ARE POSSIBLE IN MOST
   VIGOROUS STORMS...BUT LIMITED COVERAGE PRECLUDES A RISK AREA.
   
   ...SWRN DESERTS...
   MONSOON MOISTURE REMAINS OVER MUCH OF SWRN U.S.  MORE ACTIVE 
   CONVECTION LIKELY IN LOWER ELEVATIONS TODAY AS BOUNDARY LAYER HAS
   RECOVERED FROM THE TUESDAY NIGHT ACTIVITY.  STEERING FLOW WHILE
   GENERALLY 10KTS OR LESS...DOES FAVOR PROPAGATION FROM THE HIGHER
   TERRAIN W AND SW INTO ADJACENT DESERT VALLEYS. THUS WILL MAINTAIN A
   LOW RISK OF DAMAGING WINDS ASSOCIATED WITH STORMS PROPAGATING INTO
   THE LOWER ELEVATIONS LATE THIS AFTERNOON AND EVENING.
   
   ..HALES/TAYLOR.. 08/04/2005
   
   ...NOTICE...
   THE STATION RELATIVE POINTS IN THIS PRODUCT ARE NOW AVAILABLE
   SEPARATELY UNDER THE WMO HEADINGS WUUS01 PTSDY1...
   WUUS02 PTSDY2...WUUS03 PTSDY3.  THE INCLUSION OF POINTS
   IN THIS DISCUSSION WILL BE DISCONTINUED AFTER THE 2005
   CONVECTIVE SEASON.  A PUBLIC NOTIFICATION STATEMENT (PNS)
   WILL PROVIDE DETAILS ON THE TRANSITION.
   
   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z